glamor_render.c 73.9 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/*
 * Copyright © 2009 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 *
 * Authors:
 *    Eric Anholt <eric@anholt.net>
25 26
 *    Zhigang Gong <zhigang.gong@linux.intel.com>
 *    Junyan He <junyan.he@linux.intel.com>
27 28 29 30 31 32 33 34 35 36 37 38
 *
 */

/** @file glamor_render.c
 *
 * Render acceleration implementation
 */

#include "glamor_priv.h"

#ifdef RENDER
#include "mipict.h"
39
#include "fbpict.h"
40 41 42 43 44 45
#if 0
//#define DEBUGF(str, ...)  do {} while(0)
#define DEBUGF(str, ...) ErrorF(str, ##__VA_ARGS__)
//#define DEBUGRegionPrint(x) do {} while (0)
#define DEBUGRegionPrint RegionPrint
#endif
Zhigang Gong's avatar
Zhigang Gong committed
46

47
static struct blendinfo composite_op_info[] = {
Eric Anholt's avatar
Eric Anholt committed
48 49 50 51 52 53 54 55 56 57 58 59 60
    [PictOpClear] = {0, 0, GL_ZERO, GL_ZERO},
    [PictOpSrc] = {0, 0, GL_ONE, GL_ZERO},
    [PictOpDst] = {0, 0, GL_ZERO, GL_ONE},
    [PictOpOver] = {0, 1, GL_ONE, GL_ONE_MINUS_SRC_ALPHA},
    [PictOpOverReverse] = {1, 0, GL_ONE_MINUS_DST_ALPHA, GL_ONE},
    [PictOpIn] = {1, 0, GL_DST_ALPHA, GL_ZERO},
    [PictOpInReverse] = {0, 1, GL_ZERO, GL_SRC_ALPHA},
    [PictOpOut] = {1, 0, GL_ONE_MINUS_DST_ALPHA, GL_ZERO},
    [PictOpOutReverse] = {0, 1, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA},
    [PictOpAtop] = {1, 1, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA},
    [PictOpAtopReverse] = {1, 1, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA},
    [PictOpXor] = {1, 1, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA},
    [PictOpAdd] = {0, 0, GL_ONE, GL_ONE},
61
};
Eric Anholt's avatar
Eric Anholt committed
62

63
#define RepeatFix			10
64
static GLuint
65
glamor_create_composite_fs(struct shader_key *key)
66
{
Eric Anholt's avatar
Eric Anholt committed
67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
    const char *repeat_define =
        "#define RepeatNone               	      0\n"
        "#define RepeatNormal                     1\n"
        "#define RepeatPad                        2\n"
        "#define RepeatReflect                    3\n"
        "#define RepeatFix		      	      10\n"
        "uniform int 			source_repeat_mode;\n"
        "uniform int 			mask_repeat_mode;\n";
    const char *relocate_texture =
        GLAMOR_DEFAULT_PRECISION
        "vec2 rel_tex_coord(vec2 texture, vec4 wh, int repeat) \n"
        "{\n"
        "   vec2 rel_tex; \n"
        "   rel_tex = texture * wh.xy; \n"
        "	if (repeat == RepeatNone)\n"
        "		return rel_tex; \n"
        "   else if (repeat == RepeatNormal) \n"
        "   	rel_tex = floor(rel_tex) + (fract(rel_tex) / wh.xy); 	\n"
        "   else if(repeat == RepeatPad) { \n"
        "           if (rel_tex.x >= 1.0) rel_tex.x = 1.0 - wh.z * wh.x / 2.;  	\n"
        "		else if(rel_tex.x < 0.0) rel_tex.x = 0.0;	  	\n"
        "           if (rel_tex.y >= 1.0) rel_tex.y = 1.0 - wh.w * wh.y / 2.;	\n"
        "		else if(rel_tex.y < 0.0) rel_tex.y = 0.0;	\n"
        "   	rel_tex = rel_tex / wh.xy; \n"
        "    } \n"
        "   else if(repeat == RepeatReflect) {\n"
        "		if ((1.0 - mod(abs(floor(rel_tex.x)), 2.0)) < 0.001)\n"
        "			rel_tex.x = 2.0 - (1.0 - fract(rel_tex.x))/wh.x;\n"
        "		else \n"
        "			rel_tex.x = fract(rel_tex.x)/wh.x;\n"
        "		if ((1.0 - mod(abs(floor(rel_tex.y)), 2.0)) < 0.001)\n"
        "			rel_tex.y = 2.0 - (1.0 - fract(rel_tex.y))/wh.y;\n"
        "		else \n"
        "			rel_tex.y = fract(rel_tex.y)/wh.y;\n"
101 102 103
        "    } \n"
        "   return rel_tex; \n"
        "}\n";
Eric Anholt's avatar
Eric Anholt committed
104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124
    /* The texture and the pixmap size is not match eaxctly, so can't sample it directly.
     * rel_sampler will recalculate the texture coords.*/
    const char *rel_sampler =
        " vec4 rel_sampler(sampler2D tex_image, vec2 tex, vec4 wh, int repeat, int set_alpha)\n"
        "{\n"
        "	tex = rel_tex_coord(tex, wh, repeat - RepeatFix);\n"
        "   if (repeat == RepeatFix) {\n"
        "		if (!(tex.x >= 0.0 && tex.x < 1.0 \n"
        "		    && tex.y >= 0.0 && tex.y < 1.0))\n"
        "			return vec4(0.0, 0.0, 0.0, set_alpha);\n"
        "		tex = (fract(tex) / wh.xy);\n"
        "	}\n"
        "	if (set_alpha != 1)\n"
        "		return texture2D(tex_image, tex);\n"
        "	else\n"
        "		return vec4(texture2D(tex_image, tex).rgb, 1.0);\n"
        "}\n";

    const char *source_solid_fetch =
        GLAMOR_DEFAULT_PRECISION
        "uniform vec4 source;\n"
125 126 127 128
        "vec4 get_source()\n"
        "{\n"
        "	return source;\n"
        "}\n";
Eric Anholt's avatar
Eric Anholt committed
129 130 131 132 133 134 135 136 137 138 139 140 141 142
    const char *source_alpha_pixmap_fetch =
        GLAMOR_DEFAULT_PRECISION
        "varying vec2 source_texture;\n"
        "uniform sampler2D source_sampler;\n"
        "uniform vec4 source_wh;"
        "vec4 get_source()\n"
        "{\n"
        "   if (source_repeat_mode < RepeatFix)\n"
        "		return texture2D(source_sampler, source_texture);\n"
        "   else \n"
        "		return rel_sampler(source_sampler, source_texture,\n"
        "				   source_wh, source_repeat_mode, 0);\n"
        "}\n";
    const char *source_pixmap_fetch =
143 144
        GLAMOR_DEFAULT_PRECISION
        "varying vec2 source_texture;\n"
Eric Anholt's avatar
Eric Anholt committed
145 146 147 148 149 150 151 152 153 154 155
        "uniform sampler2D source_sampler;\n"
        "uniform vec4 source_wh;\n"
        "vec4 get_source()\n"
        "{\n"
        "   if (source_repeat_mode < RepeatFix) \n"
        "		return vec4(texture2D(source_sampler, source_texture).rgb, 1);\n"
        "	else \n"
        "		return rel_sampler(source_sampler, source_texture,\n"
        "				   source_wh, source_repeat_mode, 1);\n"
        "}\n";
    const char *mask_solid_fetch =
156 157 158 159 160 161
        GLAMOR_DEFAULT_PRECISION
        "uniform vec4 mask;\n"
        "vec4 get_mask()\n"
        "{\n"
        "	return mask;\n"
        "}\n";
Eric Anholt's avatar
Eric Anholt committed
162
    const char *mask_alpha_pixmap_fetch =
163 164
        GLAMOR_DEFAULT_PRECISION
        "varying vec2 mask_texture;\n"
Eric Anholt's avatar
Eric Anholt committed
165 166 167 168 169 170 171 172 173 174 175
        "uniform sampler2D mask_sampler;\n"
        "uniform vec4 mask_wh;\n"
        "vec4 get_mask()\n"
        "{\n"
        "   if (mask_repeat_mode < RepeatFix) \n"
        "		return texture2D(mask_sampler, mask_texture);\n"
        "   else \n"
        "		return rel_sampler(mask_sampler, mask_texture,\n"
        "				   mask_wh, mask_repeat_mode, 0);\n"
        "}\n";
    const char *mask_pixmap_fetch =
176 177
        GLAMOR_DEFAULT_PRECISION
        "varying vec2 mask_texture;\n"
Eric Anholt's avatar
Eric Anholt committed
178 179 180 181 182 183 184 185 186 187 188
        "uniform sampler2D mask_sampler;\n"
        "uniform vec4 mask_wh;\n"
        "vec4 get_mask()\n"
        "{\n"
        "   if (mask_repeat_mode < RepeatFix) \n"
        "   	return vec4(texture2D(mask_sampler, mask_texture).rgb, 1);\n"
        "   else \n"
        "		return rel_sampler(mask_sampler, mask_texture,\n"
        "				   mask_wh, mask_repeat_mode, 1);\n"
        "}\n";
    const char *in_source_only =
189 190 191 192 193
        GLAMOR_DEFAULT_PRECISION
        "void main()\n"
        "{\n"
        "	gl_FragColor = get_source();\n"
        "}\n";
Eric Anholt's avatar
Eric Anholt committed
194
    const char *in_normal =
195 196 197 198 199
        GLAMOR_DEFAULT_PRECISION
        "void main()\n"
        "{\n"
        "	gl_FragColor = get_source() * get_mask().a;\n"
        "}\n";
Eric Anholt's avatar
Eric Anholt committed
200
    const char *in_ca_source =
201 202 203 204 205
        GLAMOR_DEFAULT_PRECISION
        "void main()\n"
        "{\n"
        "	gl_FragColor = get_source() * get_mask();\n"
        "}\n";
Eric Anholt's avatar
Eric Anholt committed
206
    const char *in_ca_alpha =
207 208 209 210 211
        GLAMOR_DEFAULT_PRECISION
        "void main()\n"
        "{\n"
        "	gl_FragColor = get_source().a * get_mask();\n"
        "}\n";
Eric Anholt's avatar
Eric Anholt committed
212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267
    char *source;
    const char *source_fetch;
    const char *mask_fetch = "";
    const char *in;
    GLuint prog;

    switch (key->source) {
    case SHADER_SOURCE_SOLID:
        source_fetch = source_solid_fetch;
        break;
    case SHADER_SOURCE_TEXTURE_ALPHA:
        source_fetch = source_alpha_pixmap_fetch;
        break;
    case SHADER_SOURCE_TEXTURE:
        source_fetch = source_pixmap_fetch;
        break;
    default:
        FatalError("Bad composite shader source");
    }

    switch (key->mask) {
    case SHADER_MASK_NONE:
        break;
    case SHADER_MASK_SOLID:
        mask_fetch = mask_solid_fetch;
        break;
    case SHADER_MASK_TEXTURE_ALPHA:
        mask_fetch = mask_alpha_pixmap_fetch;
        break;
    case SHADER_MASK_TEXTURE:
        mask_fetch = mask_pixmap_fetch;
        break;
    default:
        FatalError("Bad composite shader mask");
    }

    switch (key->in) {
    case SHADER_IN_SOURCE_ONLY:
        in = in_source_only;
        break;
    case SHADER_IN_NORMAL:
        in = in_normal;
        break;
    case SHADER_IN_CA_SOURCE:
        in = in_ca_source;
        break;
    case SHADER_IN_CA_ALPHA:
        in = in_ca_alpha;
        break;
    default:
        FatalError("Bad composite IN type");
    }

    XNFasprintf(&source, "%s%s%s%s%s%s", repeat_define, relocate_texture,
                rel_sampler, source_fetch, mask_fetch, in);

268
    prog = glamor_compile_glsl_prog(GL_FRAGMENT_SHADER, source);
Eric Anholt's avatar
Eric Anholt committed
269 270 271
    free(source);

    return prog;
272 273 274
}

static GLuint
275
glamor_create_composite_vs(struct shader_key *key)
276
{
Eric Anholt's avatar
Eric Anholt committed
277 278 279 280 281 282
    const char *main_opening =
        "attribute vec4 v_position;\n"
        "attribute vec4 v_texcoord0;\n"
        "attribute vec4 v_texcoord1;\n"
        "varying vec2 source_texture;\n"
        "varying vec2 mask_texture;\n"
283 284 285
        "void main()\n"
        "{\n"
        "	gl_Position = v_position;\n";
Eric Anholt's avatar
Eric Anholt committed
286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304
    const char *source_coords = "	source_texture = v_texcoord0.xy;\n";
    const char *mask_coords = "	mask_texture = v_texcoord1.xy;\n";
    const char *main_closing = "}\n";
    const char *source_coords_setup = "";
    const char *mask_coords_setup = "";
    char *source;
    GLuint prog;

    if (key->source != SHADER_SOURCE_SOLID)
        source_coords_setup = source_coords;

    if (key->mask != SHADER_MASK_NONE && key->mask != SHADER_MASK_SOLID)
        mask_coords_setup = mask_coords;

    XNFasprintf(&source,
                "%s%s%s%s",
                main_opening,
                source_coords_setup, mask_coords_setup, main_closing);

305
    prog = glamor_compile_glsl_prog(GL_VERTEX_SHADER, source);
Eric Anholt's avatar
Eric Anholt committed
306 307 308
    free(source);

    return prog;
309 310 311
}

static void
312
glamor_create_composite_shader(ScreenPtr screen, struct shader_key *key,
313
                               glamor_composite_shader *shader)
314
{
Eric Anholt's avatar
Eric Anholt committed
315 316 317 318
    GLuint vs, fs, prog;
    GLint source_sampler_uniform_location, mask_sampler_uniform_location;
    glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);

319
    glamor_get_context(glamor_priv);
320
    vs = glamor_create_composite_vs(key);
Eric Anholt's avatar
Eric Anholt committed
321 322
    if (vs == 0)
        goto out;
323
    fs = glamor_create_composite_fs(key);
Eric Anholt's avatar
Eric Anholt committed
324 325 326
    if (fs == 0)
        goto out;

327 328 329
    prog = glCreateProgram();
    glAttachShader(prog, vs);
    glAttachShader(prog, fs);
Eric Anholt's avatar
Eric Anholt committed
330

331 332 333
    glBindAttribLocation(prog, GLAMOR_VERTEX_POS, "v_position");
    glBindAttribLocation(prog, GLAMOR_VERTEX_SOURCE, "v_texcoord0");
    glBindAttribLocation(prog, GLAMOR_VERTEX_MASK, "v_texcoord1");
Eric Anholt's avatar
Eric Anholt committed
334

335
    glamor_link_glsl_prog(prog);
Eric Anholt's avatar
Eric Anholt committed
336 337 338

    shader->prog = prog;

339
    glUseProgram(prog);
Eric Anholt's avatar
Eric Anholt committed
340 341

    if (key->source == SHADER_SOURCE_SOLID) {
342
        shader->source_uniform_location = glGetUniformLocation(prog, "source");
Eric Anholt's avatar
Eric Anholt committed
343 344 345
    }
    else {
        source_sampler_uniform_location =
346 347 348
            glGetUniformLocation(prog, "source_sampler");
        glUniform1i(source_sampler_uniform_location, 0);
        shader->source_wh = glGetUniformLocation(prog, "source_wh");
Eric Anholt's avatar
Eric Anholt committed
349
        shader->source_repeat_mode =
350
            glGetUniformLocation(prog, "source_repeat_mode");
Eric Anholt's avatar
Eric Anholt committed
351 352 353 354
    }

    if (key->mask != SHADER_MASK_NONE) {
        if (key->mask == SHADER_MASK_SOLID) {
355
            shader->mask_uniform_location = glGetUniformLocation(prog, "mask");
Eric Anholt's avatar
Eric Anholt committed
356 357 358
        }
        else {
            mask_sampler_uniform_location =
359 360 361
                glGetUniformLocation(prog, "mask_sampler");
            glUniform1i(mask_sampler_uniform_location, 1);
            shader->mask_wh = glGetUniformLocation(prog, "mask_wh");
Eric Anholt's avatar
Eric Anholt committed
362
            shader->mask_repeat_mode =
363
                glGetUniformLocation(prog, "mask_repeat_mode");
Eric Anholt's avatar
Eric Anholt committed
364 365 366 367
        }
    }

 out:
368
    glamor_put_context(glamor_priv);
369 370
}

371
static glamor_composite_shader *
Zhigang Gong's avatar
Zhigang Gong committed
372
glamor_lookup_composite_shader(ScreenPtr screen, struct
Eric Anholt's avatar
Eric Anholt committed
373 374
                               shader_key
                               *key)
375
{
Eric Anholt's avatar
Eric Anholt committed
376 377
    glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
    glamor_composite_shader *shader;
378

Eric Anholt's avatar
Eric Anholt committed
379 380 381
    shader = &glamor_priv->composite_shader[key->source][key->mask][key->in];
    if (shader->prog == 0)
        glamor_create_composite_shader(screen, key, shader);
382

Eric Anholt's avatar
Eric Anholt committed
383
    return shader;
384
}
Zhigang Gong's avatar
Zhigang Gong committed
385

386 387 388
static void
glamor_init_eb(unsigned short *eb, int vert_cnt)
{
Eric Anholt's avatar
Eric Anholt committed
389 390 391 392 393 394 395 396 397 398
    int i, j;

    for (i = 0, j = 0; j < vert_cnt; i += 6, j += 4) {
        eb[i] = j;
        eb[i + 1] = j + 1;
        eb[i + 2] = j + 2;
        eb[i + 3] = j;
        eb[i + 4] = j + 2;
        eb[i + 5] = j + 3;
    }
399 400
}

401 402 403
void
glamor_init_composite_shaders(ScreenPtr screen)
{
Eric Anholt's avatar
Eric Anholt committed
404 405 406 407 408 409
    glamor_screen_private *glamor_priv;
    unsigned short *eb;
    float *vb = NULL;
    int eb_size;

    glamor_priv = glamor_get_screen_private(screen);
410
    glamor_get_context(glamor_priv);
411 412 413
    glGenBuffers(1, &glamor_priv->vbo);
    glGenBuffers(1, &glamor_priv->ebo);
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, glamor_priv->ebo);
Eric Anholt's avatar
Eric Anholt committed
414 415 416 417

    eb_size = GLAMOR_COMPOSITE_VBO_VERT_CNT * sizeof(short) * 2;

    if (glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP) {
418 419
        glBufferData(GL_ELEMENT_ARRAY_BUFFER, eb_size, NULL, GL_STATIC_DRAW);
        eb = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY);
Eric Anholt's avatar
Eric Anholt committed
420 421 422 423 424 425 426 427 428 429 430 431 432 433
    }
    else {
        vb = malloc(GLAMOR_COMPOSITE_VBO_VERT_CNT * sizeof(float) * 2);
        if (vb == NULL)
            FatalError("Failed to allocate vb memory.\n");
        eb = malloc(eb_size);
    }

    if (eb == NULL)
        FatalError
            ("fatal error, fail to get element buffer. GL context may be not created correctly.\n");
    glamor_init_eb(eb, GLAMOR_COMPOSITE_VBO_VERT_CNT);

    if (glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP) {
434 435
        glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER);
        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
Eric Anholt's avatar
Eric Anholt committed
436 437
    }
    else {
438 439
        glBufferData(GL_ELEMENT_ARRAY_BUFFER, eb_size, eb, GL_STATIC_DRAW);
        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
Eric Anholt's avatar
Eric Anholt committed
440

441 442 443 444 445
        glBindBuffer(GL_ARRAY_BUFFER, glamor_priv->vbo);
        glBufferData(GL_ARRAY_BUFFER,
                     GLAMOR_COMPOSITE_VBO_VERT_CNT * sizeof(float) *
                     2, NULL, GL_DYNAMIC_DRAW);
        glBindBuffer(GL_ARRAY_BUFFER, 0);
Eric Anholt's avatar
Eric Anholt committed
446 447 448 449 450

        free(eb);
        glamor_priv->vb = (char *) vb;
    }

451
    glamor_put_context(glamor_priv);
452
}
453 454 455 456

void
glamor_fini_composite_shaders(ScreenPtr screen)
{
Eric Anholt's avatar
Eric Anholt committed
457 458 459 460 461
    glamor_screen_private *glamor_priv;
    glamor_composite_shader *shader;
    int i, j, k;

    glamor_priv = glamor_get_screen_private(screen);
462
    glamor_get_context(glamor_priv);
463 464
    glDeleteBuffers(1, &glamor_priv->vbo);
    glDeleteBuffers(1, &glamor_priv->ebo);
Eric Anholt's avatar
Eric Anholt committed
465 466 467 468 469 470

    for (i = 0; i < SHADER_SOURCE_COUNT; i++)
        for (j = 0; j < SHADER_MASK_COUNT; j++)
            for (k = 0; k < SHADER_IN_COUNT; k++) {
                shader = &glamor_priv->composite_shader[i][j][k];
                if (shader->prog)
471
                    glDeleteProgram(shader->prog);
Eric Anholt's avatar
Eric Anholt committed
472 473 474 475
            }
    if (glamor_priv->gl_flavor != GLAMOR_GL_DESKTOP && glamor_priv->vb)
        free(glamor_priv->vb);

476
    glamor_put_context(glamor_priv);
Chris Wilson's avatar
Chris Wilson committed
477
}
478

479 480
static Bool
glamor_set_composite_op(ScreenPtr screen,
Eric Anholt's avatar
Eric Anholt committed
481 482
                        CARD8 op, struct blendinfo *op_info_result,
                        PicturePtr dest, PicturePtr mask)
483
{
Eric Anholt's avatar
Eric Anholt committed
484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520
    GLenum source_blend, dest_blend;
    struct blendinfo *op_info;

    if (op >= ARRAY_SIZE(composite_op_info)) {
        glamor_fallback("unsupported render op %d \n", op);
        return GL_FALSE;
    }
    op_info = &composite_op_info[op];

    source_blend = op_info->source_blend;
    dest_blend = op_info->dest_blend;

    /* If there's no dst alpha channel, adjust the blend op so that we'll treat
     * it as always 1.
     */
    if (PICT_FORMAT_A(dest->format) == 0 && op_info->dest_alpha) {
        if (source_blend == GL_DST_ALPHA)
            source_blend = GL_ONE;
        else if (source_blend == GL_ONE_MINUS_DST_ALPHA)
            source_blend = GL_ZERO;
    }

    /* Set up the source alpha value for blending in component alpha mode. */
    if (mask && mask->componentAlpha
        && PICT_FORMAT_RGB(mask->format) != 0 && op_info->source_alpha) {
        if (dest_blend == GL_SRC_ALPHA)
            dest_blend = GL_SRC_COLOR;
        else if (dest_blend == GL_ONE_MINUS_SRC_ALPHA)
            dest_blend = GL_ONE_MINUS_SRC_COLOR;
    }

    op_info_result->source_blend = source_blend;
    op_info_result->dest_blend = dest_blend;
    op_info_result->source_alpha = op_info->source_alpha;
    op_info_result->dest_alpha = op_info->dest_alpha;

    return TRUE;
521 522 523
}

static void
524
glamor_set_composite_texture(glamor_screen_private *glamor_priv, int unit,
Eric Anholt's avatar
Eric Anholt committed
525
                             PicturePtr picture,
526
                             glamor_pixmap_private *pixmap_priv,
Eric Anholt's avatar
Eric Anholt committed
527
                             GLuint wh_location, GLuint repeat_location)
528
{
Eric Anholt's avatar
Eric Anholt committed
529 530 531
    float wh[4];
    int repeat_type;

532
    glamor_get_context(glamor_priv);
533 534
    glActiveTexture(GL_TEXTURE0 + unit);
    glBindTexture(GL_TEXTURE_2D, pixmap_priv->base.fbo->tex);
Eric Anholt's avatar
Eric Anholt committed
535 536 537
    repeat_type = picture->repeatType;
    switch (picture->repeatType) {
    case RepeatNone:
538
#ifndef GLAMOR_GLES2
Eric Anholt's avatar
Eric Anholt committed
539
        /* XXX  GLES2 doesn't support GL_CLAMP_TO_BORDER. */
540 541
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
542
#else
543 544
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
545
#endif
Eric Anholt's avatar
Eric Anholt committed
546 547
        break;
    case RepeatNormal:
548 549
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
Eric Anholt's avatar
Eric Anholt committed
550 551
        break;
    case RepeatPad:
552 553
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
Eric Anholt's avatar
Eric Anholt committed
554 555
        break;
    case RepeatReflect:
556 557
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_MIRRORED_REPEAT);
Eric Anholt's avatar
Eric Anholt committed
558 559 560 561 562 563 564
        break;
    }

    switch (picture->filter) {
    default:
    case PictFilterFast:
    case PictFilterNearest:
565 566
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
Eric Anholt's avatar
Eric Anholt committed
567 568 569 570
        break;
    case PictFilterGood:
    case PictFilterBest:
    case PictFilterBilinear:
571 572
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
Eric Anholt's avatar
Eric Anholt committed
573 574
        break;
    }
575

Eric Anholt's avatar
Eric Anholt committed
576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592
    /*
     *  GLES2 doesn't support RepeatNone. We need to fix it anyway.
     *
     **/
    if (repeat_type != RepeatNone)
        repeat_type += RepeatFix;
    else if (glamor_priv->gl_flavor == GLAMOR_GL_ES2
             || pixmap_priv->type == GLAMOR_TEXTURE_LARGE) {
        if (picture->transform
            || (GLAMOR_PIXMAP_FBO_NOT_EAXCT_SIZE(pixmap_priv)))
            repeat_type += RepeatFix;
    }
    if (repeat_type >= RepeatFix) {
        glamor_pixmap_fbo_fix_wh_ratio(wh, pixmap_priv);
        if ((wh[0] != 1.0 || wh[1] != 1.0)
            || (glamor_priv->gl_flavor == GLAMOR_GL_ES2
                && repeat_type == RepeatFix))
593
            glUniform4fv(wh_location, 1, wh);
Eric Anholt's avatar
Eric Anholt committed
594 595 596
        else
            repeat_type -= RepeatFix;
    }
597
    glUniform1i(repeat_location, repeat_type);
598
    glamor_put_context(glamor_priv);
599 600 601
}

static void
602
glamor_set_composite_solid(float *color, GLint uniform_location)
603
{
604
    glUniform4fv(uniform_location, 1, color);
605 606
}

607
static int
Zhigang Gong's avatar
Zhigang Gong committed
608
compatible_formats(CARD8 op, PicturePtr dst, PicturePtr src)
609
{
Eric Anholt's avatar
Eric Anholt committed
610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631
    if (op == PictOpSrc) {
        if (src->format == dst->format)
            return 1;

        if (src->format == PICT_a8r8g8b8 && dst->format == PICT_x8r8g8b8)
            return 1;

        if (src->format == PICT_a8b8g8r8 && dst->format == PICT_x8b8g8r8)
            return 1;
    }
    else if (op == PictOpOver) {
        if (src->alphaMap || dst->alphaMap)
            return 0;

        if (src->format != dst->format)
            return 0;

        if (src->format == PICT_x8r8g8b8 || src->format == PICT_x8b8g8r8)
            return 1;
    }

    return 0;
632 633
}

634 635 636
static char
glamor_get_picture_location(PicturePtr picture)
{
Eric Anholt's avatar
Eric Anholt committed
637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652
    if (picture == NULL)
        return ' ';

    if (picture->pDrawable == NULL) {
        switch (picture->pSourcePict->type) {
        case SourcePictTypeSolidFill:
            return 'c';
        case SourcePictTypeLinear:
            return 'l';
        case SourcePictTypeRadial:
            return 'r';
        default:
            return '?';
        }
    }
    return glamor_get_drawable_location(picture->pDrawable);
653 654
}

655
static Bool
656
glamor_composite_with_copy(CARD8 op,
Eric Anholt's avatar
Eric Anholt committed
657 658 659 660 661
                           PicturePtr source,
                           PicturePtr dest,
                           INT16 x_source,
                           INT16 y_source,
                           INT16 x_dest, INT16 y_dest, RegionPtr region)
662
{
Eric Anholt's avatar
Eric Anholt committed
663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699
    int ret = FALSE;

    if (!source->pDrawable)
        return FALSE;

    if (!compatible_formats(op, dest, source))
        return FALSE;

    if (source->repeat || source->transform) {
        return FALSE;
    }

    x_dest += dest->pDrawable->x;
    y_dest += dest->pDrawable->y;
    x_source += source->pDrawable->x;
    y_source += source->pDrawable->y;
    if (PICT_FORMAT_A(source->format) == 0) {
        /* Fallback if we sample outside the source so that we
         * swizzle the correct clear color for out-of-bounds texels.
         */
        if (region->extents.x1 + x_source - x_dest < 0)
            goto cleanup_region;
        if (region->extents.x2 + x_source - x_dest > source->pDrawable->width)
            goto cleanup_region;

        if (region->extents.y1 + y_source - y_dest < 0)
            goto cleanup_region;
        if (region->extents.y2 + y_source - y_dest > source->pDrawable->height)
            goto cleanup_region;
    }
    ret = glamor_copy_n_to_n_nf(source->pDrawable,
                                dest->pDrawable, NULL,
                                RegionRects(region), RegionNumRects(region),
                                x_source - x_dest, y_source - y_dest,
                                FALSE, FALSE, 0, NULL);
 cleanup_region:
    return ret;
700 701
}

702
void
703
glamor_setup_composite_vbo(ScreenPtr screen, int n_verts)
704
{
Eric Anholt's avatar
Eric Anholt committed
705 706 707 708 709 710 711 712 713 714 715 716
    glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
    int vert_size;

    glamor_priv->render_nr_verts = 0;
    glamor_priv->vb_stride = 2 * sizeof(float);
    if (glamor_priv->has_source_coords)
        glamor_priv->vb_stride += 2 * sizeof(float);
    if (glamor_priv->has_mask_coords)
        glamor_priv->vb_stride += 2 * sizeof(float);

    vert_size = n_verts * glamor_priv->vb_stride;

717
    glamor_get_context(glamor_priv);
718
    glBindBuffer(GL_ARRAY_BUFFER, glamor_priv->vbo);
Eric Anholt's avatar
Eric Anholt committed
719 720 721 722 723
    if (glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP) {
        if (glamor_priv->vbo_size < (glamor_priv->vbo_offset + vert_size)) {
            glamor_priv->vbo_size = GLAMOR_COMPOSITE_VBO_VERT_CNT *
                glamor_priv->vb_stride;
            glamor_priv->vbo_offset = 0;
724 725
            glBufferData(GL_ARRAY_BUFFER,
                         glamor_priv->vbo_size, NULL, GL_STREAM_DRAW);
Eric Anholt's avatar
Eric Anholt committed
726 727
        }

728 729 730 731 732
        glamor_priv->vb = glMapBufferRange(GL_ARRAY_BUFFER,
                                           glamor_priv->vbo_offset,
                                           vert_size,
                                           GL_MAP_WRITE_BIT |
                                           GL_MAP_UNSYNCHRONIZED_BIT);
Eric Anholt's avatar
Eric Anholt committed
733 734 735 736 737 738
        assert(glamor_priv->vb != NULL);
        glamor_priv->vb -= glamor_priv->vbo_offset;
    }
    else
        glamor_priv->vbo_offset = 0;

739
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, glamor_priv->ebo);
Eric Anholt's avatar
Eric Anholt committed
740

741 742 743 744 745
    glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_FLOAT, GL_FALSE,
                          glamor_priv->vb_stride,
                          (void *) ((long)
                                    glamor_priv->vbo_offset));
    glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
Eric Anholt's avatar
Eric Anholt committed
746 747

    if (glamor_priv->has_source_coords) {
748 749 750 751 752 753
        glVertexAttribPointer(GLAMOR_VERTEX_SOURCE, 2,
                              GL_FLOAT, GL_FALSE,
                              glamor_priv->vb_stride,
                              (void *) ((long) glamor_priv->vbo_offset +
                                        2 * sizeof(float)));
        glEnableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
Eric Anholt's avatar
Eric Anholt committed
754 755 756
    }

    if (glamor_priv->has_mask_coords) {
757 758 759 760 761 762
        glVertexAttribPointer(GLAMOR_VERTEX_MASK, 2, GL_FLOAT, GL_FALSE,
                              glamor_priv->vb_stride,
                              (void *) ((long) glamor_priv->vbo_offset +
                                        (glamor_priv->has_source_coords ?
                                         4 : 2) * sizeof(float)));
        glEnableVertexAttribArray(GLAMOR_VERTEX_MASK);
Eric Anholt's avatar
Eric Anholt committed
763
    }
764
    glamor_put_context(glamor_priv);
765 766
}

767
void
768
glamor_emit_composite_vert(ScreenPtr screen,
Eric Anholt's avatar
Eric Anholt committed
769 770 771
                           const float *src_coords,
                           const float *mask_coords,
                           const float *dst_coords, int i)
772
{
Eric Anholt's avatar
Eric Anholt committed
773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789
    glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
    float *vb = (float *) (glamor_priv->vb + glamor_priv->vbo_offset);
    int j = 0;

    vb[j++] = dst_coords[i * 2 + 0];
    vb[j++] = dst_coords[i * 2 + 1];
    if (glamor_priv->has_source_coords) {
        vb[j++] = src_coords[i * 2 + 0];
        vb[j++] = src_coords[i * 2 + 1];
    }
    if (glamor_priv->has_mask_coords) {
        vb[j++] = mask_coords[i * 2 + 0];
        vb[j++] = mask_coords[i * 2 + 1];
    }

    glamor_priv->render_nr_verts++;
    glamor_priv->vbo_offset += glamor_priv->vb_stride;
790 791 792 793 794
}

static void
glamor_flush_composite_rects(ScreenPtr screen)
{
Eric Anholt's avatar
Eric Anholt committed
795
    glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
Chris Wilson's avatar
Chris Wilson committed
796

797
    glamor_get_context(glamor_priv);
Eric Anholt's avatar
Eric Anholt committed
798
    if (glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP)
799
        glUnmapBuffer(GL_ARRAY_BUFFER);
Eric Anholt's avatar
Eric Anholt committed
800
    else {
801

802 803 804
        glBindBuffer(GL_ARRAY_BUFFER, glamor_priv->vbo);
        glBufferData(GL_ARRAY_BUFFER, glamor_priv->vbo_offset,
                     glamor_priv->vb, GL_DYNAMIC_DRAW);
Eric Anholt's avatar
Eric Anholt committed
805
    }
806

Eric Anholt's avatar
Eric Anholt committed
807 808
    if (!glamor_priv->render_nr_verts)
        return;
He Junyan's avatar
He Junyan committed
809

810
#ifndef GLAMOR_GLES2
811 812 813
    glDrawRangeElements(GL_TRIANGLES, 0, glamor_priv->render_nr_verts,
                        (glamor_priv->render_nr_verts * 3) / 2,
                        GL_UNSIGNED_SHORT, NULL);
814
#else
815 816
    glDrawElements(GL_TRIANGLES, (glamor_priv->render_nr_verts * 3) / 2,
                   GL_UNSIGNED_SHORT, NULL);
817
#endif
818
    glamor_put_context(glamor_priv);
819 820
}

Zhigang Gong's avatar
Zhigang Gong committed
821
int pict_format_combine_tab[][3] = {
Eric Anholt's avatar
Eric Anholt committed
822 823
    {PICT_TYPE_ARGB, PICT_TYPE_A, PICT_TYPE_ARGB},
    {PICT_TYPE_ABGR, PICT_TYPE_A, PICT_TYPE_ABGR},
Zhigang Gong's avatar
Zhigang Gong committed
824
};
825

Zhigang Gong's avatar
Zhigang Gong committed
826 827
static Bool
combine_pict_format(PictFormatShort * des, const PictFormatShort src,
Eric Anholt's avatar
Eric Anholt committed
828
                    const PictFormatShort mask, enum shader_in in_ca)
829
{
Eric Anholt's avatar
Eric Anholt committed
830
    PictFormatShort new_vis;
831
    int src_type, mask_type, src_bpp;
Eric Anholt's avatar
Eric Anholt committed
832 833 834 835 836 837 838 839
    int i;

    if (src == mask) {
        *des = src;
        return TRUE;
    }
    src_bpp = PICT_FORMAT_BPP(src);

840
    assert(src_bpp == PICT_FORMAT_BPP(mask));
Eric Anholt's avatar
Eric Anholt committed
841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881

    new_vis = PICT_FORMAT_VIS(src) | PICT_FORMAT_VIS(mask);

    switch (in_ca) {
    case SHADER_IN_SOURCE_ONLY:
        return TRUE;
    case SHADER_IN_NORMAL:
        src_type = PICT_FORMAT_TYPE(src);
        mask_type = PICT_TYPE_A;
        break;
    case SHADER_IN_CA_SOURCE:
        src_type = PICT_FORMAT_TYPE(src);
        mask_type = PICT_FORMAT_TYPE(mask);
        break;
    case SHADER_IN_CA_ALPHA:
        src_type = PICT_TYPE_A;
        mask_type = PICT_FORMAT_TYPE(mask);
        break;
    default:
        return FALSE;
    }

    if (src_type == mask_type) {
        *des = PICT_VISFORMAT(src_bpp, src_type, new_vis);
        return TRUE;
    }

    for (i = 0;
         i <
         sizeof(pict_format_combine_tab) /
         sizeof(pict_format_combine_tab[0]); i++) {
        if ((src_type == pict_format_combine_tab[i][0]
             && mask_type == pict_format_combine_tab[i][1])
            || (src_type == pict_format_combine_tab[i][1]
                && mask_type == pict_format_combine_tab[i][0])) {
            *des = PICT_VISFORMAT(src_bpp, pict_format_combine_tab[i]
                                  [2], new_vis);
            return TRUE;
        }
    }
    return FALSE;
882 883
}

884
static void
885
glamor_set_normalize_tcoords_generic(glamor_pixmap_private *priv,
Eric Anholt's avatar
Eric Anholt committed
886 887 888 889 890 891
                                     int repeat_type,
                                     float *matrix,
                                     float xscale, float yscale,
                                     int x1, int y1, int x2, int y2,
                                     int yInverted, float *texcoords,
                                     int stride)
892
{
Eric Anholt's avatar
Eric Anholt committed
893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914
    if (!matrix && repeat_type == RepeatNone)
        glamor_set_normalize_tcoords_ext(priv, xscale, yscale,
                                         x1, y1,
                                         x2, y2, yInverted, texcoords, stride);
    else if (matrix && repeat_type == RepeatNone)
        glamor_set_transformed_normalize_tcoords_ext(priv, matrix, xscale,
                                                     yscale, x1, y1,
                                                     x2, y2,
                                                     yInverted,
                                                     texcoords, stride);
    else if (!matrix && repeat_type != RepeatNone)
        glamor_set_repeat_normalize_tcoords_ext(priv, repeat_type,
                                                xscale, yscale,
                                                x1, y1,
                                                x2, y2,
                                                yInverted, texcoords, stride);
    else if (matrix && repeat_type != RepeatNone)
        glamor_set_repeat_transformed_normalize_tcoords_ext(priv, repeat_type,
                                                            matrix, xscale,
                                                            yscale, x1, y1, x2,
                                                            y2, yInverted,
                                                            texcoords, stride);
915 916
}

Eric Anholt's avatar
Eric Anholt committed
917 918 919 920 921
Bool
glamor_composite_choose_shader(CARD8 op,
                               PicturePtr source,
                               PicturePtr mask,
                               PicturePtr dest,
922 923 924
                               glamor_pixmap_private *source_pixmap_priv,
                               glamor_pixmap_private *mask_pixmap_priv,
                               glamor_pixmap_private *dest_pixmap_priv,
Eric Anholt's avatar
Eric Anholt committed
925 926 927
                               struct shader_key *s_key,
                               glamor_composite_shader ** shader,
                               struct blendinfo *op_info,
928
                               PictFormatShort *psaved_source_format)
929
{
Eric Anholt's avatar
Eric Anholt committed
930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033
    ScreenPtr screen = dest->pDrawable->pScreen;
    PixmapPtr dest_pixmap = dest_pixmap_priv->base.pixmap;
    PixmapPtr source_pixmap = NULL;
    PixmapPtr mask_pixmap = NULL;
    enum glamor_pixmap_status source_status = GLAMOR_NONE;
    enum glamor_pixmap_status mask_status = GLAMOR_NONE;
    PictFormatShort saved_source_format = 0;
    struct shader_key key;
    GLfloat source_solid_color[4];
    GLfloat mask_solid_color[4];
    Bool ret = FALSE;

    if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(dest_pixmap_priv)) {
        glamor_fallback("dest has no fbo.\n");
        goto fail;
    }

    memset(&key, 0, sizeof(key));
    if (!source) {
        key.source = SHADER_SOURCE_SOLID;
        source_solid_color[0] = 0.0;
        source_solid_color[1] = 0.0;
        source_solid_color[2] = 0.0;
        source_solid_color[3] = 0.0;
    }
    else if (!source->pDrawable) {
        if (source->pSourcePict->type == SourcePictTypeSolidFill) {
            key.source = SHADER_SOURCE_SOLID;
            glamor_get_rgba_from_pixel(source->pSourcePict->solidFill.color,
                                       &source_solid_color[0],
                                       &source_solid_color[1],
                                       &source_solid_color[2],
                                       &source_solid_color[3], PICT_a8r8g8b8);
        }
        else
            goto fail;
    }
    else {
        key.source = SHADER_SOURCE_TEXTURE_ALPHA;
    }

    if (mask) {
        if (!mask->pDrawable) {
            if (mask->pSourcePict->type == SourcePictTypeSolidFill) {
                key.mask = SHADER_MASK_SOLID;
                glamor_get_rgba_from_pixel
                    (mask->pSourcePict->solidFill.color,
                     &mask_solid_color[0],
                     &mask_solid_color[1],
                     &mask_solid_color[2], &mask_solid_color[3], PICT_a8r8g8b8);
            }
            else
                goto fail;
        }
        else {
            key.mask = SHADER_MASK_TEXTURE_ALPHA;
        }

        if (!mask->componentAlpha) {
            key.in = SHADER_IN_NORMAL;
        }
        else {
            if (op == PictOpClear)
                key.mask = SHADER_MASK_NONE;
            else if (op == PictOpSrc || op == PictOpAdd
                     || op == PictOpIn || op == PictOpOut
                     || op == PictOpOverReverse)
                key.in = SHADER_IN_CA_SOURCE;
            else if (op == PictOpOutReverse || op == PictOpInReverse) {
                key.in = SHADER_IN_CA_ALPHA;
            }
            else {
                glamor_fallback("Unsupported component alpha op: %d\n", op);
                goto fail;
            }
        }
    }
    else {
        key.mask = SHADER_MASK_NONE;
        key.in = SHADER_IN_SOURCE_ONLY;
    }

    if (source && source->alphaMap) {
        glamor_fallback("source alphaMap\n");
        goto fail;
    }
    if (mask && mask->alphaMap) {
        glamor_fallback("mask alphaMap\n");
        goto fail;
    }

    if (key.source == SHADER_SOURCE_TEXTURE ||
        key.source == SHADER_SOURCE_TEXTURE_ALPHA) {
        source_pixmap = source_pixmap_priv->base.pixmap;
        if (source_pixmap == dest_pixmap) {
            /* XXX source and the dest share the same texture.
             * Does it need special handle? */
            glamor_fallback("source == dest\n");
        }
        if (source_pixmap_priv->base.gl_fbo == 0) {
            /* XXX in Xephyr, we may have gl_fbo equal to 1 but gl_tex
             * equal to zero when the pixmap is screen pixmap. Then we may
             * refer the tex zero directly latter in the composition.
             * It seems that it works fine, but it may have potential problem*/
1034
#ifdef GLAMOR_PIXMAP_DYNAMIC_UPLOAD
Eric Anholt's avatar
Eric Anholt committed
1035
            source_status = GLAMOR_UPLOAD_PENDING;
1036
#else
Eric Anholt's avatar
Eric Anholt committed
1037 1038
            glamor_fallback("no texture in source\n");
            goto fail;
1039
#endif
Eric Anholt's avatar
Eric Anholt committed
1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050
        }
    }

    if (key.mask == SHADER_MASK_TEXTURE ||
        key.mask == SHADER_MASK_TEXTURE_ALPHA) {
        mask_pixmap = mask_pixmap_priv->base.pixmap;
        if (mask_pixmap == dest_pixmap) {
            glamor_fallback("mask == dest\n");
            goto fail;
        }
        if (mask_pixmap_priv->base.gl_fbo == 0) {
1051
#ifdef GLAMOR_PIXMAP_DYNAMIC_UPLOAD
Eric Anholt's avatar
Eric Anholt committed
1052
            mask_status = GLAMOR_UPLOAD_PENDING;
1053
#else
Eric Anholt's avatar
Eric Anholt committed
1054 1055
            glamor_fallback("no texture in mask\n");
            goto fail;
1056
#endif
Eric Anholt's avatar
Eric Anholt committed
1057 1058
        }
    }
1059

1060
#ifdef GLAMOR_PIXMAP_DYNAMIC_UPLOAD
Eric Anholt's avatar
Eric Anholt committed
1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127
    if (source_status == GLAMOR_UPLOAD_PENDING
        && mask_status == GLAMOR_UPLOAD_PENDING
        && source_pixmap == mask_pixmap) {

        if (source->format != mask->format) {
            saved_source_format = source->format;

            if (!combine_pict_format(&source->format, source->format,
                                     mask->format, key.in)) {
                glamor_fallback("combine source %x mask %x failed.\n",
                                source->format, mask->format);
                goto fail;
            }

            if (source->format != saved_source_format) {
                glamor_picture_format_fixup(source, source_pixmap_priv);
            }
            /* XXX
             * By default, glamor_upload_picture_to_texture will wire alpha to 1
             * if one picture doesn't have alpha. So we don't do that again in
             * rendering function. But here is a special case, as source and
             * mask share the same texture but may have different formats. For
             * example, source doesn't have alpha, but mask has alpha. Then the
             * texture will have the alpha value for the mask. And will not wire
             * to 1 for the source. In this case, we have to use different shader
             * to wire the source's alpha to 1.
             *
             * But this may cause a potential problem if the source's repeat mode
             * is REPEAT_NONE, and if the source is smaller than the dest, then
             * for the region not covered by the source may be painted incorrectly.
             * because we wire the alpha to 1.
             *
             **/
            if (!PICT_FORMAT_A(saved_source_format)
                && PICT_FORMAT_A(mask->format))
                key.source = SHADER_SOURCE_TEXTURE;

            if (!PICT_FORMAT_A(mask->format)
                && PICT_FORMAT_A(saved_source_format))
                key.mask = SHADER_MASK_TEXTURE;

            mask_status = GLAMOR_NONE;
        }

        source_status = glamor_upload_picture_to_texture(source);
        if (source_status != GLAMOR_UPLOAD_DONE) {
            glamor_fallback("Failed to upload source texture.\n");
            goto fail;
        }
    }
    else {
        if (source_status == GLAMOR_UPLOAD_PENDING) {
            source_status = glamor_upload_picture_to_texture(source);
            if (source_status != GLAMOR_UPLOAD_DONE) {
                glamor_fallback("Failed to upload source texture.\n");
                goto fail;
            }
        }

        if (mask_status == GLAMOR_UPLOAD_PENDING) {
            mask_status = glamor_upload_picture_to_texture(mask);
            if (mask_status != GLAMOR_UPLOAD_DONE) {
                glamor_fallback("Failed to upload mask texture.\n");
                goto fail;
            }
        }
    }
1128
#endif
1129

Eric Anholt's avatar
Eric Anholt committed
1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151
    /*Before enter the rendering stage, we need to fixup
     * transformed source and mask, if the transform is not int translate. */
    if (key.source != SHADER_SOURCE_SOLID
        && source->transform
        && !pixman_transform_is_int_translate(source->transform)
        && source_pixmap_priv->type != GLAMOR_TEXTURE_LARGE) {
        if (!glamor_fixup_pixmap_priv(screen, source_pixmap_priv))
            goto fail;
    }
    if (key.mask != SHADER_MASK_NONE && key.mask != SHADER_MASK_SOLID
        && mask->transform
        && !pixman_transform_is_int_translate(mask->transform)
        && mask_pixmap_priv->type != GLAMOR_TEXTURE_LARGE) {
        if (!glamor_fixup_pixmap_priv(screen, mask_pixmap_priv))
            goto fail;
    }

    if (!glamor_set_composite_op(screen, op, op_info, dest, mask))
        goto fail;

    *shader = glamor_lookup_composite_shader(screen, &key);
    if ((*shader)->prog == 0) {
1152
        glamor_fallback("no shader program for this render acccel mode\n");
Eric Anholt's avatar
Eric Anholt committed
1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181
        goto fail;
    }

    if (key.source == SHADER_SOURCE_SOLID)
        memcpy(&(*shader)->source_solid_color[0],
               source_solid_color, 4 * sizeof(float));
    else {
        (*shader)->source_priv = source_pixmap_priv;
        (*shader)->source = source;
    }

    if (key.mask == SHADER_MASK_SOLID)
        memcpy(&(*shader)->mask_solid_color[0],
               mask_solid_color, 4 * sizeof(float));
    else {
        (*shader)->mask_priv = mask_pixmap_priv;
        (*shader)->mask = mask;
    }

    ret = TRUE;
    memcpy(s_key, &key, sizeof(key));
    *psaved_source_format = saved_source_format;
    goto done;

 fail:
    if (saved_source_format)
        source->format = saved_source_format;
 done:
    return ret;
1182 1183 1184
}

void
1185
glamor_composite_set_shader_blend(glamor_pixmap_private *dest_priv,
Eric Anholt's avatar
Eric Anholt committed
1186
                                  struct shader_key *key,
1187
                                  glamor_composite_shader *shader,
Eric Anholt's avatar
Eric Anholt committed
1188
                                  struct blendinfo *op_info)
1189
{
Eric Anholt's avatar
Eric Anholt committed
1190 1191 1192 1193
    glamor_screen_private *glamor_priv;

    glamor_priv = dest_priv->base.glamor_priv;

1194
    glamor_get_context(glamor_priv);
1195
    glUseProgram(shader->prog);
Eric Anholt's avatar
Eric Anholt committed
1196 1197

    if (key->source == SHADER_SOURCE_SOLID) {
1198
        glamor_set_composite_solid(shader->source_solid_color,
Eric Anholt's avatar
Eric Anholt committed
1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209
                                   shader->source_uniform_location);
    }
    else {
        glamor_set_composite_texture(glamor_priv, 0,
                                     shader->source,
                                     shader->source_priv, shader->source_wh,
                                     shader->source_repeat_mode);
    }

    if (key->mask != SHADER_MASK_NONE) {
        if (key->mask == SHADER_MASK_SOLID) {
1210
            glamor_set_composite_solid(shader->mask_solid_color,
Eric Anholt's avatar
Eric Anholt committed
1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221
                                       shader->mask_uniform_location);
        }
        else {
            glamor_set_composite_texture(glamor_priv, 1,
                                         shader->mask,
                                         shader->mask_priv, shader->mask_wh,
                                         shader->mask_repeat_mode);
        }
    }

    if (op_info->source_blend == GL_ONE && op_info->dest_blend == GL_ZERO) {
1222
        glDisable(GL_BLEND);
Eric Anholt's avatar
Eric Anholt committed
1223 1224
    }
    else {
1225 1226
        glEnable(GL_BLEND);
        glBlendFunc(op_info->source_blend, op_info->dest_blend);
Eric Anholt's avatar
Eric Anholt committed
1227 1228
    }

1229
    glamor_put_context(glamor_priv);
1230 1231 1232 1233
}

static Bool
glamor_composite_with_shader(CARD8 op,
Eric Anholt's avatar
Eric Anholt committed
1234 1235 1236
                             PicturePtr source,
                             PicturePtr mask,
                             PicturePtr dest,
1237 1238 1239 1240
                             glamor_pixmap_private *source_pixmap_priv,
                             glamor_pixmap_private *mask_pixmap_priv,
                             glamor_pixmap_private *dest_pixmap_priv,
                             int nrect, glamor_composite_rect_t *rects,
Eric Anholt's avatar
Eric Anholt committed
1241
                             Bool two_pass_ca)
1242
{
Eric Anholt's avatar
Eric Anholt committed
1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285
    ScreenPtr screen = dest->pDrawable->pScreen;
    glamor_screen_private *glamor_priv = dest_pixmap_priv->base.glamor_priv;
    PixmapPtr dest_pixmap = dest_pixmap_priv->base.pixmap;
    PixmapPtr source_pixmap = NULL;
    PixmapPtr mask_pixmap = NULL;
    GLfloat dst_xscale, dst_yscale;
    GLfloat mask_xscale = 1, mask_yscale = 1, src_xscale = 1, src_yscale = 1;
    struct shader_key key, key_ca;
    float *vertices;
    int dest_x_off, dest_y_off;
    int source_x_off, source_y_off;
    int mask_x_off, mask_y_off;
    PictFormatShort saved_source_format = 0;
    float src_matrix[9], mask_matrix[9];
    float *psrc_matrix = NULL, *pmask_matrix = NULL;
    int vert_stride = 4;
    int nrect_max;
    Bool ret = FALSE;
    glamor_composite_shader *shader = NULL, *shader_ca = NULL;
    struct blendinfo op_info, op_info_ca;

    if (!glamor_composite_choose_shader(op, source, mask, dest,
                                        source_pixmap_priv, mask_pixmap_priv,
                                        dest_pixmap_priv,
                                        &key, &shader, &op_info,
                                        &saved_source_format)) {
        glamor_fallback("glamor_composite_choose_shader failed\n");
        return ret;
    }
    if (two_pass_ca) {
        if (!glamor_composite_choose_shader(PictOpAdd, source, mask, dest,
                                            source_pixmap_priv,
                                            mask_pixmap_priv, dest_pixmap_priv,
                                            &key_ca, &shader_ca, &op_info_ca,
                                            &saved_source_format)) {
            glamor_fallback("glamor_composite_choose_shader failed\n");
            return ret;
        }
    }

    glamor_set_destination_pixmap_priv_nc(dest_pixmap_priv);
    glamor_composite_set_shader_blend(dest_pixmap_priv, &key, shader, &op_info);

1286
    glamor_get_context(glamor_priv);
Eric Anholt's avatar
Eric Anholt committed
1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402

    glamor_priv->has_source_coords = key.source != SHADER_SOURCE_SOLID;
    glamor_priv->has_mask_coords = (key.mask != SHADER_MASK_NONE &&
                                    key.mask != SHADER_MASK_SOLID);

    dest_pixmap = glamor_get_drawable_pixmap(dest->pDrawable);
    dest_pixmap_priv = glamor_get_pixmap_private(dest_pixmap);
    glamor_get_drawable_deltas(dest->pDrawable, dest_pixmap,
                               &dest_x_off, &dest_y_off);
    pixmap_priv_get_dest_scale(dest_pixmap_priv, &dst_xscale, &dst_yscale);

    if (glamor_priv->has_source_coords) {
        source_pixmap = source_pixmap_priv->base.pixmap;
        glamor_get_drawable_deltas(source->pDrawable,
                                   source_pixmap, &source_x_off, &source_y_off);
        pixmap_priv_get_scale(source_pixmap_priv, &src_xscale, &src_yscale);
        if (source->transform) {
            psrc_matrix = src_matrix;
            glamor_picture_get_matrixf(source, psrc_matrix);
        }
        vert_stride += 4;
    }

    if (glamor_priv->has_mask_coords) {
        mask_pixmap = mask_pixmap_priv->base.pixmap;
        glamor_get_drawable_deltas(mask->pDrawable, mask_pixmap,
                                   &mask_x_off, &mask_y_off);
        pixmap_priv_get_scale(mask_pixmap_priv, &mask_xscale, &mask_yscale);
        if (mask->transform) {
            pmask_matrix = mask_matrix;
            glamor_picture_get_matrixf(mask, pmask_matrix);
        }
        vert_stride += 4;
    }

    nrect_max = (vert_stride * nrect) > GLAMOR_COMPOSITE_VBO_VERT_CNT ?
        (GLAMOR_COMPOSITE_VBO_VERT_CNT / vert_stride) : nrect;

    while (nrect) {
        int mrect, rect_processed;
        int vb_stride;

        mrect = nrect > nrect_max ? nrect_max : nrect;
        glamor_setup_composite_vbo(screen, mrect * vert_stride);
        rect_processed = mrect;
        vb_stride = glamor_priv->vb_stride / sizeof(float);
        while (mrect--) {
            INT16 x_source;
            INT16 y_source;
            INT16 x_mask;
            INT16 y_mask;
            INT16 x_dest;
            INT16 y_dest;
            CARD16 width;
            CARD16 height;

            x_dest = rects->x_dst + dest_x_off;
            y_dest = rects->y_dst + dest_y_off;
            x_source = rects->x_src + source_x_off;
            y_source = rects->y_src + source_y_off;
            x_mask = rects->x_mask + mask_x_off;
            y_mask = rects->y_mask + mask_y_off;
            width = rects->width;
            height = rects->height;

            DEBUGF
                ("dest(%d,%d) source(%d %d) mask (%d %d), width %d height %d \n",
                 x_dest, y_dest, x_source, y_source, x_mask, y_mask, width,
                 height);
            vertices = (float *) (glamor_priv->vb + glamor_priv->vbo_offset);
            assert(glamor_priv->vbo_offset <
                   glamor_priv->vbo_size - glamor_priv->vb_stride);
            glamor_set_normalize_vcoords_ext(dest_pixmap_priv, dst_xscale,
                                             dst_yscale, x_dest, y_dest,
                                             x_dest + width, y_dest + height,
                                             glamor_priv->yInverted, vertices,
                                             vb_stride);
            vertices += 2;
            if (key.source != SHADER_SOURCE_SOLID) {
                glamor_set_normalize_tcoords_generic(source_pixmap_priv,
                                                     source->repeatType,
                                                     psrc_matrix, src_xscale,
                                                     src_yscale, x_source,
                                                     y_source, x_source + width,
                                                     y_source + height,
                                                     glamor_priv->yInverted,
                                                     vertices, vb_stride);
                vertices += 2;
            }

            if (key.mask != SHADER_MASK_NONE && key.mask != SHADER_MASK_SOLID) {
                glamor_set_normalize_tcoords_generic(mask_pixmap_priv,
                                                     mask->repeatType,
                                                     pmask_matrix, mask_xscale,
                                                     mask_yscale, x_mask,
                                                     y_mask, x_mask + width,
                                                     y_mask + height,
                                                     glamor_priv->yInverted,
                                                     vertices, vb_stride);
            }
            glamor_priv->render_nr_verts += 4;
            glamor_priv->vbo_offset += glamor_priv->vb_stride * 4;
            rects++;
        }
        glamor_flush_composite_rects(screen);
        nrect -= rect_processed;
        if (two_pass_ca) {
            glamor_composite_set_shader_blend(dest_pixmap_priv,
                                              &key_ca, shader_ca, &op_info_ca);
            glamor_flush_composite_rects(screen);
            if (nrect)
                glamor_composite_set_shader_blend(dest_pixmap_priv,
                                                  &key, shader, &op_info);
        }
    }

1403 1404 1405 1406 1407 1408
    glBindBuffer(GL_ARRAY_BUFFER, 0);
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
    glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
    glDisableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
    glDisableVertexAttribArray(GLAMOR_VERTEX_MASK);
    glDisable(GL_BLEND);
Eric Anholt's avatar
Eric Anholt committed
1409
    DEBUGF("finish rendering.\n");
1410
    glUseProgram(0);
Eric Anholt's avatar
Eric Anholt committed
1411 1412 1413 1414
    glamor_priv->state = RENDER_STATE;
    glamor_priv->render_idle_cnt = 0;
    if (saved_source_format)
        source->format = saved_source_format;
1415
    glamor_put_context(glamor_priv);
Eric Anholt's avatar
Eric Anholt committed
1416 1417 1418

    ret = TRUE;
    return ret;
1419 1420
}

1421
PicturePtr
1422
glamor_convert_gradient_picture(ScreenPtr screen,
1423 1424 1425
                                PicturePtr source,
                                int x_source,
                                int y_source, int width, int height)
1426
{
Eric Anholt's avatar
Eric Anholt committed
1427 1428 1429 1430 1431 1432 1433 1434 1435
    PixmapPtr pixmap;
    PicturePtr dst = NULL;
    int error;
    PictFormatShort format;

    if (!source->pDrawable)
        format = PICT_a8r8g8b8;
    else
        format = source->format;
1436
#ifdef GLAMOR_GRADIENT_SHADER
Eric Anholt's avatar
Eric Anholt committed
1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455
    if (!source->pDrawable) {
        if (source->pSourcePict->type == SourcePictTypeLinear) {
            dst = glamor_generate_linear_gradient_picture(screen,
                                                          source, x_source,
                                                          y_source, width,
                                                          height, format);
        }
        else if (source->pSourcePict->type == SourcePictTypeRadial) {
            dst = glamor_generate_radial_gradient_picture(screen,
                                                          source, x_source,
                                                          y_source, width,
                                                          height, format);
        }

        if (dst) {
#if 0                           /* Debug to compare it to pixman, Enable it if needed. */
            glamor_compare_pictures(screen, source,
                                    dst, x_source, y_source, width, height,
                                    0, 3);
1456
#endif
Eric Anholt's avatar
Eric Anholt committed
1457 1458 1459
            return dst;
        }
    }
1460
#endif
Eric Anholt's avatar
Eric Anholt committed
1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483
    pixmap = glamor_create_pixmap(screen,
                                  width,
                                  height,
                                  PIXMAN_FORMAT_DEPTH(format),
                                  GLAMOR_CREATE_PIXMAP_CPU);

    if (!pixmap)
        return NULL;

    dst = CreatePicture(0,
                        &pixmap->drawable,
                        PictureMatchFormat(screen,
                                           PIXMAN_FORMAT_DEPTH(format),
                                           format), 0, 0, serverClient, &error);
    glamor_destroy_pixmap(pixmap);
    if (!dst)
        return NULL;

    ValidatePicture(dst);

    fbComposite(PictOpSrc, source, NULL, dst, x_source, y_source,
                0, 0, 0, 0, width, height);
    return dst;
1484 1485
}

1486 1487
Bool
glamor_composite_clipped_region(CARD8 op,
Eric Anholt's avatar
Eric Anholt committed
1488 1489 1490
                                PicturePtr source,
                                PicturePtr mask,
                                PicturePtr dest,
1491 1492 1493
                                glamor_pixmap_private *source_pixmap_priv,
                                glamor_pixmap_private *mask_pixmap_priv,
                                glamor_pixmap_private *dest_pixmap_priv,
Eric Anholt's avatar
Eric Anholt committed
1494 1495 1496 1497
                                RegionPtr region,
                                int x_source,
                                int y_source,
                                int x_mask, int y_mask, int x_dest, int y_dest)
1498
{
Eric Anholt's avatar
Eric Anholt committed
1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658
    ScreenPtr screen = dest->pDrawable->pScreen;
    PixmapPtr source_pixmap = NULL, mask_pixmap = NULL;
    PicturePtr temp_src = source, temp_mask = mask;
    glamor_pixmap_private *temp_src_priv = source_pixmap_priv;
    glamor_pixmap_private *temp_mask_priv = mask_pixmap_priv;
    int x_temp_src, y_temp_src, x_temp_mask, y_temp_mask;
    BoxPtr extent;
    glamor_composite_rect_t rect[10];
    glamor_composite_rect_t *prect = rect;
    int prect_size = ARRAY_SIZE(rect);
    int ok = FALSE;
    int i;
    int width;
    int height;
    BoxPtr box;
    int nbox;
    Bool two_pass_ca = FALSE;

    extent = RegionExtents(region);
    box = RegionRects(region);
    nbox = RegionNumRects(region);
    width = extent->x2 - extent->x1;
    height = extent->y2 - extent->y1;

    x_temp_src = x_source;
    y_temp_src = y_source;
    x_temp_mask = x_mask;
    y_temp_mask = y_mask;

    DEBUGF("clipped (%d %d) (%d %d) (%d %d) width %d height %d \n",
           x_source, y_source, x_mask, y_mask, x_dest, y_dest, width, height);

    if (source_pixmap_priv)
        source_pixmap = source_pixmap_priv->base.pixmap;

    if (mask_pixmap_priv)
        mask_pixmap = mask_pixmap_priv->base.pixmap;

    /* XXX is it possible source mask have non-zero drawable.x/y? */
    if (source
        && ((!source->pDrawable
             && (source->pSourcePict->type != SourcePictTypeSolidFill))
            || (source->pDrawable
                && !GLAMOR_PIXMAP_PRIV_HAS_FBO(source_pixmap_priv)
                && (source_pixmap->drawable.width != width
                    || source_pixmap->drawable.height != height)))) {
        temp_src =
            glamor_convert_gradient_picture(screen, source,
                                            extent->x1 + x_source - x_dest,
                                            extent->y1 + y_source - y_dest,
                                            width, height);
        if (!temp_src) {
            temp_src = source;
            goto out;
        }
        temp_src_priv =
            glamor_get_pixmap_private((PixmapPtr) (temp_src->pDrawable));
        x_temp_src = -extent->x1 + x_dest;
        y_temp_src = -extent->y1 + y_dest;
    }

    if (mask
        &&
        ((!mask->pDrawable
          && (mask->pSourcePict->type != SourcePictTypeSolidFill))
         || (mask->pDrawable && !GLAMOR_PIXMAP_PRIV_HAS_FBO(mask_pixmap_priv)
             && (mask_pixmap->drawable.width != width
                 || mask_pixmap->drawable.height != height)))) {
        /* XXX if mask->pDrawable is the same as source->pDrawable, we have an opportunity
         * to do reduce one convertion. */
        temp_mask =
            glamor_convert_gradient_picture(screen, mask,
                                            extent->x1 + x_mask - x_dest,
                                            extent->y1 + y_mask - y_dest,
                                            width, height);
        if (!temp_mask) {
            temp_mask = mask;
            goto out;
        }
        temp_mask_priv =
            glamor_get_pixmap_private((PixmapPtr) (temp_mask->pDrawable));
        x_temp_mask = -extent->x1 + x_dest;
        y_temp_mask = -extent->y1 + y_dest;
    }
    /* Do two-pass PictOpOver componentAlpha, until we enable
     * dual source color blending.
     */

    if (mask && mask->componentAlpha) {
        if (op == PictOpOver) {
            two_pass_ca = TRUE;
            op = PictOpOutReverse;
        }
    }

    if (!mask && temp_src) {
        if (glamor_composite_with_copy(op, temp_src, dest,
                                       x_temp_src, y_temp_src,
                                       x_dest, y_dest, region)) {
            ok = TRUE;
            goto out;
        }
    }

    /*XXXXX, self copy? */

    x_dest += dest->pDrawable->x;
    y_dest += dest->pDrawable->y;
    if (temp_src && temp_src->pDrawable) {
        x_temp_src += temp_src->pDrawable->x;
        y_temp_src += temp_src->pDrawable->y;
    }
    if (temp_mask && temp_mask->pDrawable) {
        x_temp_mask += temp_mask->pDrawable->x;
        y_temp_mask += temp_mask->pDrawable->y;
    }

    if (nbox > ARRAY_SIZE(rect)) {
        prect = calloc(nbox, sizeof(*prect));
        if (prect)
            prect_size = nbox;
        else {
            prect = rect;
            prect_size = ARRAY_SIZE(rect);
        }
    }
    while (nbox) {
        int box_cnt;

        box_cnt = nbox > prect_size ? prect_size : nbox;
        for (i = 0; i < box_cnt; i++) {
            prect[i].x_src = box[i].x1 + x_temp_src - x_dest;
            prect[i].y_src = box[i].y1 + y_temp_src - y_dest;
            prect[i].x_mask = box[i].x1 + x_temp_mask - x_dest;
            prect[i].y_mask = box[i].y1 + y_temp_mask - y_dest;
            prect[i].x_dst = box[i].x1;
            prect[i].y_dst = box[i].y1;
            prect[i].width = box[i].x2 - box[i].x1;
            prect[i].height = box[i].y2 - box[i].y1;
            DEBUGF("dest %d %d \n", prect[i].x_dst, prect[i].y_dst);
        }
        ok = glamor_composite_with_shader(op, temp_src, temp_mask, dest,
                                          temp_src_priv, temp_mask_priv,
                                          dest_pixmap_priv,
                                          box_cnt, prect, two_pass_ca);
        if (!ok)
            break;
        nbox -= box_cnt;
        box += box_cnt;
    }

    if (prect != rect)
        free(prect);
 out:
    if (temp_src != source)
        FreePicture(temp_src, 0);
    if (temp_mask != mask)
        FreePicture(temp_mask, 0);

    return ok;
1659 1660 1661 1662
}

static Bool
_glamor_composite(CARD8 op,
Eric Anholt's avatar
Eric Anholt committed
1663 1664 1665 1666 1667 1668 1669 1670 1671
                  PicturePtr source,
                  PicturePtr mask,
                  PicturePtr dest,
                  INT16 x_source,
                  INT16 y_source,
                  INT16 x_mask,
                  INT16 y_mask,
                  INT16 x_dest, INT16 y_dest,
                  CARD16 width, CARD16 height, Bool fallback)
1672
{