glamor_render.c 28.3 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 25 26 27 28 29 30 31 32 33 34 35 36
/*
 * 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>
 *
 */

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

#include "glamor_priv.h"

#ifdef RENDER
#include "mipict.h"
37
#include "fbpict.h"
38 39 40 41

#include "glu3/glu3.h"

struct shader_key {
42 43
    enum shader_source source;
    enum shader_mask mask;
44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71
};

struct blendinfo {
    Bool dest_alpha;
    Bool source_alpha;
    GLenum source_blend;
    GLenum dest_blend;
};

static struct blendinfo composite_op_info[] = {
    [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},
};

static GLuint
glamor_create_composite_fs(struct shader_key *key)
{
72
    const char *source_pixmap_header =
73
	"uniform sampler2D source_sampler;\n";
74 75 76
    const char *source_solid_header =
	"uniform vec4 source;\n";
    const char *mask_pixmap_header =
77
	"uniform sampler2D mask_sampler;\n";
78 79
    const char *mask_solid_header =
	"uniform vec4 mask;\n";
80 81
    const char *main_opening =
	"void main()\n"
82
	"{\n";
83
    const char *source_alpha_pixmap_fetch =
84
	"	vec4 source = texture2D(source_sampler, gl_TexCoord[0].xy);\n";
85 86 87
    const char *source_pixmap_fetch =
	"	vec4 source = vec4(texture2D(source_sampler, "
	"				     gl_TexCoord[0].xy).rgb, 1.0);\n";
88
    const char *mask_alpha_pixmap_fetch =
89
	"	vec4 mask = texture2D(mask_sampler, gl_TexCoord[1].xy);\n";
90 91 92
    const char *mask_pixmap_fetch =
	"	vec4 mask = vec4(texture2D(mask_sampler, "
	"				   gl_TexCoord[1].xy).rgb, 1.0);\n";
93
    const char *source_in_mask =
94
	"	gl_FragColor = source * mask.a;\n";
95 96
    const char *source_only =
	"	gl_FragColor = source;\n";
97 98 99
    const char *main_closing =
	"}\n";
    char *source;
100 101 102 103
    const char *source_setup = "";
    const char *source_fetch = "";
    const char *mask_setup = "";
    const char *mask_fetch = "";
104
    const char *in;
105 106
    GLuint prog;

107 108
    switch (key->source) {
    case SHADER_SOURCE_SOLID:
109
	source_setup = source_solid_header;
110 111
	break;
    case SHADER_SOURCE_TEXTURE_ALPHA:
112
	source_setup = source_pixmap_header;
113 114
	source_fetch = source_alpha_pixmap_fetch;
	break;
115 116 117 118
    case SHADER_SOURCE_TEXTURE:
	source_setup = source_pixmap_header;
	source_fetch = source_pixmap_fetch;
	break;
119
    default:
120
	FatalError("Bad composite shader source");
121
    }
122 123 124 125 126 127 128 129 130 131 132

    switch (key->mask) {
    case SHADER_MASK_NONE:
	break;
    case SHADER_MASK_SOLID:
	mask_setup = mask_solid_header;
	break;
    case SHADER_MASK_TEXTURE_ALPHA:
	mask_setup = mask_pixmap_header;
	mask_fetch = mask_alpha_pixmap_fetch;
	break;
133 134 135 136
    case SHADER_MASK_TEXTURE:
	mask_setup = mask_pixmap_header;
	mask_fetch = mask_pixmap_fetch;
	break;
137 138 139 140 141 142 143 144
    default:
	FatalError("Bad composite shader mask");
    }

    if (key->mask == SHADER_MASK_NONE) {
	in = source_only;
    } else {
	in = source_in_mask;
145
    }
146

147 148 149
    source = XNFprintf("%s%s%s%s%s%s%s",
		       source_setup,
		       mask_setup,
150
		       main_opening,
151 152
		       source_fetch,
		       mask_fetch,
153
		       in,
154 155 156 157 158 159 160 161 162 163 164 165 166 167
		       main_closing);

    prog = glamor_compile_glsl_prog(GL_FRAGMENT_SHADER_ARB, source);
    xfree(source);

    return prog;
}

static GLuint
glamor_create_composite_vs(struct shader_key *key)
{
    const char *main_opening =
	"void main()\n"
	"{\n"
168 169
	"	gl_Position = gl_Vertex;\n";
    const char *source_coords =
170
	"	gl_TexCoord[0] = gl_MultiTexCoord0;\n";
171
    const char *mask_coords =
172
	"	gl_TexCoord[1] = gl_MultiTexCoord1;\n";
173 174
    const char *main_closing =
	"}\n";
175 176
    const char *source_coords_setup = "";
    const char *mask_coords_setup = "";
177 178 179
    char *source;
    GLuint prog;

180 181 182 183 184 185 186
    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;

    source = XNFprintf("%s%s%s%s",
187
		       main_opening,
188 189
		       source_coords_setup,
		       mask_coords_setup,
190 191 192 193 194 195 196 197 198
		       main_closing);

    prog = glamor_compile_glsl_prog(GL_VERTEX_SHADER_ARB, source);
    xfree(source);

    return prog;
}

static void
199 200
glamor_create_composite_shader(ScreenPtr screen, struct shader_key *key,
			       glamor_composite_shader *shader)
201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219
{
    GLuint vs, fs, prog;
    GLint source_sampler_uniform_location, mask_sampler_uniform_location;

    vs = glamor_create_composite_vs(key);
    if (vs == 0)
	return;
    fs = glamor_create_composite_fs(key);
    if (fs == 0)
	return;

    prog = glCreateProgramObjectARB();
    glAttachObjectARB(prog, vs);
    glAttachObjectARB(prog, fs);
    glamor_link_glsl_prog(prog);

    shader->prog = prog;

    glUseProgramObjectARB(prog);
220

221
    if (key->source == SHADER_SOURCE_SOLID) {
222 223 224 225 226 227 228
	shader->source_uniform_location = glGetUniformLocationARB(prog,
								  "source");
    } else {
	source_sampler_uniform_location = glGetUniformLocationARB(prog,
								  "source_sampler");
	glUniform1i(source_sampler_uniform_location, 0);
    }
229

230 231
    if (key->mask != SHADER_MASK_NONE) {
	if (key->mask == SHADER_MASK_SOLID) {
232 233 234 235 236 237 238
	    shader->mask_uniform_location = glGetUniformLocationARB(prog,
								    "mask");
	} else {
	    mask_sampler_uniform_location = glGetUniformLocationARB(prog,
								    "mask_sampler");
	    glUniform1i(mask_sampler_uniform_location, 1);
	}
239 240 241
    }
}

242 243
static glamor_composite_shader *
glamor_lookup_composite_shader(ScreenPtr screen, struct shader_key *key)
244
{
245 246
    glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
    glamor_composite_shader *shader;
247

248 249 250
    shader = &glamor_priv->composite_shader[key->source][key->mask];
    if (shader->prog == 0)
	glamor_create_composite_shader(screen, key, shader);
251

252 253 254 255 256 257
    return shader;
}

void
glamor_init_composite_shaders(ScreenPtr screen)
{
258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309
}

static Bool
glamor_set_composite_op(ScreenPtr screen,
			CARD8 op, PicturePtr dest, PicturePtr mask)
{
    GLenum source_blend, dest_blend;
    struct blendinfo *op_info;

    if (op >= ARRAY_SIZE(composite_op_info)) {
	ErrorF("unsupported render op\n");
	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 (source_blend != GL_ZERO) {
	    ErrorF("Dual-source composite blending not supported\n");
	    return GL_FALSE;
	}
	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;
    }

    if (source_blend == GL_ONE && dest_blend == GL_ZERO) {
	glDisable(GL_BLEND);
    } else {
	glEnable(GL_BLEND);
	glBlendFunc(source_blend, dest_blend);
    }
    return TRUE;
}

static void
glamor_set_composite_texture(ScreenPtr screen, int unit, PicturePtr picture,
310
			     glamor_pixmap_private *pixmap_priv)
311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345
{
    glActiveTexture(GL_TEXTURE0 + unit);
    glBindTexture(GL_TEXTURE_2D, pixmap_priv->tex);
    switch (picture->repeatType) {
    case RepeatNone:
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
	break;
    case RepeatNormal:
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
	break;
    case RepeatPad:
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
	break;
    case RepeatReflect:
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_MIRRORED_REPEAT);
	break;
    }

    switch (picture->filter) {
    case PictFilterNearest:
	glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
	glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
        break;
    case PictFilterBilinear:
    default:
	glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
        break;
    }

    glEnable(GL_TEXTURE_2D);
346 347 348 349 350 351 352 353 354 355 356 357 358 359
}

static void
glamor_set_composite_solid(PicturePtr picture, GLint uniform_location)
{
    CARD32 c = picture->pSourcePict->solidFill.color; /* a8r8g8b8 */
    float color[4]; /* rgba */

    color[0] = ((c >> 16) & 0xff) / 255.0;
    color[1] = ((c >> 8) & 0xff) / 255.0;
    color[2] = ((c >> 0) & 0xff) / 255.0;
    color[3] = ((c >> 24) & 0xff) / 255.0;

    glUniform4fvARB(uniform_location, 1, color);
360 361
}

362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387
static int
compatible_formats (CARD8 op, PicturePtr dst, PicturePtr src)
{
    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;
}

388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408
static char
glamor_get_picture_location(PicturePtr picture)
{
    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);
}

409
static Bool
410 411 412 413 414 415 416 417 418
glamor_composite_with_copy(CARD8 op,
			   PicturePtr source,
			   PicturePtr dest,
			   INT16 x_source,
			   INT16 y_source,
			   INT16 x_dest,
			   INT16 y_dest,
			   CARD16 width,
			   CARD16 height)
419 420 421
{
    RegionRec region;

422 423 424
    if (!source->pDrawable)
	return FALSE;

425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454
    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 (!miComputeCompositeRegion(&region,
				  source, NULL, dest,
				  x_source, y_source,
				  0, 0,
				  x_dest, y_dest,
				  width, height))
	return TRUE;

    glamor_copy_n_to_n(source->pDrawable,
		       dest->pDrawable, NULL,
		       REGION_RECTS(&region),
		       REGION_NUM_RECTS(&region),
		       x_source - x_dest, y_source - y_dest,
		       FALSE, FALSE, 0, NULL);
    REGION_UNINIT(dest->pDrawable->pScreen,
		  &region);
    return TRUE;
}

455 456 457 458 459 460 461
static Bool
good_source_format(PicturePtr picture)
{
    switch (picture->format) {
    case PICT_a8:
    case PICT_a8r8g8b8:
	return TRUE;
462 463 464 465 466 467 468 469
    case PICT_x8r8g8b8:
	/* In order to support formats with no alpha, we have to wire the
	 * alpha to 1 in the shader, which conflicts with
	 * GL_CLAMP_TO_BORDERing to transparent.  We could possibly compute
	 * coverage of the texels in the sampling area if we need to, but
	 * that isn't implemented today.
	 */
	return (picture->repeatType != RepeatNone);
470 471 472 473 474 475 476 477 478 479 480 481 482
    default:
	glamor_fallback("Bad source format 0x%08x\n", picture->format);
	return FALSE;
    }
}

static Bool
good_mask_format(PicturePtr picture)
{
    switch (picture->format) {
    case PICT_a8:
    case PICT_a8r8g8b8:
	return TRUE;
483 484 485 486 487 488 489 490
    case PICT_x8r8g8b8:
	/* In order to support formats with no alpha, we have to wire the
	 * alpha to 1 in the shader, which conflicts with
	 * GL_CLAMP_TO_BORDERing to transparent.  We could possibly compute
	 * coverage of the texels in the sampling area if we need to, but
	 * that isn't implemented today.
	 */
	return (picture->repeatType != RepeatNone);
491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510
    default:
	glamor_fallback("Bad mask format 0x%08x\n", picture->format);
	return FALSE;
    }
}

static Bool
good_dest_format(PicturePtr picture)
{
    switch (picture->format) {
    case PICT_a8:
    case PICT_a8r8g8b8:
    case PICT_x8r8g8b8:
	return TRUE;
    default:
	glamor_fallback("Bad dest format 0x%08x\n", picture->format);
	return FALSE;
    }
}

511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540
static inline float
xFixedToFloat(pixman_fixed_t val)
{
    return ((float)xFixedToInt(val) + ((float)xFixedFrac(val) / 65536.0));
}

static void
glamor_set_transformed_point(PicturePtr picture, PixmapPtr pixmap,
			     float *texcoord, int x, int y)
{
    float result[3];
    int i;
    float tx, ty;

    if (picture->transform) {
	for (i = 0; i < 3; i++) {
	    result[i] = (xFixedToFloat(picture->transform->matrix[i][0]) * x +
			 xFixedToFloat(picture->transform->matrix[i][1]) * y +
			 xFixedToFloat(picture->transform->matrix[i][2]));
	}
	tx = result[0] / result[2];
	ty = result[1] / result[2];
    } else {
	tx = x;
	ty = y;
    }
    texcoord[0] = t_from_x_coord_x(pixmap, tx);
    texcoord[1] = t_from_x_coord_y(pixmap, ty);
}

541 542 543 544 545 546 547 548 549 550 551 552 553
static Bool
glamor_composite_with_shader(CARD8 op,
			     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)
554 555 556 557
{
    ScreenPtr screen = dest->pDrawable->pScreen;
    PixmapPtr dest_pixmap = glamor_get_drawable_pixmap(dest->pDrawable);
    PixmapPtr source_pixmap, mask_pixmap = NULL;
558 559
    glamor_pixmap_private *source_pixmap_priv = NULL;
    glamor_pixmap_private *mask_pixmap_priv = NULL;
560 561 562
    struct shader_key key;
    glamor_composite_shader *shader;
    RegionRec region;
563
    float vertices[4][2], source_texcoords[4][2], mask_texcoords[4][2];
564
    int i;
565
    BoxPtr box;
566
    int dst_x_off, dst_y_off;
567

568
    memset(&key, 0, sizeof(key));
569
    if (!source->pDrawable) {
570
	if (source->pSourcePict->type == SourcePictTypeSolidFill) {
571
	    key.source = SHADER_SOURCE_SOLID;
572
	} else {
573
	    glamor_fallback("gradient source\n");
574 575
	    goto fail;
	}
576
    } else {
577 578 579 580 581
	if (PICT_FORMAT_A(source->format) != 0) {
	    key.source = SHADER_SOURCE_TEXTURE_ALPHA;
	} else {
	    key.source = SHADER_SOURCE_TEXTURE;
	}
582
    }
583 584 585 586 587 588 589 590
    if (mask) {
	if (!mask->pDrawable) {
	    if (mask->pSourcePict->type == SourcePictTypeSolidFill) {
		key.mask = SHADER_MASK_SOLID;
	    } else {
		glamor_fallback("gradient mask\n");
		goto fail;
	    }
591
	} else {
592 593 594 595 596
	    if (PICT_FORMAT_A(mask->format) != 0) {
		key.mask = SHADER_MASK_TEXTURE_ALPHA;
	    } else {
		key.mask = SHADER_MASK_TEXTURE;
	    }
597
	}
598 599
    } else {
	key.mask = SHADER_MASK_NONE;
600 601
    }
    if (source->alphaMap) {
602
	glamor_fallback("source alphaMap\n");
603 604 605
	goto fail;
    }
    if (mask && mask->alphaMap) {
606
	glamor_fallback("mask alphaMap\n");
607 608 609
	goto fail;
    }

610 611
    if (key.source == SHADER_SOURCE_TEXTURE ||
	key.source == SHADER_SOURCE_TEXTURE_ALPHA) {
612 613 614
	source_pixmap = glamor_get_drawable_pixmap(source->pDrawable);
	source_pixmap_priv = glamor_get_pixmap_private(source_pixmap);
	if (source_pixmap == dest_pixmap) {
615
	    glamor_fallback("glamor_composite(): source == dest\n");
616 617 618
	    goto fail;
	}
	if (!source_pixmap_priv || source_pixmap_priv->tex == 0) {
619
	    glamor_fallback("glamor_composite(): no FBO in source\n");
620 621
	    goto fail;
	}
622 623
	if (!good_source_format(source))
	    goto fail;
624
    }
625 626
    if (key.mask == SHADER_MASK_TEXTURE ||
	key.mask == SHADER_MASK_TEXTURE_ALPHA) {
627 628 629
	mask_pixmap = glamor_get_drawable_pixmap(mask->pDrawable);
	mask_pixmap_priv = glamor_get_pixmap_private(mask_pixmap);
	if (mask_pixmap == dest_pixmap) {
630
	    glamor_fallback("glamor_composite(): mask == dest\n");
631 632 633
	    goto fail;
	}
	if (!mask_pixmap_priv || mask_pixmap_priv->tex == 0) {
634
	    glamor_fallback("glamor_composite(): no FBO in mask\n");
635 636
	    goto fail;
	}
637 638
	if (!good_mask_format(mask))
	    goto fail;
639
    }
640 641
    if (!good_dest_format(dest))
	goto fail;
642 643 644

    shader = glamor_lookup_composite_shader(screen, &key);
    if (shader->prog == 0) {
645 646
	glamor_fallback("glamor_composite(): "
			"no shader program for this render acccel mode\n");
647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669
	goto fail;
    }

    glUseProgramObjectARB(shader->prog);

    if (!glamor_set_destination_pixmap(dest_pixmap))
	goto fail;

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

    x_dest += dest->pDrawable->x;
    y_dest += dest->pDrawable->y;
    if (source->pDrawable) {
	x_source += source->pDrawable->x;
	y_source += source->pDrawable->y;
    }
    if (mask && mask->pDrawable) {
	x_mask += mask->pDrawable->x;
	y_mask += mask->pDrawable->y;
    }

670
    if (key.source == SHADER_SOURCE_SOLID) {
671 672
	glamor_set_composite_solid(source, shader->source_uniform_location);
    } else {
673
	glamor_set_composite_texture(screen, 0, source, source_pixmap_priv);
674
    }
675 676
    if (key.mask != SHADER_MASK_NONE) {
	if (key.mask == SHADER_MASK_SOLID) {
677 678
	    glamor_set_composite_solid(mask, shader->mask_uniform_location);
	} else {
679
	    glamor_set_composite_texture(screen, 1, mask, mask_pixmap_priv);
680 681
	}
    }
682 683 684 685 686 687 688

    if (!miComputeCompositeRegion(&region,
				  source, mask, dest,
				  x_source, y_source,
				  x_mask, y_mask,
				  x_dest, y_dest,
				  width, height))
689
	goto done;
690

691 692 693 694

    glVertexPointer(2, GL_FLOAT, sizeof(float) * 2, vertices);
    glEnableClientState(GL_VERTEX_ARRAY);

695
    if (key.source != SHADER_SOURCE_SOLID) {
696 697 698 699 700
	glClientActiveTexture(GL_TEXTURE0);
	glTexCoordPointer(2, GL_FLOAT, sizeof(float) * 2, source_texcoords);
	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
    }

701
    if (key.mask != SHADER_MASK_NONE && key.mask != SHADER_MASK_SOLID) {
702 703 704 705 706
	glClientActiveTexture(GL_TEXTURE1);
	glTexCoordPointer(2, GL_FLOAT, sizeof(float) * 2, mask_texcoords);
	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
    }

707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723
    glamor_get_drawable_deltas(dest->pDrawable, dest_pixmap,
			       &dst_x_off, &dst_y_off);
    if (source_pixmap) {
	int dx, dy;

	glamor_get_drawable_deltas(source->pDrawable, source_pixmap, &dx, &dy);
	x_source += dx;
	y_source += dy;
    }
    if (mask_pixmap) {
	int dx, dy;

	glamor_get_drawable_deltas(mask->pDrawable, mask_pixmap, &dx, &dy);
	x_mask += dx;
	y_mask += dy;
    }

724
    box = REGION_RECTS(&region);
725
    for (i = 0; i < REGION_NUM_RECTS(&region); i++) {
726 727 728 729 730 731 732 733
	vertices[0][0] = v_from_x_coord_x(dest_pixmap, box[i].x1 + dst_x_off);
	vertices[0][1] = v_from_x_coord_y(dest_pixmap, box[i].y1 + dst_y_off);
	vertices[1][0] = v_from_x_coord_x(dest_pixmap, box[i].x2 + dst_x_off);
	vertices[1][1] = v_from_x_coord_y(dest_pixmap, box[i].y1 + dst_y_off);
	vertices[2][0] = v_from_x_coord_x(dest_pixmap, box[i].x2 + dst_x_off);
	vertices[2][1] = v_from_x_coord_y(dest_pixmap, box[i].y2 + dst_y_off);
	vertices[3][0] = v_from_x_coord_x(dest_pixmap, box[i].x1 + dst_x_off);
	vertices[3][1] = v_from_x_coord_y(dest_pixmap, box[i].y2 + dst_y_off);
734

735
	if (key.source != SHADER_SOURCE_SOLID) {
736 737 738 739
	    int tx1 = box[i].x1 + x_source - x_dest;
	    int ty1 = box[i].y1 + y_source - y_dest;
	    int tx2 = box[i].x2 + x_source - x_dest;
	    int ty2 = box[i].y2 + y_source - y_dest;
740 741 742 743 744 745 746 747 748

	    glamor_set_transformed_point(source, source_pixmap,
					 source_texcoords[0], tx1, ty1);
	    glamor_set_transformed_point(source, source_pixmap,
					 source_texcoords[1], tx2, ty1);
	    glamor_set_transformed_point(source, source_pixmap,
					 source_texcoords[2], tx2, ty2);
	    glamor_set_transformed_point(source, source_pixmap,
					 source_texcoords[3], tx1, ty2);
749 750
	}

751
	if (key.mask != SHADER_MASK_NONE && key.mask != SHADER_MASK_SOLID) {
752 753 754 755 756 757 758 759 760 761 762 763 764
	    float tx1 = box[i].x1 + x_mask - x_dest;
	    float ty1 = box[i].y1 + y_mask - y_dest;
	    float tx2 = box[i].x2 + x_mask - x_dest;
	    float ty2 = box[i].y2 + y_mask - y_dest;

	    glamor_set_transformed_point(mask, mask_pixmap,
					 mask_texcoords[0], tx1, ty1);
	    glamor_set_transformed_point(mask, mask_pixmap,
					 mask_texcoords[1], tx2, ty1);
	    glamor_set_transformed_point(mask, mask_pixmap,
					 mask_texcoords[2], tx2, ty2);
	    glamor_set_transformed_point(mask, mask_pixmap,
					 mask_texcoords[3], tx1, ty2);
765 766 767 768 769 770 771 772 773 774 775 776 777
	}
#if 0
 else memset(mask_texcoords, 0, sizeof(mask_texcoords));
	for (i = 0; i < 4; i++) {
	    ErrorF("%d: (%04.4f, %04.4f) (%04.4f, %04.4f) (%04.4f, %04.4f)\n",
		   i,
		   source_texcoords[i][0], source_texcoords[i][1],
		   mask_texcoords[i][0], mask_texcoords[i][1],
		   vertices[i][0], vertices[i][1]);
	}
#endif

	glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
778 779
    }

780 781 782 783 784 785 786 787
    glClientActiveTexture(GL_TEXTURE0);
    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
    glClientActiveTexture(GL_TEXTURE1);
    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
    glDisableClientState(GL_VERTEX_ARRAY);

done:
    REGION_UNINIT(dst->pDrawable->pScreen, &region);
788
    glDisable(GL_BLEND);
789 790 791 792
    glActiveTexture(GL_TEXTURE0);
    glDisable(GL_TEXTURE_2D);
    glActiveTexture(GL_TEXTURE1);
    glDisable(GL_TEXTURE_2D);
793
    glUseProgramObjectARB(0);
794
    return TRUE;
795 796

fail:
797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851
    glDisable(GL_BLEND);
    glUseProgramObjectARB(0);
    return FALSE;
}

void
glamor_composite(CARD8 op,
		 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)
{
    /* Do two-pass PictOpOver componentAlpha, until we enable
     * dual source color blending.
     */
    if (mask && mask->componentAlpha)
	goto fail;
    if (mask && mask->componentAlpha && op == PictOpOver) {
	glamor_composite(PictOpOutReverse,
			 source, mask, dest,
			 x_source, y_source,
			 x_mask, y_mask,
			 x_dest, y_dest,
			 width, height);
	glamor_composite(PictOpAdd,
			 source, mask, dest,
			 x_source, y_source,
			 x_mask, y_mask,
			 x_dest, y_dest,
			 width, height);
	return;
    }

    if (!mask) {
	if (glamor_composite_with_copy(op, source, dest,
				       x_source, y_source,
				       x_dest, y_dest,
				       width, height))
	    return;
    }

    if (glamor_composite_with_shader(op, source, mask, dest,
				     x_source, y_source,
				     x_mask, y_mask,
				     x_dest, y_dest,
				     width, height))
	return;

852
    glamor_fallback("glamor_composite(): "
853 854 855 856 857 858
		    "from picts %p/%p(%c,%c) to pict %p (%c)\n",
		    source, mask,
		    glamor_get_picture_location(source),
		    glamor_get_picture_location(mask),
		    dest,
		    glamor_get_picture_location(dest));
859
fail:
860
    glUseProgramObjectARB(0);
861
    glDisable(GL_BLEND);
862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882
    if (glamor_prepare_access(dest->pDrawable, GLAMOR_ACCESS_RW)) {
	if (source->pDrawable == NULL ||
	    glamor_prepare_access(source->pDrawable, GLAMOR_ACCESS_RO))
	{
	    if (!mask || mask->pDrawable == NULL ||
		glamor_prepare_access(mask->pDrawable, GLAMOR_ACCESS_RO))
	    {
		fbComposite(op,
			    source, mask, dest,
			    x_source, y_source,
			    x_mask, y_mask,
			    x_dest, y_dest,
			    width, height);
		if (mask && mask->pDrawable != NULL)
		    glamor_finish_access(mask->pDrawable);
	    }
	    if (source->pDrawable != NULL)
		glamor_finish_access(source->pDrawable);
	}
	glamor_finish_access(dest->pDrawable);
    }
883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020
}


/**
 * Creates an appropriate picture to upload our alpha mask into (which
 * we calculated in system memory)
 */
static PicturePtr
glamor_create_mask_picture(ScreenPtr screen,
			   PicturePtr dst,
			   PictFormatPtr pict_format,
			   CARD16 width,
			   CARD16 height)
{
    PixmapPtr pixmap;
    PicturePtr picture;
    int	error;

    if (!pict_format) {
	if (dst->polyEdge == PolyEdgeSharp)
	    pict_format = PictureMatchFormat(screen, 1, PICT_a1);
	else
	    pict_format = PictureMatchFormat(screen, 8, PICT_a8);
	if (!pict_format)
	    return 0;
    }

    pixmap = screen->CreatePixmap(screen, width, height,
				  pict_format->depth,
				  0);
    if (!pixmap)
	return 0;
    picture = CreatePicture(0, &pixmap->drawable, pict_format,
			    0, 0, serverClient, &error);
    screen->DestroyPixmap(pixmap);
    return picture;
}

/**
 * glamor_trapezoids is a copy of miTrapezoids that does all the trapezoid
 * accumulation in system memory.
 */
void
glamor_trapezoids(CARD8 op,
		  PicturePtr src, PicturePtr dst,
		  PictFormatPtr mask_format, INT16 x_src, INT16 y_src,
		  int ntrap, xTrapezoid *traps)
{
    ScreenPtr screen = dst->pDrawable->pScreen;
    BoxRec bounds;
    PicturePtr picture;
    INT16 x_dst, y_dst;
    INT16 x_rel, y_rel;
    int width, height, stride;
    PixmapPtr pixmap;
    GCPtr gc;
    pixman_image_t *image;

    /* If a mask format wasn't provided, we get to choose, but behavior should
     * be as if there was no temporary mask the traps were accumulated into.
     */
    if (!mask_format) {
	if (dst->polyEdge == PolyEdgeSharp)
	    mask_format = PictureMatchFormat(screen, 1, PICT_a1);
	else
	    mask_format = PictureMatchFormat(screen, 8, PICT_a8);
	for (; ntrap; ntrap--, traps++)
	    glamor_trapezoids(op, src, dst, mask_format, x_src, y_src,
			      1, traps);
	return;
    }

    miTrapezoidBounds(ntrap, traps, &bounds);

    if (bounds.y1 >= bounds.y2 || bounds.x1 >= bounds.x2)
	return;

    x_dst = traps[0].left.p1.x >> 16;
    y_dst = traps[0].left.p1.y >> 16;

    width = bounds.x2 - bounds.x1;
    height = bounds.y2 - bounds.y1;
    stride = (width * BitsPerPixel(mask_format->depth) + 7) / 8;

    picture = glamor_create_mask_picture(screen, dst, mask_format,
					 width, height);
    if (!picture)
	return;

    image = pixman_image_create_bits(picture->format,
				     width, height,
				     NULL, stride);
    if (!image) {
	FreePicture(picture, 0);
	return;
    }

    for (; ntrap; ntrap--, traps++)
	pixman_rasterize_trapezoid(image, (pixman_trapezoid_t *) traps,
				   -bounds.x1, -bounds.y1);

    pixmap = GetScratchPixmapHeader(screen, width, height,
				    mask_format->depth,
				    BitsPerPixel(mask_format->depth),
				    PixmapBytePad(width, mask_format->depth),
				    pixman_image_get_data(image));
    if (!pixmap) {
	FreePicture(picture, 0);
	pixman_image_unref(image);
	return;
    }

    gc = GetScratchGC(picture->pDrawable->depth, screen);
    if (!gc) {
	FreeScratchPixmapHeader(pixmap);
	pixman_image_unref (image);
	FreePicture(picture, 0);
	return;
    }
    ValidateGC(picture->pDrawable, gc);

    gc->ops->CopyArea(&pixmap->drawable, picture->pDrawable,
		      gc, 0, 0, width, height, 0, 0);

    FreeScratchGC(gc);
    FreeScratchPixmapHeader(pixmap);
    pixman_image_unref(image);

    x_rel = bounds.x1 + x_src - x_dst;
    y_rel = bounds.y1 + y_src - y_dst;
    CompositePicture(op, src, picture, dst,
		     x_rel, y_rel,
		     0, 0,
		     bounds.x1, bounds.y1,
		     bounds.x2 - bounds.x1, bounds.y2 - bounds.y1);
    FreePicture(picture, 0);
}

1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047
void
glamor_composite_rects(CARD8 op,
		       PicturePtr src, PicturePtr dst,
		       int nrect, glamor_composite_rect_t *rects)
{
    int n;
    glamor_composite_rect_t *r;

    ValidatePicture(src);
    ValidatePicture(dst);

    n = nrect;
    r = rects;

    while (n--) {
	CompositePicture(op,
			 src,
			 NULL,
			 dst,
			 r->x_src, r->y_src,
			 0, 0,
			 r->x_dst, r->y_dst,
			 r->width, r->height);
	r++;
    }
}

1048
#endif /* RENDER */