glamor_render.c 41.2 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
//#include "glu3/glu3.h"
40 41

struct shader_key {
Zhigang Gong's avatar
Zhigang Gong committed
42 43 44
	enum shader_source source;
	enum shader_mask mask;
	enum shader_in in;
45 46 47
};

struct blendinfo {
Zhigang Gong's avatar
Zhigang Gong committed
48 49 50 51
	Bool dest_alpha;
	Bool source_alpha;
	GLenum source_blend;
	GLenum dest_blend;
52 53 54
};

static struct blendinfo composite_op_info[] = {
Zhigang Gong's avatar
Zhigang Gong committed
55 56 57 58 59 60 61 62 63 64 65 66 67 68
	[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},
69 70 71
};

static GLuint
Zhigang Gong's avatar
Zhigang Gong committed
72 73
glamor_create_composite_fs(glamor_gl_dispatch * dispatch,
			   struct shader_key *key)
74
{
Zhigang Gong's avatar
Zhigang Gong committed
75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176
	const char *source_solid_fetch =
	    GLAMOR_DEFAULT_PRECISION
	    "uniform vec4 source;\n"
	    "vec4 get_source()\n" "{\n" "	return source;\n" "}\n";
	const char *source_alpha_pixmap_fetch =
	    GLAMOR_DEFAULT_PRECISION
	    "varying vec2 source_texture;\n"
	    "uniform sampler2D source_sampler;\n"
	    "vec4 get_source()\n"
	    "{\n" "	return texture2D(source_sampler, source_texture);\n"
	    "}\n";
	const char *source_pixmap_fetch =
	    GLAMOR_DEFAULT_PRECISION "varying vec2 source_texture;\n"
	    "uniform sampler2D source_sampler;\n" "vec4 get_source()\n"
	    "{\n"
	    "       return vec4(texture2D(source_sampler, source_texture).rgb, 1);\n"
	    "}\n";
	const char *mask_solid_fetch =
	    GLAMOR_DEFAULT_PRECISION "uniform vec4 mask;\n"
	    "vec4 get_mask()\n" "{\n" "	return mask;\n" "}\n";
	const char *mask_alpha_pixmap_fetch =
	    GLAMOR_DEFAULT_PRECISION "varying vec2 mask_texture;\n"
	    "uniform sampler2D mask_sampler;\n" "vec4 get_mask()\n" "{\n"
	    "	return texture2D(mask_sampler, mask_texture);\n" "}\n";
	const char *mask_pixmap_fetch =
	    GLAMOR_DEFAULT_PRECISION "varying vec2 mask_texture;\n"
	    "uniform sampler2D mask_sampler;\n" "vec4 get_mask()\n" "{\n"
	    "       return vec4(texture2D(mask_sampler, mask_texture).rgb, 1);\n"
	    "}\n";
	const char *in_source_only =
	    GLAMOR_DEFAULT_PRECISION "void main()\n" "{\n"
	    "	gl_FragColor = get_source();\n" "}\n";
	const char *in_normal =
	    GLAMOR_DEFAULT_PRECISION "void main()\n" "{\n"
	    "	gl_FragColor = get_source() * get_mask().a;\n" "}\n";
	const char *in_ca_source =
	    GLAMOR_DEFAULT_PRECISION "void main()\n" "{\n"
	    "	gl_FragColor = get_source() * get_mask();\n" "}\n";
	const char *in_ca_alpha =
	    GLAMOR_DEFAULT_PRECISION "void main()\n" "{\n"
	    "	gl_FragColor = get_source().a * get_mask();\n" "}\n";
	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", source_fetch, mask_fetch, in);


	prog = glamor_compile_glsl_prog(dispatch, GL_FRAGMENT_SHADER,
					source);
	free(source);

	return prog;
177 178 179
}

static GLuint
Zhigang Gong's avatar
Zhigang Gong committed
180 181
glamor_create_composite_vs(glamor_gl_dispatch * dispatch,
			   struct shader_key *key)
182
{
Zhigang Gong's avatar
Zhigang Gong committed
183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215
	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"
	    "void main()\n" "{\n" "	gl_Position = v_position;\n";
	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);

	prog =
	    glamor_compile_glsl_prog(dispatch, GL_VERTEX_SHADER, source);
	free(source);

	return prog;
216 217 218
}

static void
219
glamor_create_composite_shader(ScreenPtr screen, struct shader_key *key,
Zhigang Gong's avatar
Zhigang Gong committed
220
			       glamor_composite_shader * shader)
221
{
Zhigang Gong's avatar
Zhigang Gong committed
222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272
	GLuint vs, fs, prog;
	GLint source_sampler_uniform_location,
	    mask_sampler_uniform_location;
	glamor_screen_private *glamor = glamor_get_screen_private(screen);
	glamor_gl_dispatch *dispatch = &glamor->dispatch;

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

	prog = dispatch->glCreateProgram();
	dispatch->glAttachShader(prog, vs);
	dispatch->glAttachShader(prog, fs);

	dispatch->glBindAttribLocation(prog, GLAMOR_VERTEX_POS,
				       "v_position");
	dispatch->glBindAttribLocation(prog, GLAMOR_VERTEX_SOURCE,
				       "v_texcoord0");
	dispatch->glBindAttribLocation(prog, GLAMOR_VERTEX_MASK,
				       "v_texcoord1");

	glamor_link_glsl_prog(dispatch, prog);

	shader->prog = prog;

	dispatch->glUseProgram(prog);

	if (key->source == SHADER_SOURCE_SOLID) {
		shader->source_uniform_location =
		    dispatch->glGetUniformLocation(prog, "source");
	} else {
		source_sampler_uniform_location =
		    dispatch->glGetUniformLocation(prog, "source_sampler");
		dispatch->glUniform1i(source_sampler_uniform_location, 0);
	}

	if (key->mask != SHADER_MASK_NONE) {
		if (key->mask == SHADER_MASK_SOLID) {
			shader->mask_uniform_location =
			    dispatch->glGetUniformLocation(prog, "mask");
		} else {
			mask_sampler_uniform_location =
			    dispatch->glGetUniformLocation(prog,
							   "mask_sampler");
			dispatch->glUniform1i
			    (mask_sampler_uniform_location, 1);
		}
	}
273 274
}

275
static glamor_composite_shader *
Zhigang Gong's avatar
Zhigang Gong committed
276 277 278
glamor_lookup_composite_shader(ScreenPtr screen, struct
			       shader_key
			       *key)
279
{
Zhigang Gong's avatar
Zhigang Gong committed
280 281 282
	glamor_screen_private *glamor_priv =
	    glamor_get_screen_private(screen);
	glamor_composite_shader *shader;
283

Zhigang Gong's avatar
Zhigang Gong committed
284 285 286 287 288
	shader =
	    &glamor_priv->composite_shader[key->source][key->
							mask][key->in];
	if (shader->prog == 0)
		glamor_create_composite_shader(screen, key, shader);
289

Zhigang Gong's avatar
Zhigang Gong committed
290
	return shader;
291
}
Zhigang Gong's avatar
Zhigang Gong committed
292

293 294 295 296 297
#define GLAMOR_COMPOSITE_VBO_SIZE 8192

static void
glamor_reset_composite_vbo(ScreenPtr screen)
{
Zhigang Gong's avatar
Zhigang Gong committed
298 299 300 301 302
	glamor_screen_private *glamor_priv =
	    glamor_get_screen_private(screen);
	glamor_priv->vbo_offset = 0;
	glamor_priv->vbo_size = GLAMOR_COMPOSITE_VBO_SIZE;
	glamor_priv->render_nr_verts = 0;
303 304
}

305 306 307 308

void
glamor_init_composite_shaders(ScreenPtr screen)
{
Zhigang Gong's avatar
Zhigang Gong committed
309 310 311 312 313
	glamor_screen_private *glamor_priv =
	    glamor_get_screen_private(screen);
	glamor_priv->vb = malloc(GLAMOR_COMPOSITE_VBO_SIZE);
	assert(glamor_priv->vb != NULL);
	glamor_reset_composite_vbo(screen);
314 315 316 317 318 319
}

static Bool
glamor_set_composite_op(ScreenPtr screen,
			CARD8 op, PicturePtr dest, PicturePtr mask)
{
Zhigang Gong's avatar
Zhigang Gong committed
320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366
	GLenum source_blend, dest_blend;
	struct blendinfo *op_info;
	glamor_screen_private *glamor_priv =
	    glamor_get_screen_private(screen);
	glamor_gl_dispatch *dispatch = &glamor_priv->dispatch;

	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 (source_blend != GL_ZERO) {
			glamor_fallback
			    ("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) {
		dispatch->glDisable(GL_BLEND);
	} else {
		dispatch->glEnable(GL_BLEND);
		dispatch->glBlendFunc(source_blend, dest_blend);
	}
	return TRUE;
367 368 369
}

static void
Zhigang Gong's avatar
Zhigang Gong committed
370 371 372
glamor_set_composite_texture(ScreenPtr screen, int unit,
			     PicturePtr picture,
			     glamor_pixmap_private * pixmap_priv)
373
{
Zhigang Gong's avatar
Zhigang Gong committed
374 375 376 377 378 379 380
	glamor_screen_private *glamor_priv =
	    glamor_get_screen_private(screen);
	glamor_gl_dispatch *dispatch = &glamor_priv->dispatch;
	dispatch->glActiveTexture(GL_TEXTURE0 + unit);
	dispatch->glBindTexture(GL_TEXTURE_2D, pixmap_priv->tex);
	switch (picture->repeatType) {
	case RepeatNone:
381
#ifndef GLAMOR_GLES2
Zhigang Gong's avatar
Zhigang Gong committed
382 383 384 385 386
		/* XXX  GLES2 doesn't support GL_CLAMP_TO_BORDER. */
		dispatch->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
					  GL_CLAMP_TO_BORDER);
		dispatch->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
					  GL_CLAMP_TO_BORDER);
387
#endif
Zhigang Gong's avatar
Zhigang Gong committed
388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427
		break;
	case RepeatNormal:
		dispatch->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
					  GL_REPEAT);
		dispatch->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
					  GL_REPEAT);
		break;
	case RepeatPad:
		dispatch->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
					  GL_CLAMP_TO_EDGE);
		dispatch->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
					  GL_CLAMP_TO_EDGE);
		break;
	case RepeatReflect:
		dispatch->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
					  GL_MIRRORED_REPEAT);
		dispatch->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
					  GL_MIRRORED_REPEAT);
		break;
	}

	switch (picture->filter) {
	case PictFilterNearest:
		dispatch->glTexParameteri(GL_TEXTURE_2D,
					  GL_TEXTURE_MIN_FILTER,
					  GL_NEAREST);
		dispatch->glTexParameteri(GL_TEXTURE_2D,
					  GL_TEXTURE_MAG_FILTER,
					  GL_NEAREST);
		break;
	case PictFilterBilinear:
	default:
		dispatch->glTexParameteri(GL_TEXTURE_2D,
					  GL_TEXTURE_MIN_FILTER,
					  GL_LINEAR);
		dispatch->glTexParameteri(GL_TEXTURE_2D,
					  GL_TEXTURE_MAG_FILTER,
					  GL_LINEAR);
		break;
	}
428
#ifndef GLAMOR_GLES2
Zhigang Gong's avatar
Zhigang Gong committed
429
	dispatch->glEnable(GL_TEXTURE_2D);
430
#endif
431 432 433
}

static void
Zhigang Gong's avatar
Zhigang Gong committed
434 435
glamor_set_composite_solid(glamor_gl_dispatch * dispatch, float *color,
			   GLint uniform_location)
436
{
Zhigang Gong's avatar
Zhigang Gong committed
437
	dispatch->glUniform4fv(uniform_location, 1, color);
438 439
}

440
static int
Zhigang Gong's avatar
Zhigang Gong committed
441
compatible_formats(CARD8 op, PicturePtr dst, PicturePtr src)
442
{
Zhigang Gong's avatar
Zhigang Gong committed
443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466
	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;
467 468
}

469 470 471
static char
glamor_get_picture_location(PicturePtr picture)
{
Zhigang Gong's avatar
Zhigang Gong committed
472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487
	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);
488 489
}

490
static Bool
491 492 493 494 495 496
glamor_composite_with_copy(CARD8 op,
			   PicturePtr source,
			   PicturePtr dest,
			   INT16 x_source,
			   INT16 y_source,
			   INT16 x_dest,
Zhigang Gong's avatar
Zhigang Gong committed
497
			   INT16 y_dest, CARD16 width, CARD16 height)
498
{
Zhigang Gong's avatar
Zhigang Gong committed
499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528
	RegionRec region;

	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 (!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;
529 530
}

531 532 533
static void
glamor_setup_composite_vbo(ScreenPtr screen)
{
Zhigang Gong's avatar
Zhigang Gong committed
534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575
	glamor_screen_private *glamor_priv =
	    glamor_get_screen_private(screen);
	glamor_gl_dispatch *dispatch = &glamor_priv->dispatch;

	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);

	dispatch->glBindBuffer(GL_ARRAY_BUFFER, glamor_priv->vbo);

	dispatch->glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_FLOAT,
					GL_FALSE, glamor_priv->vb_stride,
					(void *) ((long)
						  glamor_priv->vbo_offset));
	dispatch->glEnableVertexAttribArray(GLAMOR_VERTEX_POS);

	if (glamor_priv->has_source_coords) {
		dispatch->glVertexAttribPointer(GLAMOR_VERTEX_SOURCE, 2,
						GL_FLOAT, GL_FALSE,
						glamor_priv->vb_stride,
						(void *) ((long)
							  glamor_priv->vbo_offset
							  +
							  2 *
							  sizeof(float)));
		dispatch->glEnableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
	}

	if (glamor_priv->has_mask_coords) {
		dispatch->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)));
		dispatch->glEnableVertexAttribArray(GLAMOR_VERTEX_MASK);
	}
576 577 578 579 580 581
}

static void
glamor_emit_composite_vert(ScreenPtr screen,
			   const float *src_coords,
			   const float *mask_coords,
Zhigang Gong's avatar
Zhigang Gong committed
582
			   const float *dst_coords, int i)
583
{
Zhigang Gong's avatar
Zhigang Gong committed
584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601
	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;
602 603 604 605 606
}

static void
glamor_flush_composite_rects(ScreenPtr screen)
{
Zhigang Gong's avatar
Zhigang Gong committed
607 608 609 610 611 612 613 614 615 616 617
	glamor_screen_private *glamor_priv =
	    glamor_get_screen_private(screen);
	glamor_gl_dispatch *dispatch = &glamor_priv->dispatch;
	if (!glamor_priv->render_nr_verts)
		return;
	dispatch->glBufferData(GL_ARRAY_BUFFER, glamor_priv->vbo_offset,
			       glamor_priv->vb, GL_STREAM_DRAW);

	dispatch->glDrawArrays(GL_TRIANGLES, 0,
			       glamor_priv->render_nr_verts);
	glamor_reset_composite_vbo(screen);
618 619 620 621 622 623 624 625
}

static void
glamor_emit_composite_rect(ScreenPtr screen,
			   const float *src_coords,
			   const float *mask_coords,
			   const float *dst_coords)
{
Zhigang Gong's avatar
Zhigang Gong committed
626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653
	glamor_screen_private *glamor_priv =
	    glamor_get_screen_private(screen);
	glamor_gl_dispatch *dispatch = &glamor_priv->dispatch;

	if (glamor_priv->vbo_offset + 6 * glamor_priv->vb_stride >
	    glamor_priv->vbo_size) {
		glamor_flush_composite_rects(screen);
	}

	if (glamor_priv->vbo_offset == 0) {
		if (glamor_priv->vbo == 0)
			dispatch->glGenBuffers(1, &glamor_priv->vbo);

		glamor_setup_composite_vbo(screen);
	}

	glamor_emit_composite_vert(screen, src_coords, mask_coords,
				   dst_coords, 0);
	glamor_emit_composite_vert(screen, src_coords, mask_coords,
				   dst_coords, 1);
	glamor_emit_composite_vert(screen, src_coords, mask_coords,
				   dst_coords, 2);
	glamor_emit_composite_vert(screen, src_coords, mask_coords,
				   dst_coords, 0);
	glamor_emit_composite_vert(screen, src_coords, mask_coords,
				   dst_coords, 2);
	glamor_emit_composite_vert(screen, src_coords, mask_coords,
				   dst_coords, 3);
654 655 656
}


Zhigang Gong's avatar
Zhigang Gong committed
657 658 659 660
int pict_format_combine_tab[][3] = {
	{PICT_TYPE_ARGB, PICT_TYPE_A, PICT_TYPE_ARGB},
	{PICT_TYPE_ABGR, PICT_TYPE_A, PICT_TYPE_ABGR},
};
661

Zhigang Gong's avatar
Zhigang Gong committed
662 663 664
static Bool
combine_pict_format(PictFormatShort * des, const PictFormatShort src,
		    const PictFormatShort mask, enum shader_in in_ca)
665
{
Zhigang Gong's avatar
Zhigang Gong committed
666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719
	PictFormatShort new_vis;
	int src_type, mask_type, src_bpp, mask_bpp;
	int i;
	if (src == mask) {
		*des = src;
		return TRUE;
	}
	src_bpp = PICT_FORMAT_BPP(src);
	mask_bpp = PICT_FORMAT_BPP(mask);

	assert(src_bpp == mask_bpp);

	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;
720 721
}

722 723 724 725 726
static Bool
glamor_composite_with_shader(CARD8 op,
			     PicturePtr source,
			     PicturePtr mask,
			     PicturePtr dest,
Zhigang Gong's avatar
Zhigang Gong committed
727
			     int nrect, glamor_composite_rect_t * rects)
728
{
Zhigang Gong's avatar
Zhigang Gong committed
729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843
	ScreenPtr screen = dest->pDrawable->pScreen;
	glamor_screen_private *glamor_priv =
	    glamor_get_screen_private(screen);
	glamor_gl_dispatch *dispatch = &glamor_priv->dispatch;
	PixmapPtr dest_pixmap =
	    glamor_get_drawable_pixmap(dest->pDrawable);
	PixmapPtr source_pixmap = NULL, mask_pixmap = NULL;
	glamor_pixmap_private *source_pixmap_priv = NULL;
	glamor_pixmap_private *mask_pixmap_priv = NULL;
	glamor_pixmap_private *dest_pixmap_priv = NULL;
	GLfloat dst_xscale, dst_yscale;
	GLfloat mask_xscale = 1, mask_yscale = 1, src_xscale =
	    1, src_yscale = 1;
	struct shader_key key;
	glamor_composite_shader *shader;
	RegionRec region;
	float vertices[8], source_texcoords[8], mask_texcoords[8];
	int i;
	BoxPtr box;
	int dest_x_off, dest_y_off;
	int source_x_off, source_y_off;
	int mask_x_off, mask_y_off;
	enum glamor_pixmap_status source_status = GLAMOR_NONE;
	enum glamor_pixmap_status mask_status = GLAMOR_NONE;
	PictFormatShort saved_source_format = 0;
	float src_matrix[9], mask_matrix[9];
	GLfloat source_solid_color[4], mask_solid_color[4];

	dest_pixmap_priv = glamor_get_pixmap_private(dest_pixmap);

	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->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 {
			glamor_fallback("gradient source\n");
			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 {
				glamor_fallback("gradient mask\n");
				goto fail;
			}
		} else {
			key.mask = SHADER_MASK_TEXTURE_ALPHA;
		}

		if (!mask->componentAlpha) {
			key.in = SHADER_IN_NORMAL;
		} else {
			/* We only handle two CA modes. */
			if (op == PictOpAdd)
				key.in = SHADER_IN_CA_SOURCE;
			else if (op == PictOpOutReverse) {
				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->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 =
		    glamor_get_drawable_pixmap(source->pDrawable);
		source_pixmap_priv =
		    glamor_get_pixmap_private(source_pixmap);
		if (source_pixmap == dest_pixmap) {
			glamor_fallback("source == dest\n");
			goto fail;
		}
		if (!source_pixmap_priv || source_pixmap_priv->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*/
844
#ifdef GLAMOR_PIXMAP_DYNAMIC_UPLOAD
Zhigang Gong's avatar
Zhigang Gong committed
845
			source_status = GLAMOR_UPLOAD_PENDING;
846
#else
Zhigang Gong's avatar
Zhigang Gong committed
847 848
			glamor_fallback("no texture in source\n");
			goto fail;
849
#endif
Zhigang Gong's avatar
Zhigang Gong committed
850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866
		} else if (source_pixmap_priv->pending_op.type ==
			   GLAMOR_PENDING_FILL) {
			key.source = SHADER_SOURCE_SOLID;
			memcpy(source_solid_color,
			       source_pixmap_priv->pending_op.
			       fill.color4fv, 4 * sizeof(float));
		}
	}
	if (key.mask == SHADER_MASK_TEXTURE ||
	    key.mask == SHADER_MASK_TEXTURE_ALPHA) {
		mask_pixmap = glamor_get_drawable_pixmap(mask->pDrawable);
		mask_pixmap_priv = glamor_get_pixmap_private(mask_pixmap);
		if (mask_pixmap == dest_pixmap) {
			glamor_fallback("mask == dest\n");
			goto fail;
		}
		if (!mask_pixmap_priv || mask_pixmap_priv->gl_fbo == 0) {
867
#ifdef GLAMOR_PIXMAP_DYNAMIC_UPLOAD
Zhigang Gong's avatar
Zhigang Gong committed
868
			mask_status = GLAMOR_UPLOAD_PENDING;
869
#else
Zhigang Gong's avatar
Zhigang Gong committed
870 871
			glamor_fallback("no texture in mask\n");
			goto fail;
872
#endif
Zhigang Gong's avatar
Zhigang Gong committed
873 874 875 876 877 878 879 880
		} else if (mask_pixmap_priv->pending_op.type ==
			   GLAMOR_PENDING_FILL) {
			key.mask = SHADER_MASK_SOLID;
			memcpy(mask_solid_color,
			       mask_pixmap_priv->pending_op.fill.color4fv,
			       4 * sizeof(float));
		}
	}
881
#ifdef GLAMOR_PIXMAP_DYNAMIC_UPLOAD
Zhigang Gong's avatar
Zhigang Gong committed
882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956
	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;
			}
		}
	}
957
#endif
Zhigang Gong's avatar
Zhigang Gong committed
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 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 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 1128 1129 1130
	glamor_set_destination_pixmap_priv_nc(dest_pixmap_priv);
	glamor_validate_pixmap(dest_pixmap);
	if (!glamor_set_composite_op(screen, op, dest, mask)) {
		goto fail;
	}

	shader = glamor_lookup_composite_shader(screen, &key);
	if (shader->prog == 0) {
		glamor_fallback
		    ("no shader program for this render acccel mode\n");
		goto fail;
	}

	dispatch->glUseProgram(shader->prog);


	if (key.source == SHADER_SOURCE_SOLID) {
		glamor_set_composite_solid(dispatch, source_solid_color,
					   shader->source_uniform_location);
	} else {
		glamor_set_composite_texture(screen, 0, source,
					     source_pixmap_priv);
	}
	if (key.mask != SHADER_MASK_NONE) {
		if (key.mask == SHADER_MASK_SOLID) {
			glamor_set_composite_solid(dispatch,
						   mask_solid_color,
						   shader->mask_uniform_location);
		} else {
			glamor_set_composite_texture(screen, 1, mask,
						     mask_pixmap_priv);
		}
	}

	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);

	glamor_get_drawable_deltas(dest->pDrawable, dest_pixmap,
				   &dest_x_off, &dest_y_off);
	pixmap_priv_get_scale(dest_pixmap_priv, &dst_xscale, &dst_yscale);



	if (glamor_priv->has_source_coords) {
		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);
		glamor_picture_get_matrixf(source, src_matrix);
	}

	if (glamor_priv->has_mask_coords) {
		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);
		glamor_picture_get_matrixf(mask, mask_matrix);
	}

	while (nrect--) {
		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;
		y_dest = rects->y_dst;
		x_source = rects->x_src;
		y_source = rects->y_src;
		x_mask = rects->x_mask;
		y_mask = rects->y_mask;
		width = rects->width;
		height = rects->height;

		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;
		}

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

		x_source += source_x_off;
		y_source += source_y_off;
		x_mask += mask_x_off;
		y_mask += mask_y_off;

		box = REGION_RECTS(&region);
		for (i = 0; i < REGION_NUM_RECTS(&region); i++) {
			int vx1 = box[i].x1 + dest_x_off;
			int vx2 = box[i].x2 + dest_x_off;
			int vy1 = box[i].y1 + dest_y_off;
			int vy2 = box[i].y2 + dest_y_off;
			glamor_set_normalize_vcoords(dst_xscale,
						     dst_yscale, vx1,
						     vy1, vx2, vy2,
						     glamor_priv->yInverted,
						     vertices);

			if (key.source != SHADER_SOURCE_SOLID) {
				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;
				if (source->transform)
					glamor_set_transformed_normalize_tcoords
					    (src_matrix, src_xscale,
					     src_yscale, tx1, ty1,
					     tx2, ty2,
					     glamor_priv->yInverted,
					     source_texcoords);
				else
					glamor_set_normalize_tcoords
					    (src_xscale, src_yscale,
					     tx1, ty1, tx2, ty2,
					     glamor_priv->yInverted,
					     source_texcoords);
			}

			if (key.mask != SHADER_MASK_NONE
			    && key.mask != SHADER_MASK_SOLID) {
				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;
				if (mask->transform)
					glamor_set_transformed_normalize_tcoords
					    (mask_matrix,
					     mask_xscale,
					     mask_yscale, tx1, ty1,
					     tx2, ty2,
					     glamor_priv->yInverted,
					     mask_texcoords);
				else
					glamor_set_normalize_tcoords
					    (mask_xscale,
					     mask_yscale, tx1, ty1,
					     tx2, ty2,
					     glamor_priv->yInverted,
					     mask_texcoords);
			}
			glamor_emit_composite_rect(screen,
						   source_texcoords,
						   mask_texcoords,
						   vertices);
		}
		rects++;
	}
	glamor_flush_composite_rects(screen);

	dispatch->glBindBuffer(GL_ARRAY_BUFFER, 0);
	dispatch->glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
	dispatch->glDisableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
	dispatch->glDisableVertexAttribArray(GLAMOR_VERTEX_MASK);
	REGION_UNINIT(dst->pDrawable->pScreen, &region);
	dispatch->glDisable(GL_BLEND);
1131
#ifndef GLAMOR_GLES2
Zhigang Gong's avatar
Zhigang Gong committed
1132 1133 1134 1135
	dispatch->glActiveTexture(GL_TEXTURE0);
	dispatch->glDisable(GL_TEXTURE_2D);
	dispatch->glActiveTexture(GL_TEXTURE1);
	dispatch->glDisable(GL_TEXTURE_2D);
1136
#endif
Zhigang Gong's avatar
Zhigang Gong committed
1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148
	dispatch->glUseProgram(0);
	if (saved_source_format)
		source->format = saved_source_format;
	return TRUE;

      fail:
	if (saved_source_format)
		source->format = saved_source_format;

	dispatch->glDisable(GL_BLEND);
	dispatch->glUseProgram(0);
	return FALSE;
1149 1150
}

1151 1152
static PicturePtr
glamor_convert_gradient_picture(ScreenPtr screen,
Zhigang Gong's avatar
Zhigang Gong committed
1153 1154 1155
				PicturePtr source,
				int x_source,
				int y_source, int width, int height)
1156
{
Zhigang Gong's avatar
Zhigang Gong committed
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 1182 1183 1184 1185 1186 1187 1188 1189 1190
	PixmapPtr pixmap;
	PicturePtr dst;
	int error;
	PictFormatShort format;

	if (!source->pDrawable)
		format = PICT_a8r8g8b8;
	else
		format = source->format;

	pixmap = screen->CreatePixmap(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);
	screen->DestroyPixmap(pixmap);
	if (!dst)
		return NULL;

	ValidatePicture(dst);

	fbComposite(PictOpSrc, source, NULL, dst, x_source, y_source,
		    0, 0, 0, 0, width, height);
	return dst;
1191 1192
}

1193 1194 1195 1196 1197 1198 1199 1200 1201
void
glamor_composite(CARD8 op,
		 PicturePtr source,
		 PicturePtr mask,
		 PicturePtr dest,
		 INT16 x_source,
		 INT16 y_source,
		 INT16 x_mask,
		 INT16 y_mask,
Zhigang Gong's avatar
Zhigang Gong committed
1202
		 INT16 x_dest, INT16 y_dest, CARD16 width, CARD16 height)
1203
{
Zhigang Gong's avatar
Zhigang Gong committed
1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 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 1286 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
	ScreenPtr screen = dest->pDrawable->pScreen;
	glamor_pixmap_private *dest_pixmap_priv;
	glamor_pixmap_private *source_pixmap_priv =
	    NULL, *mask_pixmap_priv = NULL;
	PixmapPtr dest_pixmap =
	    glamor_get_drawable_pixmap(dest->pDrawable);
	PixmapPtr source_pixmap = NULL, mask_pixmap = NULL;
	PicturePtr temp_src = source, temp_mask = mask;
	int x_temp_src, y_temp_src, x_temp_mask, y_temp_mask;
	glamor_composite_rect_t rect;
	glamor_screen_private *glamor_priv =
	    glamor_get_screen_private(screen);
	glamor_gl_dispatch *dispatch = &glamor_priv->dispatch;

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

	dest_pixmap_priv = glamor_get_pixmap_private(dest_pixmap);
	/* Currently. Always fallback to cpu if destination is in CPU memory. */
	if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(dest_pixmap_priv)) {
		goto fail;
	}

	if (source->pDrawable) {
		source_pixmap =
		    glamor_get_drawable_pixmap(source->pDrawable);
		source_pixmap_priv =
		    glamor_get_pixmap_private(source_pixmap);
	}

	if (mask && mask->pDrawable) {
		mask_pixmap = glamor_get_drawable_pixmap(mask->pDrawable);
		mask_pixmap_priv = glamor_get_pixmap_private(mask_pixmap);
	}

	if ((!source->pDrawable
	     && (source->pSourcePict->type != SourcePictTypeSolidFill))
	    || (source->pDrawable
		&& !GLAMOR_PIXMAP_PRIV_HAS_FBO(source_pixmap_priv)
		&&
		((width * height * 4 <
		  (source_pixmap->drawable.width *
		   source_pixmap->drawable.height))
		 ||
		 !(glamor_check_fbo_size
		   (glamor_priv, source_pixmap->drawable.width,
		    source_pixmap->drawable.height))))) {
		temp_src =
		    glamor_convert_gradient_picture(screen, source,
						    x_source, y_source,
						    width, height);
		if (!temp_src) {
			temp_src = source;
			goto fail;
		}
		x_temp_src = y_temp_src = 0;
	}

	if (mask
	    &&
	    ((!mask->pDrawable
	      && (mask->pSourcePict->type != SourcePictTypeSolidFill))
	     || (mask->pDrawable
		 && (!GLAMOR_PIXMAP_PRIV_HAS_FBO(mask_pixmap_priv))
		 &&
		 ((width * height * 4 <
		   (mask_pixmap->drawable.width *
		    mask_pixmap->drawable.height))
		  ||
		  !(glamor_check_fbo_size
		    (glamor_priv, mask_pixmap->drawable.width,
		     mask_pixmap->drawable.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,
						    x_mask, y_mask,
						    width, height);
		if (!temp_mask) {
			temp_mask = mask;
			goto fail;
		}
		x_temp_mask = y_temp_mask = 0;
	}
	/* Do two-pass PictOpOver componentAlpha, until we enable
	 * dual source color blending.
	 */

	if (mask && mask->componentAlpha) {
		if (op == PictOpOver) {
			glamor_composite(PictOpOutReverse,
					 temp_src, temp_mask, dest,
					 x_temp_src, y_temp_src,
					 x_temp_mask, y_temp_mask,
					 x_dest, y_dest, width, height);
			glamor_composite(PictOpAdd,
					 temp_src, temp_mask, dest,
					 x_temp_src, y_temp_src,
					 x_temp_mask, y_temp_mask,
					 x_dest, y_dest, width, height);
			goto done;

		} else if (op != PictOpAdd && op != PictOpOutReverse) {
			glamor_fallback
			    ("glamor_composite(): component alpha\n");
			goto fail;
		}
	}

	if (!mask) {
		if (glamor_composite_with_copy(op, temp_src, dest,
					       x_temp_src, y_temp_src,
					       x_dest, y_dest, width,
					       height))
			goto done;
	}

	rect.x_src = x_temp_src;
	rect.y_src = y_temp_src;
	rect.x_mask = x_temp_mask;
	rect.y_mask = y_temp_mask;
	rect.x_dst = x_dest;
	rect.y_dst = y_dest;
	rect.width = width;
	rect.height = height;
	if (glamor_composite_with_shader
	    (op, temp_src, temp_mask, dest, 1, &rect))
		goto done;

      fail:

	glamor_fallback
	    ("from picts %p:%p %dx%d / %p:%p %d x %d (%c,%c)  to pict %p:%p %dx%d (%c)\n",
	     source, source->pDrawable,
	     source->pDrawable ? source->pDrawable->width : 0,
	     source->pDrawable ? source->pDrawable->height : 0, mask,
	     (!mask) ? NULL : mask->pDrawable, (!mask
						|| !mask->pDrawable) ? 0 :
	     mask->pDrawable->width, (!mask
				      || !mask->
				      pDrawable) ? 0 : mask->pDrawable->
	     height, glamor_get_picture_location(source),
	     glamor_get_picture_location(mask), dest, dest->pDrawable,
	     dest->pDrawable->width, dest->pDrawable->height,
	     glamor_get_picture_location(dest));

	dispatch->glUseProgram(0);
	dispatch->glDisable(GL_BLEND);
	if (glamor_prepare_access_picture(dest, GLAMOR_ACCESS_RW)) {
		if (glamor_prepare_access_picture
		    (source, GLAMOR_ACCESS_RO)) {
			if (!mask
			    || glamor_prepare_access_picture(mask,
							     GLAMOR_ACCESS_RO))
			{
				fbComposite(op,
					    source, mask, dest,
					    x_source, y_source,
					    x_mask, y_mask, x_dest,
					    y_dest, width, height);
				if (mask)
					glamor_finish_access_picture(mask);
			}
			glamor_finish_access_picture(source);
		}
		glamor_finish_access_picture(dest);
	}
      done:
	if (temp_src != source)
		FreePicture(temp_src, 0);
	if (temp_mask != mask)
		FreePicture(temp_mask, 0);
1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388
}


/**
 * 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,
Zhigang Gong's avatar
Zhigang Gong committed
1389
			   CARD16 width, CARD16 height)
1390
{
Zhigang Gong's avatar
Zhigang Gong committed
1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414
	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, 0, 0,
				      pict_format->depth,
				      GLAMOR_CREATE_PIXMAP_CPU);
	if (!pixmap)
		return 0;
	picture = CreatePicture(0, &pixmap->drawable, pict_format,
				0, 0, serverClient, &error);
	screen->DestroyPixmap(pixmap);
	return picture;
1415 1416 1417 1418 1419 1420 1421 1422 1423 1424
}

/**
 * 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,
Zhigang Gong's avatar
Zhigang Gong committed
1425
		  int ntrap, xTrapezoid * traps)
1426
{
Zhigang Gong's avatar
Zhigang Gong committed
1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499
	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;
	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 = PixmapBytePad(width, mask_format->depth);
	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 = glamor_get_drawable_pixmap(picture->pDrawable);

	screen->ModifyPixmapHeader(pixmap, width, height,
				   mask_format->depth,
				   BitsPerPixel(mask_format->depth),
				   PixmapBytePad(width,
						 mask_format->depth),
				   pixman_image_get_data(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);

	pixman_image_unref(image);

	FreePicture(picture, 0);
1500 1501
}

1502 1503
void
glamor_composite_rects(CARD8 op,
1504
		       PicturePtr src, PicturePtr mask, PicturePtr dst,
Zhigang Gong's avatar
Zhigang Gong committed
1505
		       int nrect, glamor_composite_rect_t * rects)
1506
{
Zhigang Gong's avatar
Zhigang Gong committed
1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528
	int n;
	glamor_composite_rect_t *r;

	ValidatePicture(src);
	ValidatePicture(dst);

	if (glamor_composite_with_shader(op, src, mask, dst, nrect, rects))
		return;

	n = nrect;
	r = rects;

	while (n--) {
		CompositePicture(op,
				 src,
				 mask,
				 dst,
				 r->x_src, r->y_src,
				 r->x_mask, r->y_mask,
				 r->x_dst, r->y_dst, r->width, r->height);
		r++;
	}
1529 1530
}

Zhigang Gong's avatar
Zhigang Gong committed
1531
#endif				/* RENDER */