glamor_render.c 33.7 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
    enum shader_in in;
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 72
};

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)
{
73 74 75 76 77 78
    const char *source_solid_fetch =
	"uniform vec4 source;\n"
	"vec4 get_source()\n"
	"{\n"
	"	return source;\n"
	"}\n";
79
    const char *source_alpha_pixmap_fetch =
80 81 82 83 84
	"uniform sampler2D source_sampler;\n"
	"vec4 get_source()\n"
	"{\n"
	"	return texture2D(source_sampler, gl_TexCoord[0].xy);\n"
	"}\n";
85
    const char *source_pixmap_fetch =
86 87 88 89 90 91 92 93 94 95 96 97
	"uniform sampler2D source_sampler;\n"
	"vec4 get_source()\n"
	"{\n"
	"	return vec4(texture2D(source_sampler, gl_TexCoord[0].xy).rgb,\n"
	"		    1.0);\n"
	"}\n";
    const char *mask_solid_fetch =
	"uniform vec4 mask;\n"
	"vec4 get_mask()\n"
	"{\n"
	"	return mask;\n"
	"}\n";
98
    const char *mask_alpha_pixmap_fetch =
99 100 101 102 103
	"uniform sampler2D mask_sampler;\n"
	"vec4 get_mask()\n"
	"{\n"
	"	return texture2D(mask_sampler, gl_TexCoord[1].xy);\n"
	"}\n";
104
    const char *mask_pixmap_fetch =
105 106 107 108 109 110 111 112 113 114 115 116 117 118 119
	"uniform sampler2D mask_sampler;\n"
	"vec4 get_mask()\n"
	"{\n"
	"	return vec4(texture2D(mask_sampler, gl_TexCoord[1].xy).rgb, \n"
	"		    1.0);\n"
	"}\n";
    const char *in_source_only =
	"void main()\n"
	"{\n"
	"	gl_FragColor = get_source();\n"
	"}\n";
    const char *in_normal =
	"void main()\n"
	"{\n"
	"	gl_FragColor = get_source() * get_mask().a;\n"
120
	"}\n";
121 122 123 124 125 126 127 128 129 130
    const char *in_ca_source =
	"void main()\n"
	"{\n"
	"	gl_FragColor = get_source() * get_mask();\n"
	"}\n";
    const char *in_ca_alpha =
	"void main()\n"
	"{\n"
	"	gl_FragColor = get_source().a * get_mask();\n"
	"}\n";
131
    char *source;
132
    const char *source_fetch;
133
    const char *mask_fetch = "";
134
    const char *in;
135 136
    GLuint prog;

137 138
    switch (key->source) {
    case SHADER_SOURCE_SOLID:
139
	source_fetch = source_solid_fetch;
140 141 142 143
	break;
    case SHADER_SOURCE_TEXTURE_ALPHA:
	source_fetch = source_alpha_pixmap_fetch;
	break;
144 145 146
    case SHADER_SOURCE_TEXTURE:
	source_fetch = source_pixmap_fetch;
	break;
147
    default:
148
	FatalError("Bad composite shader source");
149
    }
150 151 152 153 154

    switch (key->mask) {
    case SHADER_MASK_NONE:
	break;
    case SHADER_MASK_SOLID:
155
	mask_fetch = mask_solid_fetch;
156 157 158 159
	break;
    case SHADER_MASK_TEXTURE_ALPHA:
	mask_fetch = mask_alpha_pixmap_fetch;
	break;
160 161 162
    case SHADER_MASK_TEXTURE:
	mask_fetch = mask_pixmap_fetch;
	break;
163 164 165 166
    default:
	FatalError("Bad composite shader mask");
    }

167 168 169 170 171 172 173
    switch (key->in) {
    case SHADER_IN_SOURCE_ONLY:
	in = in_source_only;
	break;
    case SHADER_IN_NORMAL:
	in = in_normal;
	break;
174 175 176 177 178 179
    case SHADER_IN_CA_SOURCE:
	in = in_ca_source;
	break;
    case SHADER_IN_CA_ALPHA:
	in = in_ca_alpha;
	break;
180 181
    default:
	FatalError("Bad composite IN type");
182
    }
183

184 185 186 187 188 189
    XNFasprintf(&source,
		"%s%s%s",
		source_fetch,
		mask_fetch,
		in);
 
190 191

    prog = glamor_compile_glsl_prog(GL_FRAGMENT_SHADER_ARB, source);
192
    free(source);
193 194 195 196 197 198 199 200 201 202

    return prog;
}

static GLuint
glamor_create_composite_vs(struct shader_key *key)
{
    const char *main_opening =
	"void main()\n"
	"{\n"
203 204
	"	gl_Position = gl_Vertex;\n";
    const char *source_coords =
205
	"	gl_TexCoord[0] = gl_MultiTexCoord0;\n";
206
    const char *mask_coords =
207
	"	gl_TexCoord[1] = gl_MultiTexCoord1;\n";
208 209
    const char *main_closing =
	"}\n";
210 211
    const char *source_coords_setup = "";
    const char *mask_coords_setup = "";
212 213 214
    char *source;
    GLuint prog;

215 216 217 218 219 220
    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;

221 222 223 224 225 226
    XNFasprintf(&source,
		"%s%s%s%s",
		 main_opening,
		 source_coords_setup,
		 mask_coords_setup,
		 main_closing);
227 228

    prog = glamor_compile_glsl_prog(GL_VERTEX_SHADER_ARB, source);
229
    free(source);
230 231 232 233 234

    return prog;
}

static void
235 236
glamor_create_composite_shader(ScreenPtr screen, struct shader_key *key,
			       glamor_composite_shader *shader)
237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255
{
    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);
256

257
    if (key->source == SHADER_SOURCE_SOLID) {
258 259 260 261 262 263 264
	shader->source_uniform_location = glGetUniformLocationARB(prog,
								  "source");
    } else {
	source_sampler_uniform_location = glGetUniformLocationARB(prog,
								  "source_sampler");
	glUniform1i(source_sampler_uniform_location, 0);
    }
265

266 267
    if (key->mask != SHADER_MASK_NONE) {
	if (key->mask == SHADER_MASK_SOLID) {
268 269 270 271 272 273 274
	    shader->mask_uniform_location = glGetUniformLocationARB(prog,
								    "mask");
	} else {
	    mask_sampler_uniform_location = glGetUniformLocationARB(prog,
								    "mask_sampler");
	    glUniform1i(mask_sampler_uniform_location, 1);
	}
275 276 277
    }
}

278 279
static glamor_composite_shader *
glamor_lookup_composite_shader(ScreenPtr screen, struct shader_key *key)
280
{
281 282
    glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
    glamor_composite_shader *shader;
283

284
    shader = &glamor_priv->composite_shader[key->source][key->mask][key->in];
285 286
    if (shader->prog == 0)
	glamor_create_composite_shader(screen, key, shader);
287

288 289 290 291 292 293
    return shader;
}

void
glamor_init_composite_shaders(ScreenPtr screen)
{
294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345
}

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,
346
			     glamor_pixmap_private *pixmap_priv)
347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381
{
    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);
382 383 384 385 386 387 388 389 390 391 392 393 394 395
}

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);
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
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;
}

424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444
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);
}

445
static Bool
446 447 448 449 450 451 452 453 454
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)
455 456 457
{
    RegionRec region;

458 459 460
    if (!source->pDrawable)
	return FALSE;

461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490
    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;
}

491 492 493 494
static Bool
good_source_format(PicturePtr picture)
{
    switch (picture->format) {
495
    case PICT_a1:
496 497 498
    case PICT_a8:
    case PICT_a8r8g8b8:
	return TRUE;
499 500 501 502 503 504 505 506
    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);
507 508 509 510 511 512 513 514 515 516
    default:
	glamor_fallback("Bad source format 0x%08x\n", picture->format);
	return FALSE;
    }
}

static Bool
good_mask_format(PicturePtr picture)
{
    switch (picture->format) {
517
    case PICT_a1:
518 519 520
    case PICT_a8:
    case PICT_a8r8g8b8:
	return TRUE;
521 522 523 524 525 526 527 528
    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);
529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548
    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;
    }
}

549 550 551 552 553 554 555 556 557 558 559 560 561
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;
562 563
    ScreenPtr screen = picture->pDrawable->pScreen;
    glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
564 565 566 567 568 569 570 571 572 573 574 575 576 577

    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);
578 579 580 581
    if (glamor_priv->yInverted)
      texcoord[1] = t_from_x_coord_y_inverted(pixmap, ty);
    else
      texcoord[1] = t_from_x_coord_y(pixmap, ty);
582 583
}

584 585 586 587 588 589 590 591 592 593 594 595 596
static void
glamor_setup_composite_vbo(ScreenPtr screen)
{
    glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);

    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);

    glBindBufferARB(GL_ARRAY_BUFFER_ARB, glamor_priv->vbo);
    glVertexPointer(2, GL_FLOAT, glamor_priv->vb_stride,
597
		    (void *)((long)glamor_priv->vbo_offset));
598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691
    glEnableClientState(GL_VERTEX_ARRAY);

    if (glamor_priv->has_source_coords) {
	glClientActiveTexture(GL_TEXTURE0);
	glTexCoordPointer(2, GL_FLOAT, glamor_priv->vb_stride,
			  (void *)(glamor_priv->vbo_offset + 2 * sizeof(float)));
	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
    }

    if (glamor_priv->has_mask_coords) {
	glClientActiveTexture(GL_TEXTURE1);
	glTexCoordPointer(2, GL_FLOAT, glamor_priv->vb_stride,
			  (void *)(glamor_priv->vbo_offset +
				   (glamor_priv->has_source_coords ? 4 : 2) *
				   sizeof(float)));
	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
    }
}

static void
glamor_emit_composite_vert(ScreenPtr screen,
			   const float *src_coords,
			   const float *mask_coords,
			   const float *dst_coords,
			   int i)
{
    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;
}

static void
glamor_flush_composite_rects(ScreenPtr screen)
{
    glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);

    if (!glamor_priv->render_nr_verts)
	return;

    glUnmapBufferARB(GL_ARRAY_BUFFER_ARB);
    glamor_priv->vb = NULL;

    glDrawArrays(GL_QUADS, 0, glamor_priv->render_nr_verts);
    glamor_priv->render_nr_verts = 0;
    glamor_priv->vbo_size = 0;
}

static void
glamor_emit_composite_rect(ScreenPtr screen,
			   const float *src_coords,
			   const float *mask_coords,
			   const float *dst_coords)
{
    glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);

    if (glamor_priv->vbo_offset + 4 * glamor_priv->vb_stride >
	glamor_priv->vbo_size)
    {
	glamor_flush_composite_rects(screen);
    }

    if (glamor_priv->vbo_size == 0) {
	if (glamor_priv->vbo == 0)
	    glGenBuffersARB(1, &glamor_priv->vbo);
	glBindBufferARB(GL_ARRAY_BUFFER_ARB, glamor_priv->vbo);

	glamor_priv->vbo_size = 4096;
	glBufferDataARB(GL_ARRAY_BUFFER_ARB, glamor_priv->vbo_size, NULL,
			GL_STREAM_DRAW_ARB);
	glamor_priv->vbo_offset = 0;
	glamor_priv->vb = glMapBufferARB(GL_ARRAY_BUFFER_ARB, GL_WRITE_ONLY_ARB);
	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, 3);
}

692 693 694 695 696
static Bool
glamor_composite_with_shader(CARD8 op,
			     PicturePtr source,
			     PicturePtr mask,
			     PicturePtr dest,
697 698
			     int nrect,
			     glamor_composite_rect_t *rects)
699 700
{
    ScreenPtr screen = dest->pDrawable->pScreen;
701
    glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
702
    PixmapPtr dest_pixmap = glamor_get_drawable_pixmap(dest->pDrawable);
703
    PixmapPtr source_pixmap = NULL, mask_pixmap = NULL;
704 705
    glamor_pixmap_private *source_pixmap_priv = NULL;
    glamor_pixmap_private *mask_pixmap_priv = NULL;
706 707 708
    struct shader_key key;
    glamor_composite_shader *shader;
    RegionRec region;
709
    float vertices[8], source_texcoords[8], mask_texcoords[8];
710
    int i;
711
    BoxPtr box;
712 713 714
    int dest_x_off, dest_y_off;
    int source_x_off, source_y_off;
    int mask_x_off, mask_y_off;
715

716
    memset(&key, 0, sizeof(key));
717
    if (!source->pDrawable) {
718
	if (source->pSourcePict->type == SourcePictTypeSolidFill) {
719
	    key.source = SHADER_SOURCE_SOLID;
720
	} else {
721
	    glamor_fallback("gradient source\n");
722 723
	    goto fail;
	}
724
    } else {
725 726 727 728 729
	if (PICT_FORMAT_A(source->format) != 0) {
	    key.source = SHADER_SOURCE_TEXTURE_ALPHA;
	} else {
	    key.source = SHADER_SOURCE_TEXTURE;
	}
730
    }
731 732 733 734 735 736 737 738
    if (mask) {
	if (!mask->pDrawable) {
	    if (mask->pSourcePict->type == SourcePictTypeSolidFill) {
		key.mask = SHADER_MASK_SOLID;
	    } else {
		glamor_fallback("gradient mask\n");
		goto fail;
	    }
739
	} else {
740 741 742 743 744
	    if (PICT_FORMAT_A(mask->format) != 0) {
		key.mask = SHADER_MASK_TEXTURE_ALPHA;
	    } else {
		key.mask = SHADER_MASK_TEXTURE;
	    }
745
	}
746

747 748 749 750 751 752
	if (!mask->componentAlpha) {
	    key.in = SHADER_IN_NORMAL;
	} else {
	    /* We only handle two CA modes. */
	    if (op == PictOpAdd)
		key.in = SHADER_IN_CA_SOURCE;
753
	    else if (op == PictOpOutReverse) {
754
		key.in = SHADER_IN_CA_ALPHA;
755 756 757
	    } else {
		glamor_fallback("Unsupported component alpha op: %d\n", op);
		goto fail;
758 759
	    }
	}
760 761
    } else {
	key.mask = SHADER_MASK_NONE;
762
	key.in = SHADER_IN_SOURCE_ONLY;
763
    }
764

765
    if (source->alphaMap) {
766
	glamor_fallback("source alphaMap\n");
767 768 769
	goto fail;
    }
    if (mask && mask->alphaMap) {
770
	glamor_fallback("mask alphaMap\n");
771 772 773
	goto fail;
    }

774 775
    if (key.source == SHADER_SOURCE_TEXTURE ||
	key.source == SHADER_SOURCE_TEXTURE_ALPHA) {
776 777 778
	source_pixmap = glamor_get_drawable_pixmap(source->pDrawable);
	source_pixmap_priv = glamor_get_pixmap_private(source_pixmap);
	if (source_pixmap == dest_pixmap) {
779
	    glamor_fallback("glamor_composite(): source == dest\n");
780 781 782
	    goto fail;
	}
	if (!source_pixmap_priv || source_pixmap_priv->tex == 0) {
783
	    glamor_fallback("glamor_composite(): no texture in source\n");
784 785
	    goto fail;
	}
786 787
	if (!good_source_format(source))
	    goto fail;
788
    }
789 790
    if (key.mask == SHADER_MASK_TEXTURE ||
	key.mask == SHADER_MASK_TEXTURE_ALPHA) {
791 792 793
	mask_pixmap = glamor_get_drawable_pixmap(mask->pDrawable);
	mask_pixmap_priv = glamor_get_pixmap_private(mask_pixmap);
	if (mask_pixmap == dest_pixmap) {
794
	    glamor_fallback("glamor_composite(): mask == dest\n");
795 796 797
	    goto fail;
	}
	if (!mask_pixmap_priv || mask_pixmap_priv->tex == 0) {
798
	    glamor_fallback("glamor_composite(): no texture in mask\n");
799 800
	    goto fail;
	}
801 802
	if (!good_mask_format(mask))
	    goto fail;
803
    }
804 805
    if (!good_dest_format(dest))
	goto fail;
806 807 808

    shader = glamor_lookup_composite_shader(screen, &key);
    if (shader->prog == 0) {
809 810
	glamor_fallback("glamor_composite(): "
			"no shader program for this render acccel mode\n");
811 812 813 814 815 816 817 818 819 820 821 822
	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;
    }

823
    if (key.source == SHADER_SOURCE_SOLID) {
824 825
	glamor_set_composite_solid(source, shader->source_uniform_location);
    } else {
826
	glamor_set_composite_texture(screen, 0, source, source_pixmap_priv);
827
    }
828 829
    if (key.mask != SHADER_MASK_NONE) {
	if (key.mask == SHADER_MASK_SOLID) {
830 831
	    glamor_set_composite_solid(mask, shader->mask_uniform_location);
	} else {
832
	    glamor_set_composite_texture(screen, 1, mask, mask_pixmap_priv);
833 834
	}
    }
835

836 837 838
    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);
839

840
    glamor_get_drawable_deltas(dest->pDrawable, dest_pixmap,
841
			       &dest_x_off, &dest_y_off);
842
    if (source_pixmap) {
843 844
	glamor_get_drawable_deltas(source->pDrawable, source_pixmap,
				   &source_x_off, &source_y_off);
845 846
    }
    if (mask_pixmap) {
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
	glamor_get_drawable_deltas(mask->pDrawable, mask_pixmap,
				   &mask_x_off, &mask_y_off);
    }

    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;
875
	}
876 877 878
	if (mask && mask->pDrawable) {
	    x_mask += mask->pDrawable->x;
	    y_mask += mask->pDrawable->y;
879
	}
880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895

	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++) {
896 897 898 899 900 901 902 903
	    vertices[0] = v_from_x_coord_x(dest_pixmap,
					   box[i].x1 + dest_x_off);
	    vertices[2] = v_from_x_coord_x(dest_pixmap,
					   box[i].x2 + dest_x_off);
	    vertices[4] = v_from_x_coord_x(dest_pixmap,
					   box[i].x2 + dest_x_off);
	    vertices[6] = v_from_x_coord_x(dest_pixmap,
					   box[i].x1 + dest_x_off);
904 905 906 907 908 909 910 911 912

	  if (glamor_priv->yInverted) {
	    vertices[1] = v_from_x_coord_y_inverted(dest_pixmap,
					   box[i].y1 + dest_y_off);
	    vertices[3] = v_from_x_coord_y_inverted(dest_pixmap,
					   box[i].y1 + dest_y_off);
	    vertices[5] = v_from_x_coord_y_inverted(dest_pixmap,
					   box[i].y2 + dest_y_off);
	    vertices[7] = v_from_x_coord_y_inverted(dest_pixmap,
913
					   box[i].y2 + dest_y_off);
914

915 916 917 918 919 920 921 922 923 924
	    } else {
	    vertices[1] = v_from_x_coord_y(dest_pixmap,
					   box[i].y1 + dest_y_off);
	    vertices[3] = v_from_x_coord_y(dest_pixmap,
					   box[i].y1 + dest_y_off);
	    vertices[5] = v_from_x_coord_y(dest_pixmap,
					   box[i].y2 + dest_y_off);
	    vertices[7] = v_from_x_coord_y(dest_pixmap,
					   box[i].y2 + dest_y_off);
	   }
925 926 927 928 929 930 931
	    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;

		glamor_set_transformed_point(source, source_pixmap,
932
					     source_texcoords + 0, tx1, ty1);
933
		glamor_set_transformed_point(source, source_pixmap,
934
					     source_texcoords + 2, tx2, ty1);
935
		glamor_set_transformed_point(source, source_pixmap,
936
					     source_texcoords + 4, tx2, ty2);
937
		glamor_set_transformed_point(source, source_pixmap,
938
					     source_texcoords + 6, tx1, ty2);
939 940 941 942 943 944 945 946 947
	    }

	    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;

		glamor_set_transformed_point(mask, mask_pixmap,
948
					     mask_texcoords + 0, tx1, ty1);
949
		glamor_set_transformed_point(mask, mask_pixmap,
950
					     mask_texcoords + 2, tx2, ty1);
951
		glamor_set_transformed_point(mask, mask_pixmap,
952
					     mask_texcoords + 4, tx2, ty2);
953
		glamor_set_transformed_point(mask, mask_pixmap,
954
					     mask_texcoords + 6, tx1, ty2);
955
	    }
956 957
#if 0
 else memset(mask_texcoords, 0, sizeof(mask_texcoords));
958 959 960 961 962 963 964 965
	    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]);
	    }
966 967
#endif

968 969
	    glamor_emit_composite_rect(screen, source_texcoords,
				       mask_texcoords, vertices);
970 971
	}
	rects++;
972 973
    }

974 975 976
    glamor_flush_composite_rects(screen);

    glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
977 978 979 980 981 982 983
    glClientActiveTexture(GL_TEXTURE0);
    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
    glClientActiveTexture(GL_TEXTURE1);
    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
    glDisableClientState(GL_VERTEX_ARRAY);

    REGION_UNINIT(dst->pDrawable->pScreen, &region);
984
    glDisable(GL_BLEND);
985 986 987 988
    glActiveTexture(GL_TEXTURE0);
    glDisable(GL_TEXTURE_2D);
    glActiveTexture(GL_TEXTURE1);
    glDisable(GL_TEXTURE_2D);
989
    glUseProgramObjectARB(0);
990
    return TRUE;
991 992

fail:
993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011
    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)
{
1012 1013
    glamor_composite_rect_t rect;

1014 1015 1016
    /* Do two-pass PictOpOver componentAlpha, until we enable
     * dual source color blending.
     */
1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035
    if (mask && mask->componentAlpha) {
	if (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;
	} else if (op != PictOpAdd && op != PictOpOutReverse) {
	    glamor_fallback("glamor_composite(): component alpha\n");
	    goto fail;
	}
1036 1037 1038 1039 1040 1041 1042 1043 1044 1045
    }

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

1046 1047 1048 1049 1050 1051 1052 1053 1054
    rect.x_src = x_source;
    rect.y_src = y_source;
    rect.x_mask = x_mask;
    rect.y_mask = y_mask;
    rect.x_dst = x_dest;
    rect.y_dst = y_dest;
    rect.width = width;
    rect.height = height;
    if (glamor_composite_with_shader(op, source, mask, dest, 1, &rect))
1055 1056
	return;

1057
fail:
1058
    glamor_fallback("glamor_composite(): "
1059 1060 1061 1062 1063 1064
		    "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));
1065

1066
    glUseProgramObjectARB(0);
1067
    glDisable(GL_BLEND);
1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088
    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);
    }
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 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 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 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226
}


/**
 * 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);
}

1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237
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);

1238 1239 1240
    if (glamor_composite_with_shader(op, src, NULL, dst, nrect, rects))
	return;

1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256
    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++;
    }
}

1257
#endif /* RENDER */