glamor_render.c 39.8 KB
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/*
 * 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"
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#include "fbpict.h"
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#include "glu3/glu3.h"

struct shader_key {
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  enum shader_source source;
  enum shader_mask mask;
  enum shader_in in;
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};

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

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

static GLuint
glamor_create_composite_fs(struct shader_key *key)
{
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  const char *source_solid_fetch =
    "uniform vec4 source;\n"
    "vec4 get_source()\n"
    "{\n"
    "	return source;\n"
    "}\n";
  const char *source_alpha_pixmap_fetch =
    "uniform sampler2D source_sampler;\n"
    "vec4 get_source()\n"
    "{\n"
    "	return texture2D(source_sampler, gl_TexCoord[0].xy);\n"
    "}\n";
  const char *source_pixmap_fetch =
    "uniform sampler2D source_sampler;\n"
    "vec4 get_source()\n"
    "{\n"
    "       return vec4(texture2D(source_sampler, gl_TexCoord[0].xy).rgb, 1);\n"
    "}\n";
  const char *mask_solid_fetch =
    "uniform vec4 mask;\n"
    "vec4 get_mask()\n"
    "{\n"
    "	return mask;\n"
    "}\n";
  const char *mask_alpha_pixmap_fetch =
    "uniform sampler2D mask_sampler;\n"
    "vec4 get_mask()\n"
    "{\n"
    "	return texture2D(mask_sampler, gl_TexCoord[1].xy);\n"
    "}\n";
  const char *mask_pixmap_fetch =
    "uniform sampler2D mask_sampler;\n"
    "vec4 get_mask()\n"
    "{\n"
    "       return vec4(texture2D(mask_sampler, gl_TexCoord[1].xy).rgb, 1);\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"
    "}\n";
  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";
  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);
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  prog = glamor_compile_glsl_prog(GL_FRAGMENT_SHADER_ARB, source);
  free(source);
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  return prog;
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}

static GLuint
glamor_create_composite_vs(struct shader_key *key)
{
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  const char *main_opening =
    "void main()\n"
    "{\n"
    "	gl_Position = gl_Vertex;\n";
  const char *source_coords =
    "	gl_TexCoord[0] = gl_MultiTexCoord0;\n";
  const char *mask_coords =
    "	gl_TexCoord[1] = gl_MultiTexCoord1;\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(GL_VERTEX_SHADER_ARB, source);
  free(source);

  return prog;
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}

static void
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glamor_create_composite_shader(ScreenPtr screen, struct shader_key *key,
			       glamor_composite_shader *shader)
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{
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  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);

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

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

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static glamor_composite_shader *
glamor_lookup_composite_shader(ScreenPtr screen, struct shader_key *key)
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{
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  glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
  glamor_composite_shader *shader;
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  shader = &glamor_priv->composite_shader[key->source][key->mask][key->in];
  if (shader->prog == 0)
    glamor_create_composite_shader(screen, key, shader);
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  return shader;
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}
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#define GLAMOR_COMPOSITE_VBO_SIZE 8192

static void
glamor_reset_composite_vbo(ScreenPtr screen)
{
  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;
}

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void
glamor_init_composite_shaders(ScreenPtr screen)
{
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  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);
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}

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

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

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

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

  /* Set up the source alpha value for blending in component alpha mode. */
  if (mask && mask->componentAlpha && PICT_FORMAT_RGB(mask->format) != 0 &&
      op_info->source_alpha) {
    if (source_blend != GL_ZERO) {
      glamor_fallback("Dual-source composite blending not supported\n");
      return GL_FALSE;
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    }
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    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;
  }
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  if (source_blend == GL_ONE && dest_blend == GL_ZERO) {
    glDisable(GL_BLEND);
  } else {
    glEnable(GL_BLEND);
    glBlendFunc(source_blend, dest_blend);
  }
  return TRUE;
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}

static void
glamor_set_composite_texture(ScreenPtr screen, int unit, PicturePtr picture,
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			     glamor_pixmap_private *pixmap_priv)
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{
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  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);
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}

static void
glamor_set_composite_solid(PicturePtr picture, GLint uniform_location)
{
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  CARD32 c = picture->pSourcePict->solidFill.color; /* a8r8g8b8 */
  float color[4]; /* rgba */
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  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;
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  glUniform4fvARB(uniform_location, 1, color);
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}

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static int
compatible_formats (CARD8 op, PicturePtr dst, PicturePtr src)
{
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  if (op == PictOpSrc) {
    if (src->format == dst->format)
      return 1;
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    if (src->format == PICT_a8r8g8b8 && dst->format == PICT_x8r8g8b8)
      return 1;
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    if (src->format == PICT_a8b8g8r8 && dst->format == PICT_x8b8g8r8)
      return 1;
  } else if (op == PictOpOver) {
    if (src->alphaMap || dst->alphaMap)
      return 0;
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    if (src->format != dst->format)
      return 0;
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    if (src->format == PICT_x8r8g8b8 || src->format == PICT_x8b8g8r8)
      return 1;
  }
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  return 0;
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}

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static char
glamor_get_picture_location(PicturePtr picture)
{
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  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 '?';
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    }
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  }
  return glamor_get_drawable_location(picture->pDrawable);
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}

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static Bool
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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)
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{
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  RegionRec region;
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  if (!source->pDrawable)
    return FALSE;
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  if (!compatible_formats(op, dest, source))
    return FALSE;
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  if (source->repeat || source->transform)
    return FALSE;
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  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))
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    return TRUE;
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  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;
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}

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static Bool
good_source_format(PicturePtr picture)
{
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  switch (picture->format) {
  case PICT_a1:
  case PICT_a8:
  case PICT_a8r8g8b8:
  case PICT_x8r8g8b8:
    return TRUE;
  default:
    return TRUE;
    glamor_fallback("Bad source format 0x%08x\n", picture->format);
    return FALSE;
  }
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}

static Bool
good_mask_format(PicturePtr picture)
{
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  switch (picture->format) {
  case PICT_a1:
  case PICT_a8:
  case PICT_a8r8g8b8:
  case PICT_x8r8g8b8:
    return TRUE;
  default:
    return TRUE;
    glamor_fallback("Bad mask format 0x%08x\n", picture->format);
    return FALSE;
  }
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}

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

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static void
glamor_setup_composite_vbo(ScreenPtr screen)
{
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  glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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  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);
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  glBindBufferARB(GL_ARRAY_BUFFER_ARB, glamor_priv->vbo);
  glVertexPointer(2, GL_FLOAT, glamor_priv->vb_stride,
		  (void *)((long)glamor_priv->vbo_offset));
  glEnableClientState(GL_VERTEX_ARRAY);
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  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);
  }
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}

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

static void
glamor_flush_composite_rects(ScreenPtr screen)
{
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  glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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  if (!glamor_priv->render_nr_verts)
    return;
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  glBufferDataARB(GL_ARRAY_BUFFER_ARB, glamor_priv->vbo_offset, glamor_priv->vb,
	    GL_STREAM_DRAW_ARB);
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  glDrawArrays(GL_QUADS, 0, glamor_priv->render_nr_verts);
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  glamor_reset_composite_vbo(screen);
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}

static void
glamor_emit_composite_rect(ScreenPtr screen,
			   const float *src_coords,
			   const float *mask_coords,
			   const float *dst_coords)
{
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  glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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  if (glamor_priv->vbo_offset + 4 * glamor_priv->vb_stride >
      glamor_priv->vbo_size)
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    {
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      glamor_flush_composite_rects(screen);
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    }

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  if (glamor_priv->vbo_offset == 0) {
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    if (glamor_priv->vbo == 0)
      glGenBuffersARB(1, &glamor_priv->vbo);
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642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713
    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);
}


int pict_format_combine_tab[][3] = 
  {
    {PICT_TYPE_ARGB, PICT_TYPE_A, PICT_TYPE_ARGB},
    {PICT_TYPE_ABGR, PICT_TYPE_A, PICT_TYPE_ABGR},
  };

static Bool 
combine_pict_format(PictFormatShort *des, const PictFormatShort src, 
                    const PictFormatShort mask, enum shader_in in_ca)
{
  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;
714 715
}

716 717 718 719 720
static Bool
glamor_composite_with_shader(CARD8 op,
			     PicturePtr source,
			     PicturePtr mask,
			     PicturePtr dest,
721 722
			     int nrect,
			     glamor_composite_rect_t *rects)
723
{
724 725 726 727 728 729 730
  ScreenPtr screen = dest->pDrawable->pScreen;
  glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
  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;
731 732
  GLfloat dst_xscale, dst_yscale;
  GLfloat mask_xscale = 1, mask_yscale = 1, src_xscale = 1, src_yscale = 1;
733 734 735 736 737 738 739 740 741 742 743
  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;
744
  PictFormatShort saved_source_format = 0; 
745 746
  float src_matrix[9], mask_matrix[9];

747 748 749 750 751 752 753 754 755 756
  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;
757
    } else {
758 759
      glamor_fallback("gradient source\n");
      goto fail;
760
    }
761 762 763 764 765 766 767 768 769 770 771
  } else {
    key.source = SHADER_SOURCE_TEXTURE_ALPHA;
  }
  if (mask) {
    if (!mask->pDrawable) {
      if (mask->pSourcePict->type == SourcePictTypeSolidFill) {
	key.mask = SHADER_MASK_SOLID;
      } else {
	glamor_fallback("gradient mask\n");
	goto fail;
      }
772
    } else {
773
      key.mask = SHADER_MASK_TEXTURE_ALPHA;
774
    }
775

776 777 778 779 780 781 782 783 784 785
    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);
786
	goto fail;
787
      }
788
    }
789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808
  } 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;
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
    if (!source_pixmap_priv || source_pixmap_priv->gl_tex == 0) {
#ifdef GLAMOR_PIXMAP_DYNAMIC_UPLOAD
      source_status = GLAMOR_UPLOAD_PENDING;
#else
      glamor_fallback("no texture in source\n");
      goto fail;
#endif
    }
    if ((source_status != GLAMOR_UPLOAD_PENDING) 
	&& !good_source_format(source)) {
      goto fail;
    }
  }
  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_tex == 0) {
#ifdef GLAMOR_PIXMAP_DYNAMIC_UPLOAD
      mask_status = GLAMOR_UPLOAD_PENDING;
#else
      glamor_fallback("no texture in mask\n");
      goto fail;
#endif
838
    }
839 840 841
    if ((mask_status != GLAMOR_UPLOAD_PENDING) 
	&& !good_mask_format(mask)) {
      goto fail;
842
    }
843 844 845 846 847 848 849 850 851 852 853
  }
  if (!good_dest_format(dest)) {
    goto fail;
  }
#ifdef GLAMOR_PIXMAP_DYNAMIC_UPLOAD
  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;
854

855 856 857
      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);
858
	goto fail;
859
      }
860

861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886
      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;
887
    }
888 889 890 891 892 893 894 895
    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 {
896

897 898 899 900
    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");
901
	goto fail;
902 903
      }
    }
904

905 906 907 908
    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");
909
	goto fail;
910
      }
911
    }
912 913
  }
#endif
914 915 916
  if (!glamor_set_composite_op(screen, op, dest, mask)) {
    goto fail;
  }
917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933
  glamor_set_destination_pixmap_priv_nc(dest_pixmap_priv);

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

  glUseProgramObjectARB(shader->prog);
  if (key.source == SHADER_SOURCE_SOLID) {
    glamor_set_composite_solid(source, 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(mask, shader->mask_uniform_location);
934
    } else {
935
      glamor_set_composite_texture(screen, 1, mask, mask_pixmap_priv);
936
    }
937 938 939 940 941 942 943 944
  }

  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);
945 946 947 948
  pixmap_priv_get_scale(dest_pixmap_priv, &dst_xscale, &dst_yscale);



949 950 951
  if (source_pixmap) {
    glamor_get_drawable_deltas(source->pDrawable, source_pixmap,
			       &source_x_off, &source_y_off);
952 953
    pixmap_priv_get_scale(source_pixmap_priv, &src_xscale, &src_yscale);
    glamor_picture_get_matrixf(source, src_matrix);
954
  }
955

956 957 958
  if (mask_pixmap) {
    glamor_get_drawable_deltas(mask->pDrawable, mask_pixmap,
			       &mask_x_off, &mask_y_off);
959 960
    pixmap_priv_get_scale(mask_pixmap_priv, &mask_xscale, &mask_yscale);
    glamor_picture_get_matrixf(mask, mask_matrix);
961
  }
962

963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980
  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;
981

982 983 984 985 986
    x_dest += dest->pDrawable->x;
    y_dest += dest->pDrawable->y;
    if (source->pDrawable) {
      x_source += source->pDrawable->x;
      y_source += source->pDrawable->y;
987
    }
988 989 990
    if (mask && mask->pDrawable) {
      x_mask += mask->pDrawable->x;
      y_mask += mask->pDrawable->y;
991 992
    }

993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007
    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++) {
1008 1009 1010 1011 1012 1013
      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);
1014 1015 1016 1017 1018 1019

      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;
1020 1021 1022 1023 1024 1025 1026 1027 1028
	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);
      }   
1029 1030 1031 1032 1033 1034

      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;
1035 1036 1037 1038 1039 1040 1041 1042
	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);
1043 1044 1045
      }
      glamor_emit_composite_rect(screen, source_texcoords,
				 mask_texcoords, vertices);
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
    rects++;
  }
  glamor_flush_composite_rects(screen);

  glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
  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);
  glDisable(GL_BLEND);
  glActiveTexture(GL_TEXTURE0);
  glDisable(GL_TEXTURE_2D);
  glActiveTexture(GL_TEXTURE1);
  glDisable(GL_TEXTURE_2D);
  glUseProgramObjectARB(0);
  if (saved_source_format) 
    source->format = saved_source_format;
  return TRUE;

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

  glDisable(GL_BLEND);
  glUseProgramObjectARB(0);
  return FALSE;
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
static PicturePtr
glamor_convert_gradient_picture(ScreenPtr screen,
                                PicturePtr source,
                                int x_source,
                                int y_source,
                                int width,
                                int height)
{
  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;
}

1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138
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)
{
1139
  ScreenPtr screen = dest->pDrawable->pScreen;
1140 1141
  glamor_pixmap_private *dest_pixmap_priv;
  glamor_pixmap_private *source_pixmap_priv = NULL, *mask_pixmap_priv = NULL;
1142
  PixmapPtr dest_pixmap = glamor_get_drawable_pixmap(dest->pDrawable);
1143
  PixmapPtr source_pixmap = NULL, mask_pixmap = NULL;
1144 1145
  PicturePtr temp_src = source, temp_mask = mask;
  int x_temp_src, y_temp_src, x_temp_mask, y_temp_mask;
1146 1147
  glamor_composite_rect_t rect;

1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171
  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) 
1172 1173 1174 1175
	  && ((width * height * 4 
	       < (source_pixmap->drawable.width * source_pixmap->drawable.height))
	      || !(glamor_check_fbo_width_height(source_pixmap->drawable.width,
						 source_pixmap->drawable.height))))) {
1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187
    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))
1188 1189 1190 1191
	      && ((width * height * 4 
		   < (mask_pixmap->drawable.width * mask_pixmap->drawable.height))
		  || !(glamor_check_fbo_width_height(mask_pixmap->drawable.width,
						     mask_pixmap->drawable.height)))))) {
1192 1193 1194 1195 1196 1197 1198 1199 1200
    /* 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;
  }
1201 1202 1203
  /* Do two-pass PictOpOver componentAlpha, until we enable
   * dual source color blending.
   */
1204

1205 1206 1207
  if (mask && mask->componentAlpha) {
    if (op == PictOpOver) {
      glamor_composite(PictOpOutReverse,
1208 1209 1210
		       temp_src, temp_mask, dest,
		       x_temp_src, y_temp_src,
		       x_temp_mask, y_temp_mask,
1211 1212 1213
		       x_dest, y_dest,
		       width, height);
      glamor_composite(PictOpAdd,
1214 1215 1216
		       temp_src, temp_mask, dest,
		       x_temp_src, y_temp_src,
		       x_temp_mask, y_temp_mask,
1217 1218
		       x_dest, y_dest,
		       width, height);
1219 1220
      goto done;

1221 1222 1223
    } else if (op != PictOpAdd && op != PictOpOutReverse) {
      glamor_fallback("glamor_composite(): component alpha\n");
      goto fail;
1224
    }
1225 1226 1227
  }

  if (!mask) {
1228 1229
    if (glamor_composite_with_copy(op, temp_src, dest,
				   x_temp_src, y_temp_src,
1230 1231
				   x_dest, y_dest,
				   width, height))
1232
      goto done;
1233 1234
  }

1235 1236 1237 1238
  rect.x_src = x_temp_src;
  rect.y_src = y_temp_src;
  rect.x_mask = x_temp_mask;
  rect.y_mask = y_temp_mask;
1239 1240 1241 1242
  rect.x_dst = x_dest;
  rect.y_dst = y_dest;
  rect.width = width;
  rect.height = height;
1243 1244
  if (glamor_composite_with_shader(op, temp_src, temp_mask, dest, 1, &rect))
    goto done;
1245

1246
fail:
1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257

  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,
1258 1259 1260
		  glamor_get_picture_location(source),
		  glamor_get_picture_location(mask),
		  dest,
1261 1262 1263
		  dest->pDrawable,
		  dest->pDrawable->width,
		  dest->pDrawable->height,
1264 1265 1266 1267
		  glamor_get_picture_location(dest));

  glUseProgramObjectARB(0);
  glDisable(GL_BLEND);
1268
  if (glamor_prepare_access_picture(dest, GLAMOR_ACCESS_RW)) {
1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286
    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);
  }
1287 1288 1289 1290 1291
done:
    if (temp_src != source)
      FreePicture(temp_src, 0);
    if (temp_mask != mask)
      FreePicture(temp_mask, 0);
1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305
}


/**
 * 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)
{
1306 1307 1308
  PixmapPtr pixmap;
  PicturePtr picture;
  int	error;
1309

1310 1311 1312 1313 1314 1315 1316 1317 1318
  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;
  }

1319
  pixmap = screen->CreatePixmap(screen, 0, 0,
1320 1321 1322 1323 1324 1325 1326 1327
				pict_format->depth,
				0);
  if (!pixmap)
    return 0;
  picture = CreatePicture(0, &pixmap->drawable, pict_format,
			  0, 0, serverClient, &error);
  screen->DestroyPixmap(pixmap);
  return picture;
1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339
}

/**
 * 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)
{
1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361
  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;
  }
1362

1363
  miTrapezoidBounds(ntrap, traps, &bounds);
1364

1365 1366
  if (bounds.y1 >= bounds.y2 || bounds.x1 >= bounds.x2)
    return;
1367

1368 1369
  x_dst = traps[0].left.p1.x >> 16;
  y_dst = traps[0].left.p1.y >> 16;
1370

1371 1372
  width = bounds.x2 - bounds.x1;
  height = bounds.y2 - bounds.y1;
1373
  stride = PixmapBytePad(width, mask_format->depth);
1374 1375 1376 1377
  picture = glamor_create_mask_picture(screen, dst, mask_format,
				       width, height);
  if (!picture)
    return;
1378

1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390
  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);

1391 1392 1393 1394 1395 1396 1397
  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));
1398 1399 1400 1401 1402 1403 1404 1405

  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);
1406 1407 1408

  pixman_image_unref(image);

1409
  FreePicture(picture, 0);
1410 1411
}

1412 1413 1414 1415 1416
void
glamor_composite_rects(CARD8 op,
		       PicturePtr src, PicturePtr dst,
		       int nrect, glamor_composite_rect_t *rects)
{
1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439
  int n;
  glamor_composite_rect_t *r;

  ValidatePicture(src);
  ValidatePicture(dst);

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

  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++;
  }
1440 1441
}

1442
#endif /* RENDER */