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glamor: Add support for accel of x8r8g8b8 source pictures.

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There's a limitation still for RepeatNone, but this fixes a bunch of
fallbacks for gnome-terminal.
This commit is contained in:
Eric Anholt 2010-02-09 22:35:04 -08:00 committed by Zhigang Gong
parent e6bf505736
commit 0565c1d789
2 changed files with 47 additions and 6 deletions
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2
glamor/glamor_priv.h
View File

@ -100,6 +100,7 @@ typedef struct {
enum shader_source {
SHADER_SOURCE_SOLID,
SHADER_SOURCE_TEXTURE,
SHADER_SOURCE_TEXTURE_ALPHA,
SHADER_SOURCE_COUNT,
};
@ -107,6 +108,7 @@ enum shader_source {
enum shader_mask {
SHADER_MASK_NONE,
SHADER_MASK_SOLID,
SHADER_MASK_TEXTURE,
SHADER_MASK_TEXTURE_ALPHA,
SHADER_MASK_COUNT,
};

51
glamor/glamor_render.c
View File

@ -82,8 +82,14 @@ glamor_create_composite_fs(struct shader_key *key)
"{\n";
const char *source_alpha_pixmap_fetch =
" vec4 source = texture2D(source_sampler, gl_TexCoord[0].xy);\n";
const char *source_pixmap_fetch =
" vec4 source = vec4(texture2D(source_sampler, "
" gl_TexCoord[0].xy).rgb, 1.0);\n";
const char *mask_alpha_pixmap_fetch =
" vec4 mask = texture2D(mask_sampler, gl_TexCoord[1].xy);\n";
const char *mask_pixmap_fetch =
" vec4 mask = vec4(texture2D(mask_sampler, "
" gl_TexCoord[1].xy).rgb, 1.0);\n";
const char *source_in_mask =
" gl_FragColor = source * mask.a;\n";
const char *source_only =
@ -106,9 +112,12 @@ glamor_create_composite_fs(struct shader_key *key)
source_setup = source_pixmap_header;
source_fetch = source_alpha_pixmap_fetch;
break;
FatalError("Bad composite shader source");
case SHADER_SOURCE_TEXTURE:
source_setup = source_pixmap_header;
source_fetch = source_pixmap_fetch;
break;
default:
FatalError("Bad composite source mask");
FatalError("Bad composite shader source");
}
switch (key->mask) {
@ -121,6 +130,10 @@ glamor_create_composite_fs(struct shader_key *key)
mask_setup = mask_pixmap_header;
mask_fetch = mask_alpha_pixmap_fetch;
break;
case SHADER_MASK_TEXTURE:
mask_setup = mask_pixmap_header;
mask_fetch = mask_pixmap_fetch;
break;
default:
FatalError("Bad composite shader mask");
}
@ -446,6 +459,14 @@ good_source_format(PicturePtr picture)
case PICT_a8:
case PICT_a8r8g8b8:
return TRUE;
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);
default:
glamor_fallback("Bad source format 0x%08x\n", picture->format);
return FALSE;
@ -459,6 +480,14 @@ good_mask_format(PicturePtr picture)
case PICT_a8:
case PICT_a8r8g8b8:
return TRUE;
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);
default:
glamor_fallback("Bad mask format 0x%08x\n", picture->format);
return FALSE;
@ -514,7 +543,11 @@ glamor_composite_with_shader(CARD8 op,
goto fail;
}
} else {
key.source = SHADER_SOURCE_TEXTURE_ALPHA;
if (PICT_FORMAT_A(source->format) != 0) {
key.source = SHADER_SOURCE_TEXTURE_ALPHA;
} else {
key.source = SHADER_SOURCE_TEXTURE;
}
}
if (mask) {
if (!mask->pDrawable) {
@ -525,7 +558,11 @@ glamor_composite_with_shader(CARD8 op,
goto fail;
}
} else {
key.mask = SHADER_MASK_TEXTURE_ALPHA;
if (PICT_FORMAT_A(mask->format) != 0) {
key.mask = SHADER_MASK_TEXTURE_ALPHA;
} else {
key.mask = SHADER_MASK_TEXTURE;
}
}
} else {
key.mask = SHADER_MASK_NONE;
@ -539,7 +576,8 @@ glamor_composite_with_shader(CARD8 op,
goto fail;
}
if (key.source == SHADER_SOURCE_TEXTURE_ALPHA) {
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) {
@ -553,7 +591,8 @@ glamor_composite_with_shader(CARD8 op,
if (!good_source_format(source))
goto fail;
}
if (key.mask == SHADER_MASK_TEXTURE_ALPHA) {
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) {