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glamor: Add support for component alpha rendering.

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Brings x11perf -rgb24text from 230/sec to 18400/sec
This commit is contained in:
Eric Anholt 2010-02-18 14:02:48 -08:00 committed by Zhigang Gong
parent d07fc66a05
commit 858ce0c192
2 changed files with 49 additions and 17 deletions
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2
glamor/glamor_priv.h
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@ -116,6 +116,8 @@ enum shader_mask {
enum shader_in { enum shader_in {
SHADER_IN_SOURCE_ONLY, SHADER_IN_SOURCE_ONLY,
SHADER_IN_NORMAL, SHADER_IN_NORMAL,
SHADER_IN_CA_SOURCE,
SHADER_IN_CA_ALPHA,
SHADER_IN_COUNT, SHADER_IN_COUNT,
}; };

64
glamor/glamor_render.c
View File

@ -118,6 +118,16 @@ glamor_create_composite_fs(struct shader_key *key)
"{\n" "{\n"
" gl_FragColor = get_source() * get_mask().a;\n" " gl_FragColor = get_source() * get_mask().a;\n"
"}\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; char *source;
const char *source_fetch; const char *source_fetch;
const char *mask_fetch = ""; const char *mask_fetch = "";
@ -161,6 +171,12 @@ glamor_create_composite_fs(struct shader_key *key)
case SHADER_IN_NORMAL: case SHADER_IN_NORMAL:
in = in_normal; in = in_normal;
break; break;
case SHADER_IN_CA_SOURCE:
in = in_ca_source;
break;
case SHADER_IN_CA_ALPHA:
in = in_ca_alpha;
break;
default: default:
FatalError("Bad composite IN type"); FatalError("Bad composite IN type");
} }
@ -615,11 +631,22 @@ glamor_composite_with_shader(CARD8 op,
} }
} }
key.in = SHADER_IN_NORMAL; 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 {
assert(op == PictOpOutReverse);
key.in = SHADER_IN_CA_ALPHA;
}
}
} else { } else {
key.mask = SHADER_MASK_NONE; key.mask = SHADER_MASK_NONE;
key.in = SHADER_IN_SOURCE_ONLY; key.in = SHADER_IN_SOURCE_ONLY;
} }
if (source->alphaMap) { if (source->alphaMap) {
glamor_fallback("source alphaMap\n"); glamor_fallback("source alphaMap\n");
goto fail; goto fail;
@ -838,22 +865,25 @@ glamor_composite(CARD8 op,
/* Do two-pass PictOpOver componentAlpha, until we enable /* Do two-pass PictOpOver componentAlpha, until we enable
* dual source color blending. * dual source color blending.
*/ */
if (mask && mask->componentAlpha) if (mask && mask->componentAlpha) {
goto fail; if (op == PictOpOver) {
if (mask && mask->componentAlpha && op == PictOpOver) { glamor_composite(PictOpOutReverse,
glamor_composite(PictOpOutReverse, source, mask, dest,
source, mask, dest, x_source, y_source,
x_source, y_source, x_mask, y_mask,
x_mask, y_mask, x_dest, y_dest,
x_dest, y_dest, width, height);
width, height); glamor_composite(PictOpAdd,
glamor_composite(PictOpAdd, source, mask, dest,
source, mask, dest, x_source, y_source,
x_source, y_source, x_mask, y_mask,
x_mask, y_mask, x_dest, y_dest,
x_dest, y_dest, width, height);
width, height); return;
return; } else if (op != PictOpAdd && op != PictOpOutReverse) {
glamor_fallback("glamor_composite(): component alpha\n");
goto fail;
}
} }
if (!mask) { if (!mask) {