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Bug 1012407 - Part 7: Use a single GL draw call to draw up to 4 texture quads (r=Bas)

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This commit is contained in:
Andreas Gal
2014-05-28 10:15:31 -04:00
parent 030012b19f
commit 660a7b0b54
5 changed files with 77 additions and 42 deletions
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17
gfx/layers/opengl/OGLShaderProgram.cpp
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@@ -32,10 +32,10 @@ AddUniforms(ProgramProfileOGL& aProfile)
static const char *sKnownUniformNames[] = {
"uLayerTransform",
"uMaskTransform",
"uLayerRect",
"uLayerRects",
"uMatrixProj",
"uTextureTransform",
"uTextureRect",
"uTextureRects",
"uRenderTargetOffset",
"uLayerOpacity",
"uTexture",
@@ -146,7 +146,7 @@ ProgramProfileOGL::GetProfileFor(ShaderConfigOGL aConfig)
AddUniforms(result);
vs << "uniform mat4 uMatrixProj;" << endl;
vs << "uniform vec4 uLayerRect;" << endl;
vs << "uniform vec4 uLayerRects[4];" << endl;
vs << "uniform mat4 uLayerTransform;" << endl;
vs << "uniform vec4 uRenderTargetOffset;" << endl;
@@ -154,8 +154,8 @@ ProgramProfileOGL::GetProfileFor(ShaderConfigOGL aConfig)
if (!(aConfig.mFeatures & ENABLE_RENDER_COLOR)) {
vs << "uniform mat4 uTextureTransform;" << endl;
vs << "uniform vec4 uTextureRect;" << endl;
vs << "attribute vec2 aTexCoord;" << endl;
vs << "uniform vec4 uTextureRects[4];" << endl;
vs << "attribute vec4 aTexCoord;" << endl;
vs << "varying vec2 vTexCoord;" << endl;
}
@@ -166,7 +166,9 @@ ProgramProfileOGL::GetProfileFor(ShaderConfigOGL aConfig)
}
vs << "void main() {" << endl;
vs << " vec4 finalPosition = vec4(aVertexCoord.xy * uLayerRect.zw + uLayerRect.xy, 0.0, 1.0);" << endl;
vs << " int vertexID = int(aVertexCoord.w);" << endl;
vs << " vec4 layerRect = uLayerRects[vertexID];" << endl;
vs << " vec4 finalPosition = vec4(aVertexCoord.xy * layerRect.zw + layerRect.xy, 0.0, 1.0);" << endl;
vs << " finalPosition = uLayerTransform * finalPosition;" << endl;
vs << " finalPosition.xyz /= finalPosition.w;" << endl;
@@ -184,7 +186,8 @@ ProgramProfileOGL::GetProfileFor(ShaderConfigOGL aConfig)
vs << " finalPosition = uMatrixProj * finalPosition;" << endl;
if (!(aConfig.mFeatures & ENABLE_RENDER_COLOR)) {
vs << " vec2 texCoord = aTexCoord * uTextureRect.zw + uTextureRect.xy;" << endl;
vs << " vec4 textureRect = uTextureRects[vertexID];" << endl;
vs << " vec2 texCoord = aTexCoord.xy * textureRect.zw + textureRect.xy;" << endl;
vs << " vTexCoord = (uTextureTransform * vec4(texCoord, 0.0, 1.0)).xy;" << endl;
}