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Implemented biased textureCube sampling 

TRAC #11884
Signed-off-by: Andrew Lewycky
Signed-off-by: Daniel Koch

Author:    Nicolas Capens

git-svn-id: https://angleproject.googlecode.com/svn/trunk@162 736b8ea6-26fd-11df-bfd4-992fa37f6226
This commit is contained in:
daniel@transgaming.com 2010-04-20 18:52:04 +00:00
Родитель 8fd99e2696
Коммит 5024cc4940
2 изменённых файлов: 106 добавлений и 25 удалений
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125
src/compiler/OutputHLSL.cpp
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@ -24,6 +24,12 @@ OutputHLSL::OutputHLSL(TParseContext &context) : TIntermTraverser(true, true, tr
{
mUnfoldSelect = new UnfoldSelect(context, this);
mUsesTexture2D = false;
mUsesTexture2D_bias = false;
mUsesTexture2DProj = false;
mUsesTexture2DProj_bias = false;
mUsesTextureCube = false;
mUsesTextureCube_bias = false;
mUsesEqualMat2 = false;
mUsesEqualMat3 = false;
mUsesEqualMat4 = false;
@ -135,26 +141,71 @@ void OutputHLSL::header()
"static float4 gl_FragCoord = float4(0, 0, 0, 0);\n"
"static float2 gl_PointCoord = float2(0.5, 0.5);\n"
"static bool gl_FrontFacing = false;\n"
"\n"
"float4 gl_texture2D(sampler2D s, float2 t)\n"
"{\n"
" return tex2D(s, t);\n"
"}\n"
"\n"
"float4 gl_texture2DProj(sampler2D s, float3 t)\n"
"{\n"
" return tex2Dproj(s, float4(t.x, t.y, 0, t.z));\n"
"}\n"
"float4 gl_texture2DBias(sampler2D s, float2 t, float bias)\n"
"{\n"
" return tex2Dbias(s, float4(t.x, t.y, 0, bias));\n"
"}\n"
"\n"
"float4 gl_textureCube(samplerCUBE s, float3 t)\n"
"{\n"
" return texCUBE(s, t);\n"
"}\n"
"\n";
if (mUsesTexture2D)
{
out << "float4 gl_texture2D(sampler2D s, float2 t)\n"
"{\n"
" return tex2D(s, t);\n"
"}\n"
"\n";
}
if (mUsesTexture2D_bias)
{
out << "float4 gl_texture2D(sampler2D s, float2 t, float bias)\n"
"{\n"
" return tex2Dbias(s, float4(t.x, t.y, 0, bias));\n"
"}\n"
"\n";
}
if (mUsesTexture2DProj)
{
out << "float4 gl_texture2DProj(sampler2D s, float3 t)\n"
"{\n"
" return tex2Dproj(s, float4(t.x, t.y, 0, t.z));\n"
"}\n"
"\n"
"float4 gl_texture2DProj(sampler2D s, float4 t)\n"
"{\n"
" return tex2Dproj(s, t);\n"
"}\n"
"\n";
}
if (mUsesTexture2DProj_bias)
{
out << "float4 gl_texture2DProj(sampler2D s, float3 t, float bias)\n"
"{\n"
" return tex2Dbias(s, float4(t.x / t.z, t.y / t.z, 0, bias));\n"
"}\n"
"\n"
"float4 gl_texture2DProj(sampler2D s, float4 t, float bias)\n"
"{\n"
" return tex2Dbias(s, float4(t.x / t.w, t.y / t.w, 0, bias));\n"
"}\n"
"\n";
}
if (mUsesTextureCube)
{
out << "float4 gl_textureCube(samplerCUBE s, float3 t)\n"
"{\n"
" return texCUBE(s, t);\n"
"}\n"
"\n";
}
if (mUsesTextureCube_bias)
{
out << "float4 gl_textureCube(samplerCUBE s, float3 t, float bias)\n"
"{\n"
" return texCUBEbias(s, float4(t.x, t.y, t.z, bias));\n"
"}\n"
"\n";
}
}
else // Vertex shader
{
@ -1135,31 +1186,55 @@ bool OutputHLSL::visitAggregate(Visit visit, TIntermAggregate *node)
{
if (node->getSequence().size() == 2)
{
out << "gl_texture2D(";
mUsesTexture2D = true;
}
else if (node->getSequence().size() == 3)
{
out << "gl_texture2DBias(";
mUsesTexture2D_bias = true;
}
else UNREACHABLE();
out << "gl_texture2D(";
}
else if (name == "texture2DProj")
{
if (node->getSequence().size() == 2)
{
mUsesTexture2DProj = true;
}
else if (node->getSequence().size() == 3)
{
mUsesTexture2DProj_bias = true;
}
else UNREACHABLE();
out << "gl_texture2DProj(";
}
else if (name == "textureCube")
{
if (node->getSequence().size() == 2)
{
mUsesTextureCube = true;
}
else if (node->getSequence().size() == 3)
{
mUsesTextureCube_bias = true;
}
else UNREACHABLE();
out << "gl_textureCube(";
}
else if (name == "texture2DLod")
{
out << "gl_texture2DLod(";
UNIMPLEMENTED(); // Requires the vertex shader texture sampling extension
}
else if (name == "texture2DProjLod")
{
out << "gl_texture2DProjLod(";
UNIMPLEMENTED(); // Requires the vertex shader texture sampling extension
}
else if (name == "textureCube")
else if (name == "textureCubeLod")
{
out << "gl_textureCube(";
UNIMPLEMENTED(); // Requires the vertex shader texture sampling extension
}
else UNREACHABLE();
}

6
src/compiler/OutputHLSL.h
Просмотреть файл

@ -58,6 +58,12 @@ class OutputHLSL : public TIntermTraverser
TInfoSinkBase mFooter;
// Parameters determining what goes in the header output
bool mUsesTexture2D;
bool mUsesTexture2D_bias;
bool mUsesTexture2DProj;
bool mUsesTexture2DProj_bias;
bool mUsesTextureCube;
bool mUsesTextureCube_bias;
bool mUsesEqualMat2;
bool mUsesEqualMat3;
bool mUsesEqualMat4;