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Texture binding

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Aiden
2026-05-08 17:04:28 +10:00
parent 7d8f9a39d1
commit f458eb0130
7 changed files with 181 additions and 78 deletions
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41
apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderProgramCompiler.cpp
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@@ -101,51 +101,24 @@ bool ShaderProgramCompiler::CompilePreparedLayerProgram(const RuntimeRenderState
std::vector<LayerProgram::TextBinding> textBindings;
mTextureBindings.CreateTextBindings(state, textBindings);
layerProgram.layerId = state.layerId;
layerProgram.shaderId = state.shaderId;
layerProgram.shaderTextureBase = mTextureBindings.ResolveShaderTextureBase(state, mRuntimeHost.GetMaxTemporalHistoryFrames());
layerProgram.textureBindings.swap(textureBindings);
layerProgram.textBindings.swap(textBindings);
const GLuint globalParamsIndex = glGetUniformBlockIndex(newProgram.get(), "GlobalParams");
if (globalParamsIndex != GL_INVALID_INDEX)
glUniformBlockBinding(newProgram.get(), globalParamsIndex, kGlobalParamsBindingPoint);
const unsigned historyCap = mRuntimeHost.GetMaxTemporalHistoryFrames();
const GLuint shaderTextureBase = state.isTemporal ? kSourceHistoryTextureUnitBase + historyCap + historyCap : kSourceHistoryTextureUnitBase;
glUseProgram(newProgram.get());
const GLint videoInputLocation = glGetUniformLocation(newProgram.get(), "gVideoInput");
if (videoInputLocation >= 0)
glUniform1i(videoInputLocation, static_cast<GLint>(kDecodedVideoTextureUnit));
for (unsigned index = 0; index < historyCap; ++index)
{
const std::string sourceSamplerName = "gSourceHistory" + std::to_string(index);
const GLint sourceSamplerLocation = glGetUniformLocation(newProgram.get(), sourceSamplerName.c_str());
if (sourceSamplerLocation >= 0)
glUniform1i(sourceSamplerLocation, static_cast<GLint>(kSourceHistoryTextureUnitBase + index));
const std::string temporalSamplerName = "gTemporalHistory" + std::to_string(index);
const GLint temporalSamplerLocation = glGetUniformLocation(newProgram.get(), temporalSamplerName.c_str());
if (temporalSamplerLocation >= 0)
glUniform1i(temporalSamplerLocation, static_cast<GLint>(kSourceHistoryTextureUnitBase + historyCap + index));
}
for (std::size_t index = 0; index < textureBindings.size(); ++index)
{
const GLint textureSamplerLocation = mTextureBindings.FindSamplerUniformLocation(newProgram.get(), textureBindings[index].samplerName);
if (textureSamplerLocation >= 0)
glUniform1i(textureSamplerLocation, static_cast<GLint>(shaderTextureBase + static_cast<GLuint>(index)));
}
const GLuint textTextureBase = shaderTextureBase + static_cast<GLuint>(textureBindings.size());
for (std::size_t index = 0; index < textBindings.size(); ++index)
{
const GLint textSamplerLocation = mTextureBindings.FindSamplerUniformLocation(newProgram.get(), textBindings[index].samplerName);
if (textSamplerLocation >= 0)
glUniform1i(textSamplerLocation, static_cast<GLint>(textTextureBase + static_cast<GLuint>(index)));
}
mTextureBindings.AssignLayerSamplerUniforms(newProgram.get(), state, layerProgram, historyCap);
glUseProgram(0);
layerProgram.layerId = state.layerId;
layerProgram.shaderId = state.shaderId;
layerProgram.shaderTextureBase = shaderTextureBase;
layerProgram.program = newProgram.release();
layerProgram.vertexShader = newVertexShader.release();
layerProgram.fragmentShader = newFragmentShader.release();
layerProgram.textureBindings.swap(textureBindings);
layerProgram.textBindings.swap(textBindings);
return true;
}