77 lines
2.6 KiB
C++
77 lines
2.6 KiB
C++
//
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// Copyright Contributors to the MaterialX Project
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// SPDX-License-Identifier: Apache-2.0
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//
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#ifndef MATERIALX_GLSLRESOURCEBINDING_H
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#define MATERIALX_GLSLRESOURCEBINDING_H
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/// @file
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/// GLSL resource binding context
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#include <MaterialXGenGlsl/Export.h>
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#include <MaterialXGenShader/HwShaderGenerator.h>
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MATERIALX_NAMESPACE_BEGIN
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/// Shared pointer to a GlslResourceBindingContext
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using GlslResourceBindingContextPtr = shared_ptr<class GlslResourceBindingContext>;
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/// @class GlslResourceBindingContext
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/// Class representing a resource binding for Glsl shader resources.
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class MX_GENGLSL_API GlslResourceBindingContext : public HwResourceBindingContext
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{
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public:
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GlslResourceBindingContext(size_t uniformBindingLocation, size_t samplerBindingLocation);
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static GlslResourceBindingContextPtr create(
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size_t uniformBindingLocation = 0, size_t samplerBindingLocation = 0)
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{
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return std::make_shared<GlslResourceBindingContext>(
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uniformBindingLocation, samplerBindingLocation);
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}
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// Initialize the context before generation starts.
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void initialize() override;
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// Emit directives for stage
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void emitDirectives(GenContext& context, ShaderStage& stage) override;
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// Emit uniforms with binding information
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void emitResourceBindings(GenContext& context, const VariableBlock& uniforms, ShaderStage& stage) override;
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// Emit structured uniforms with binding information and align members where possible
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void emitStructuredResourceBindings(GenContext& context, const VariableBlock& uniforms,
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ShaderStage& stage, const std::string& structInstanceName,
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const std::string& arraySuffix) override;
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// Emit separate binding locations for sampler and uniform table
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void enableSeparateBindingLocations(bool separateBindingLocation) { _separateBindingLocation = separateBindingLocation; };
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protected:
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// List of required extensions
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StringSet _requiredExtensions;
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// Binding location for uniform blocks
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size_t _hwUniformBindLocation = 0;
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// Initial value of uniform binding location
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size_t _hwInitUniformBindLocation = 0;
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// Binding location for sampler blocks
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size_t _hwSamplerBindLocation = 0;
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// Initial value of sampler binding location
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size_t _hwInitSamplerBindLocation = 0;
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// Separate binding locations flag
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// Indicates whether to use a shared binding counter for samplers and uniforms or separate ones.
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// By default a shader counter is used.
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bool _separateBindingLocation = false;
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};
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MATERIALX_NAMESPACE_END
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#endif
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