59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
#pragma once
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#include <mbgl/gfx/shader.hpp>
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#include <mbgl/gfx/vertex_attribute.hpp>
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#include <mbgl/util/identity.hpp>
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#include <string>
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namespace mbgl {
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namespace gfx {
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class ShaderProgramBase : public gfx::Shader {
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protected:
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ShaderProgramBase() {}
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ShaderProgramBase(ShaderProgramBase&&) {}
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~ShaderProgramBase() noexcept override = default;
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template <typename T>
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bool set(gfx::VertexAttributeArray& attrs, const std::string& name, std::size_t i, T value) {
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auto* item = attrs.get(name);
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if (item && i < item->getCount()) {
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item->set(i, value);
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return true;
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}
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return false;
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}
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public:
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const util::SimpleIdentity& getID() const { return shaderProgramID; }
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/// Get the available vertex attributes and their default values
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virtual const gfx::VertexAttributeArray& getUniforms() const = 0;
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/// Get the available vertex attributes and their default values
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virtual const gfx::VertexAttributeArray& getVertexAttributes() const = 0;
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// Set a value if the element is present
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template <typename T>
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bool setUniform(const std::string& name, std::size_t i, T value) {
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return set(mutableUniforms(), name, i, value);
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}
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template <typename T>
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bool setAttribute(const std::string& name, std::size_t i, T value) {
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return set(mutableVertexAttributes(), name, i, value);
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}
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void updateUniforms() { mutableUniforms().applyUniforms(*this); }
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protected:
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virtual gfx::VertexAttributeArray& mutableUniforms() = 0;
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virtual gfx::VertexAttributeArray& mutableVertexAttributes() = 0;
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protected:
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util::SimpleIdentity shaderProgramID;
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};
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} // namespace gfx
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} // namespace mbgl
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