initial commit

source/opengl/handles/shader_program_handle.ipp

@@ -0,0 +1,63 @@
+#ifndef INCLUDE_GL_SHADER_PROGRAM_INSTANCE_IMPLEMENTATION
+#error Never include this file directly include 'shader_program_handle.hpp'
+#endif
+
+#include "glm/glm.hpp"
+#include "glm/gtc/type_ptr.hpp"
+
+namespace zgl
+{
+inline void shader_program_handle::bind() const
+{
+	glUseProgram(program_id);
+}
+
+inline void shader_program_handle::unbind()
+{
+	glUseProgram(0);
+}
+
+template<shader_program_variable::info_type VariableInfo, typename T>
+void shader_program_handle::set_uniform(const T& value) const
+{
+	if constexpr (std::same_as<T, glm::mat4x4>)
+	{
+		static_assert(VariableInfo.type == GL_FLOAT_MAT4);
+		glUniformMatrix4fv(VariableInfo.location, 1, false, glm::value_ptr(value));
+	}
+	else if constexpr (std::same_as<T, glm::mat3x3>)
+	{
+		static_assert(VariableInfo.type == GL_FLOAT_MAT3);
+		glUniformMatrix3fv(VariableInfo.location, 1, false, glm::value_ptr(value));
+	}
+	else if constexpr (std::same_as<T, glm::fvec4>)
+	{
+		static_assert(VariableInfo.type == GL_FLOAT_VEC4);
+		glUniform4fv(VariableInfo.location, 1, glm::value_ptr(value));
+	}
+	else if constexpr (std::same_as<T, glm::fvec3>)
+	{
+		static_assert(VariableInfo.type == GL_FLOAT_VEC3);
+		glUniform3fv(VariableInfo.location, 1, glm::value_ptr(value));
+	}
+	else if constexpr (std::same_as<T, glm::fvec2>)
+	{
+		static_assert(VariableInfo.type == GL_FLOAT_VEC2);
+		glUniform2fv(VariableInfo.location, 1, glm::value_ptr(value));
+	}
+	else if constexpr (std::same_as<T, float>)
+	{
+		static_assert(VariableInfo.type == GL_FLOAT);
+		glUniform1f(VariableInfo.location, value);
+	}
+	else if constexpr (std::same_as<T, int>)
+	{
+		static_assert(VariableInfo.type == GL_INT or VariableInfo.type == GL_SAMPLER_2D);
+		glUniform1i(VariableInfo.location, value);
+	}
+	else
+	{
+		T::_unknown_shader_uniform_type_;
+	}
+}
+}