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106 lines
2.6 KiB
C++
106 lines
2.6 KiB
C++
#include "stdafx.h"
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#include "RenderShader.h"
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#include "File.h"
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// We need to include the OpenGL classes
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#include "Mangler.h"
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namespace Assets
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{
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RenderShader::RenderShader()
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: _ProgramID(0)
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{
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}
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RenderShader::~RenderShader()
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{
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glDeleteProgram(this->_ProgramID);
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}
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void RenderShader::LoadShader(const char* VertSource, const char* FragSource)
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{
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auto VertShaderID = glCreateShader(GL_VERTEX_SHADER);
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auto FragShaderID = glCreateShader(GL_FRAGMENT_SHADER);
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if (VertSource != nullptr && FragSource != nullptr)
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{
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glShaderSource(VertShaderID, 1, &VertSource, nullptr);
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glCompileShader(VertShaderID);
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glShaderSource(FragShaderID, 1, &FragSource, nullptr);
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glCompileShader(FragShaderID);
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}
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this->_ProgramID = glCreateProgram();
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glAttachShader(this->_ProgramID, VertShaderID);
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glAttachShader(this->_ProgramID, FragShaderID);
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glLinkProgram(this->_ProgramID);
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glDetachShader(this->_ProgramID, VertShaderID);
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glDetachShader(this->_ProgramID, FragShaderID);
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glDeleteShader(VertShaderID);
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glDeleteShader(FragShaderID);
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}
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void RenderShader::LoadShader(const string& VertPath, const string& FragPath)
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{
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auto VertShaderID = glCreateShader(GL_VERTEX_SHADER);
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auto FragShaderID = glCreateShader(GL_FRAGMENT_SHADER);
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auto VertSource = IO::File::ReadAllText(VertPath);
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auto FragSource = IO::File::ReadAllText(FragPath);
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char* VertPtr = (char*)VertSource.ToCString();
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char* FragPtr = (char*)FragSource.ToCString();
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glShaderSource(VertShaderID, 1, &VertPtr, nullptr);
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glCompileShader(VertShaderID);
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glShaderSource(FragShaderID, 1, &FragPtr, nullptr);
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glCompileShader(FragShaderID);
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#if _DEBUG
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GLint success = 0;
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glGetShaderiv(VertShaderID, GL_COMPILE_STATUS, &success);
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if (!success)
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{
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GLint maxLength = 0;
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glGetShaderiv(VertShaderID, GL_INFO_LOG_LENGTH, &maxLength);
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auto log = std::make_unique<char[]>(maxLength);
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glGetShaderInfoLog(VertShaderID, maxLength, &maxLength, log.get());
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printf("Shader compile error: %s\n", log.get());
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}
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#endif
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this->_ProgramID = glCreateProgram();
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glAttachShader(this->_ProgramID, VertShaderID);
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glAttachShader(this->_ProgramID, FragShaderID);
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glLinkProgram(this->_ProgramID);
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glDetachShader(this->_ProgramID, VertShaderID);
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glDetachShader(this->_ProgramID, FragShaderID);
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glDeleteShader(VertShaderID);
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glDeleteShader(FragShaderID);
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}
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void RenderShader::Use()
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{
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glUseProgram(this->_ProgramID);
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}
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void RenderShader::Detatch()
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{
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glUseProgram(0);
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}
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uint32_t RenderShader::GetUniformLocation(const char* Name)
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{
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return glGetUniformLocation(this->_ProgramID, Name);
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}
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}
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