forked from dolphin-emu/dolphin
129 lines
3.4 KiB
C++
129 lines
3.4 KiB
C++
// Copyright 2008 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <memory>
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#include "Common/Assert.h"
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#include "Common/GL/GLInterfaceBase.h"
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#include "Common/GL/GLUtil.h"
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#include "Common/Logging/Log.h"
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std::unique_ptr<cInterfaceBase> GLInterface;
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namespace GLUtil
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{
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void InitInterface()
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{
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GLInterface = HostGL_CreateGLInterface();
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}
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GLuint CompileProgram(const std::string& vertexShader, const std::string& fragmentShader)
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{
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// generate objects
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GLuint vertexShaderID = glCreateShader(GL_VERTEX_SHADER);
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GLuint fragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER);
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GLuint programID = glCreateProgram();
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// compile vertex shader
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const char* shader = vertexShader.c_str();
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glShaderSource(vertexShaderID, 1, &shader, nullptr);
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glCompileShader(vertexShaderID);
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#if defined(_DEBUG) || defined(DEBUGFAST)
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GLint Result = GL_FALSE;
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char stringBuffer[1024];
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GLsizei stringBufferUsage = 0;
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glGetShaderiv(vertexShaderID, GL_COMPILE_STATUS, &Result);
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glGetShaderInfoLog(vertexShaderID, 1024, &stringBufferUsage, stringBuffer);
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if (Result && stringBufferUsage)
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{
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ERROR_LOG(VIDEO, "GLSL vertex shader warnings:\n%s%s", stringBuffer, vertexShader.c_str());
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}
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else if (!Result)
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{
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ERROR_LOG(VIDEO, "GLSL vertex shader error:\n%s%s", stringBuffer, vertexShader.c_str());
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}
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else
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{
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INFO_LOG(VIDEO, "GLSL vertex shader compiled:\n%s", vertexShader.c_str());
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}
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bool shader_errors = !Result;
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#endif
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// compile fragment shader
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shader = fragmentShader.c_str();
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glShaderSource(fragmentShaderID, 1, &shader, nullptr);
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glCompileShader(fragmentShaderID);
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#if defined(_DEBUG) || defined(DEBUGFAST)
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glGetShaderiv(fragmentShaderID, GL_COMPILE_STATUS, &Result);
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glGetShaderInfoLog(fragmentShaderID, 1024, &stringBufferUsage, stringBuffer);
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if (Result && stringBufferUsage)
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{
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ERROR_LOG(VIDEO, "GLSL fragment shader warnings:\n%s%s", stringBuffer, fragmentShader.c_str());
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}
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else if (!Result)
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{
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ERROR_LOG(VIDEO, "GLSL fragment shader error:\n%s%s", stringBuffer, fragmentShader.c_str());
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}
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else
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{
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INFO_LOG(VIDEO, "GLSL fragment shader compiled:\n%s", fragmentShader.c_str());
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}
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shader_errors |= !Result;
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#endif
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// link them
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glAttachShader(programID, vertexShaderID);
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glAttachShader(programID, fragmentShaderID);
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glLinkProgram(programID);
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#if defined(_DEBUG) || defined(DEBUGFAST)
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glGetProgramiv(programID, GL_LINK_STATUS, &Result);
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glGetProgramInfoLog(programID, 1024, &stringBufferUsage, stringBuffer);
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if (Result && stringBufferUsage)
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{
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ERROR_LOG(VIDEO, "GLSL linker warnings:\n%s%s%s", stringBuffer, vertexShader.c_str(),
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fragmentShader.c_str());
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}
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else if (!Result && !shader_errors)
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{
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ERROR_LOG(VIDEO, "GLSL linker error:\n%s%s%s", stringBuffer, vertexShader.c_str(),
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fragmentShader.c_str());
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}
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#endif
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// cleanup
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glDeleteShader(vertexShaderID);
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glDeleteShader(fragmentShaderID);
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return programID;
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}
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void EnablePrimitiveRestart()
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{
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constexpr GLuint PRIMITIVE_RESTART_INDEX = 65535;
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if (GLInterface->GetMode() == GLInterfaceMode::MODE_OPENGLES3)
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{
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glEnable(GL_PRIMITIVE_RESTART_FIXED_INDEX);
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}
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else
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{
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if (GLExtensions::Version() >= 310)
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{
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glEnable(GL_PRIMITIVE_RESTART);
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glPrimitiveRestartIndex(PRIMITIVE_RESTART_INDEX);
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}
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else
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{
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glEnableClientState(GL_PRIMITIVE_RESTART_NV);
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glPrimitiveRestartIndexNV(PRIMITIVE_RESTART_INDEX);
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}
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}
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}
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}
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