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// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "Globals.h"
#include "VideoConfig.h"
#include "IniFile.h"
#include "Core.h"
#include "Host.h"
#include "VideoBackend.h"
#include "ConfigManager.h"
#include "Render.h"
#include "VertexShaderManager.h"
#include "GLUtil.h"
GLWindow GLWin;
cInterfaceBase *GLInterface;
namespace OGL
{
// Draw messages on top of the screen
unsigned int VideoBackend::PeekMessages()
{
return GLInterface->PeekMessages();
}
// Show the current FPS
void VideoBackend::UpdateFPSDisplay(const char *text)
{
char temp[100];
snprintf(temp, sizeof temp, "%s | OpenGL | %s", scm_rev_str, text);
return GLInterface->UpdateFPSDisplay(temp);
}
}
void InitInterface()
{
#if defined(USE_EGL) && USE_EGL
GLInterface = new cInterfaceEGL;
#elif defined(__APPLE__)
GLInterface = new cInterfaceAGL;
#elif defined(_WIN32)
GLInterface = new cInterfaceWGL;
#elif defined(HAVE_X11) && HAVE_X11
GLInterface = new cInterfaceGLX;
#endif
}
GLuint OpenGL_CompileProgram ( const char* vertexShader, const char* fragmentShader )
{
// generate objects
GLuint vertexShaderID = glCreateShader(GL_VERTEX_SHADER);
GLuint fragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER);
GLuint programID = glCreateProgram();
// compile vertex shader
glShaderSource(vertexShaderID, 1, &vertexShader, NULL);
glCompileShader(vertexShaderID);
#if defined(_DEBUG) || defined(DEBUGFAST) || defined(DEBUG_GLSL)
GLint Result = GL_FALSE;
char stringBuffer[1024];
GLsizei stringBufferUsage = 0;
glGetShaderiv(vertexShaderID, GL_COMPILE_STATUS, &Result);
glGetShaderInfoLog(vertexShaderID, 1024, &stringBufferUsage, stringBuffer);
if(Result && stringBufferUsage) {
ERROR_LOG(VIDEO, "GLSL vertex shader warnings:\n%s%s", stringBuffer, vertexShader);
} else if(!Result) {
ERROR_LOG(VIDEO, "GLSL vertex shader error:\n%s%s", stringBuffer, vertexShader);
} else {
DEBUG_LOG(VIDEO, "GLSL vertex shader compiled:\n%s", vertexShader);
}
bool shader_errors = !Result;
#endif
// compile fragment shader
glShaderSource(fragmentShaderID, 1, &fragmentShader, NULL);
glCompileShader(fragmentShaderID);
#if defined(_DEBUG) || defined(DEBUGFAST) || defined(DEBUG_GLSL)
glGetShaderiv(fragmentShaderID, GL_COMPILE_STATUS, &Result);
glGetShaderInfoLog(fragmentShaderID, 1024, &stringBufferUsage, stringBuffer);
if(Result && stringBufferUsage) {
ERROR_LOG(VIDEO, "GLSL fragment shader warnings:\n%s%s", stringBuffer, fragmentShader);
} else if(!Result) {
ERROR_LOG(VIDEO, "GLSL fragment shader error:\n%s%s", stringBuffer, fragmentShader);
} else {
DEBUG_LOG(VIDEO, "GLSL fragment shader compiled:\n%s", fragmentShader);
}
shader_errors |= !Result;
#endif
// link them
glAttachShader(programID, vertexShaderID);
glAttachShader(programID, fragmentShaderID);
glLinkProgram(programID);
#if defined(_DEBUG) || defined(DEBUGFAST) || defined(DEBUG_GLSL)
glGetProgramiv(programID, GL_LINK_STATUS, &Result);
glGetProgramInfoLog(programID, 1024, &stringBufferUsage, stringBuffer);
if(Result && stringBufferUsage) {
ERROR_LOG(VIDEO, "GLSL linker warnings:\n%s%s%s", stringBuffer, vertexShader, fragmentShader);
} else if(!Result && !shader_errors) {
ERROR_LOG(VIDEO, "GLSL linker error:\n%s%s%s", stringBuffer, vertexShader, fragmentShader);
}
#endif
// cleanup
glDeleteShader(vertexShaderID);
glDeleteShader(fragmentShaderID);
return programID;
}
GLuint OpenGL_ReportGLError(const char *function, const char *file, int line)
{
GLint err = glGetError();
if (err != GL_NO_ERROR)
{
ERROR_LOG(VIDEO, "%s:%d: (%s) OpenGL error 0x%x\n",
file, line, function, err);
}
return err;
}
void OpenGL_ReportARBProgramError()
{
#ifndef USE_GLES
const GLubyte* pstr = glGetString(GL_PROGRAM_ERROR_STRING_ARB);
if (pstr != NULL && pstr[0] != 0)
{
GLint loc = 0;
glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &loc);
ERROR_LOG(VIDEO, "Program error at %d: ", loc);
ERROR_LOG(VIDEO, "%s", (char*)pstr);
ERROR_LOG(VIDEO, "\n");
}
#endif
}
bool OpenGL_ReportFBOError(const char *function, const char *file, int line)
{
#ifndef USE_GLES
unsigned int fbo_status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (fbo_status != GL_FRAMEBUFFER_COMPLETE)
{
const char *error = "unknown error";
switch (fbo_status)
{
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
error = "INCOMPLETE_ATTACHMENT";
break;
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
error = "INCOMPLETE_MISSING_ATTACHMENT";
break;
case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER:
error = "INCOMPLETE_DRAW_BUFFER";
break;
case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER:
error = "INCOMPLETE_READ_BUFFER";
break;
case GL_FRAMEBUFFER_UNSUPPORTED:
error = "UNSUPPORTED";
break;
}
ERROR_LOG(VIDEO, "%s:%d: (%s) OpenGL FBO error - %s\n",
file, line, function, error);
return false;
}
#endif
return true;
}
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