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tibia-client
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use ARB extensions

This commit is contained in:
Eduardo Bart 2011-03-18 21:22:29 -03:00
parent f6dc07022c
commit 5142e912cc
3 changed files with 50 additions and 19 deletions
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38
src/framework/framebuffer.cpp
View File

@ -25,11 +25,11 @@
#include "platform.h"
#include "graphics.h"
PFNGLGENFRAMEBUFFERSEXTPROC oglGenFramebuffersEXT = 0;
PFNGLBINDFRAMEBUFFEREXTPROC oglBindFramebufferEXT = 0;
PFNGLFRAMEBUFFERTEXTURE2DEXTPROC oglFramebufferTexture2DEXT = 0;
PFNGLDELETEFRAMEBUFFERSEXTPROC oglDeleteFramebuffersEXT = 0;
PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC oglCheckFramebufferStatusEXT = 0;
PFNGLGENFRAMEBUFFERSPROC oglGenFramebuffers = 0;
PFNGLBINDFRAMEBUFFERPROC oglBindFramebuffer = 0;
PFNGLFRAMEBUFFERTEXTURE2DPROC oglFramebufferTexture2D = 0;
PFNGLDELETEFRAMEBUFFERSPROC oglDeleteFramebuffers = 0;
PFNGLCHECKFRAMEBUFFERSTATUSPROC oglCheckFramebufferStatus = 0;
FrameBuffer::FrameBuffer(int width, int height)
{
@ -49,24 +49,24 @@ FrameBuffer::FrameBuffer(int width, int height)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// use FBO ext only if supported
if(Platform::isExtensionSupported("EXT_framebuffer_object")) {
if(g_graphics.isExtensionSupported("ARB_framebuffer_object")) {
m_fallbackOldImp = false;
if(!oglGenFramebuffersEXT) {
oglGenFramebuffersEXT = (PFNGLGENFRAMEBUFFERSEXTPROC)Platform::getExtensionProcAddress("glGenFramebuffersEXT");
oglBindFramebufferEXT = (PFNGLBINDFRAMEBUFFEREXTPROC)Platform::getExtensionProcAddress("glBindFramebufferEXT");
oglFramebufferTexture2DEXT = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC)Platform::getExtensionProcAddress("glFramebufferTexture2DEXT");
oglDeleteFramebuffersEXT = (PFNGLDELETEFRAMEBUFFERSEXTPROC)Platform::getExtensionProcAddress("glDeleteFramebuffersEXT");
oglCheckFramebufferStatusEXT = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC)Platform::getExtensionProcAddress("glCheckFramebufferStatusEXT");
if(!oglGenFramebuffers) {
oglGenFramebuffers = (PFNGLGENFRAMEBUFFERSPROC)Platform::getExtensionProcAddress("glGenFramebuffers");
oglBindFramebuffer = (PFNGLBINDFRAMEBUFFERPROC)Platform::getExtensionProcAddress("glBindFramebuffer");
oglFramebufferTexture2D = (PFNGLFRAMEBUFFERTEXTURE2DPROC)Platform::getExtensionProcAddress("glFramebufferTexture2D");
oglDeleteFramebuffers = (PFNGLDELETEFRAMEBUFFERSPROC)Platform::getExtensionProcAddress("glDeleteFramebuffers");
oglCheckFramebufferStatus = (PFNGLCHECKFRAMEBUFFERSTATUSPROC)Platform::getExtensionProcAddress("glCheckFramebufferStatus");
}
// generate FBO
oglGenFramebuffersEXT(1, &m_fbo);
oglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo);
oglGenFramebuffers(1, &m_fbo);
oglBindFramebuffer(GL_FRAMEBUFFER_EXT, m_fbo);
// attach 2D texture to this FBO
oglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, m_fboTexture, 0);
oglFramebufferTexture2D(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, m_fboTexture, 0);
GLenum status = oglCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
GLenum status = oglCheckFramebufferStatus(GL_FRAMEBUFFER_EXT);
switch(status) {
case GL_FRAMEBUFFER_COMPLETE_EXT:
//ok
@ -85,14 +85,14 @@ FrameBuffer::~FrameBuffer()
{
glDeleteTextures(1, &m_fboTexture);
if(m_fbo)
oglDeleteFramebuffersEXT(1, &m_fbo);
oglDeleteFramebuffers(1, &m_fbo);
}
void FrameBuffer::bind()
{
if(!m_fallbackOldImp) {
// bind framebuffer
oglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo);
oglBindFramebuffer(GL_FRAMEBUFFER_EXT, m_fbo);
}
// setup framebuffer viewport
@ -114,7 +114,7 @@ void FrameBuffer::unbind()
{
if(!m_fallbackOldImp) {
// bind back buffer again
oglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
oglBindFramebuffer(GL_FRAMEBUFFER_EXT, 0);
glDrawBuffer(GL_BACK);
glReadBuffer(GL_BACK);

29
src/framework/graphics.cpp
View File

@ -58,6 +58,35 @@ void Graphics::terminate()
}
bool Graphics::isExtensionSupported(const char *extension)
{
const GLubyte *extensions = NULL;
const GLubyte *start;
GLubyte *where, *terminator;
where = (GLubyte *)strchr(extension, ' ');
if(where || *extension == '\0')
return 0;
extensions = glGetString(GL_EXTENSIONS);
start = extensions;
while(true) {
where = (GLubyte *) strstr((const char *)start, extension);
if(!where)
break;
terminator = where + strlen(extension);
if(where == start || *(where - 1) == ' ')
if(*terminator == ' ' || *terminator == '\0')
return 1;
start = terminator;
}
return 0;
}
void Graphics::resize(int width, int height)
{
m_screenSize.setWidth(width);

2
src/framework/graphics.h
View File

@ -41,6 +41,8 @@ public:
void init();
void terminate();
bool isExtensionSupported(const char *extension);
/// Called after every window resize
void resize(int width, int height);