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0022819: Redesign of OpenGl driver

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This commit is contained in:
SAN, KGV
2012-02-03 12:59:15 +00:00
committed by bugmaster
parent 1d2b1ccb45
commit 2166f0fad8
362 changed files with 19749 additions and 57863 deletions
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124
src/OpenGl/OpenGl_FrameBuffer.cxx
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@@ -1,15 +1,13 @@
// File: OpenGl_FrameBuffer.cxx
// Author: Kirill GAVRILOV
// Copyright: OPEN CASCADE 2011
#include <OpenGl_FrameBuffer.hxx>
#ifdef DEB
#include <iostream>
#endif
#ifndef WNT
#define glGetProcAddress( x ) glXGetProcAddress( (const GLubyte*) x )
#else
#define glGetProcAddress( x ) wglGetProcAddress( x )
#endif
static inline bool isOddNumber (const GLsizei theNumber)
{
return theNumber & 0x01;
@@ -39,43 +37,6 @@ static inline GLsizei getPowerOfTwo (const GLsizei theNumber,
return theThreshold;
}
Standard_Boolean OpenGl_FrameBuffer::AreFBOFunctionsValid()
{
return glGenFramebuffersEXT != NULL
&& glDeleteFramebuffersEXT != NULL
&& glBindFramebufferEXT != NULL
&& glFramebufferTexture2DEXT != NULL
&& glCheckFramebufferStatusEXT != NULL
&& glGenRenderbuffersEXT != NULL
&& glBindRenderbufferEXT != NULL
&& glDeleteRenderbuffersEXT != NULL
&& glRenderbufferStorageEXT != NULL
&& glFramebufferRenderbufferEXT != NULL;
}
Standard_Boolean OpenGl_FrameBuffer::InitFBOFunctions()
{
if (AreFBOFunctionsValid())
{
return Standard_True;
}
if (CheckExtension ((char *)"GL_EXT_framebuffer_object", (const char *)glGetString (GL_EXTENSIONS)))
{
glGenFramebuffersEXT = (glGenFramebuffersEXT_t) glGetProcAddress ("glGenFramebuffersEXT");
glDeleteFramebuffersEXT = (glDeleteFramebuffersEXT_t) glGetProcAddress ("glDeleteFramebuffersEXT");
glBindFramebufferEXT = (glBindFramebufferEXT_t) glGetProcAddress ("glBindFramebufferEXT");
glFramebufferTexture2DEXT = (glFramebufferTexture2DEXT_t) glGetProcAddress ("glFramebufferTexture2DEXT");
glCheckFramebufferStatusEXT = (glCheckFramebufferStatusEXT_t) glGetProcAddress ("glCheckFramebufferStatusEXT");
glGenRenderbuffersEXT = (glGenRenderbuffersEXT_t) glGetProcAddress ("glGenRenderbuffersEXT");
glDeleteRenderbuffersEXT = (glDeleteRenderbuffersEXT_t) glGetProcAddress ("glDeleteRenderbuffersEXT");
glBindRenderbufferEXT = (glBindRenderbufferEXT_t) glGetProcAddress ("glBindRenderbufferEXT");
glRenderbufferStorageEXT = (glRenderbufferStorageEXT_t) glGetProcAddress ("glRenderbufferStorageEXT");
glFramebufferRenderbufferEXT = (glFramebufferRenderbufferEXT_t)glGetProcAddress ("glFramebufferRenderbufferEXT");
return AreFBOFunctionsValid();
}
return Standard_False;
}
OpenGl_FrameBuffer::OpenGl_FrameBuffer (GLint theTextureFormat)
: mySizeX (0),
mySizeY (0),
@@ -84,26 +45,17 @@ OpenGl_FrameBuffer::OpenGl_FrameBuffer (GLint theTextureFormat)
myTextFormat (theTextureFormat),
myGlTextureId (NO_TEXTURE),
myGlFBufferId (NO_FRAMEBUFFER),
myGlDepthRBId (NO_RENDERBUFFER),
glGenFramebuffersEXT (NULL),
glDeleteFramebuffersEXT (NULL),
glBindFramebufferEXT (NULL),
glFramebufferTexture2DEXT (NULL),
glCheckFramebufferStatusEXT (NULL),
glGenRenderbuffersEXT (NULL),
glDeleteRenderbuffersEXT (NULL),
glBindRenderbufferEXT (NULL),
glRenderbufferStorageEXT (NULL),
glFramebufferRenderbufferEXT (NULL)
myGlDepthRBId (NO_RENDERBUFFER)
{
//
}
Standard_Boolean OpenGl_FrameBuffer::Init (GLsizei theViewportSizeX,
Standard_Boolean OpenGl_FrameBuffer::Init (const Handle(OpenGl_Context)& theGlContext,
GLsizei theViewportSizeX,
GLsizei theViewportSizeY,
GLboolean toForcePowerOfTwo)
{
if (!InitFBOFunctions())
if (theGlContext->extFBO == NULL)
{
#ifdef DEB
std::cerr << "OpenGl_FrameBuffer, FBO extension not supported!\n";
@@ -112,7 +64,7 @@ Standard_Boolean OpenGl_FrameBuffer::Init (GLsizei theViewportSizeX,
}
// clean up previous state
Release();
Release (theGlContext);
// upscale width/height if numbers are odd
if (toForcePowerOfTwo)
@@ -133,41 +85,41 @@ Standard_Boolean OpenGl_FrameBuffer::Init (GLsizei theViewportSizeX,
myVPSizeY = theViewportSizeY;
// Create the texture (will be used as color buffer)
if (!InitTrashTexture())
if (!InitTrashTexture (theGlContext))
{
if (!isPowerOfTwo (mySizeX) || !isPowerOfTwo (mySizeY))
{
return Init (theViewportSizeX, theViewportSizeY, GL_TRUE);
return Init (theGlContext, theViewportSizeX, theViewportSizeY, GL_TRUE);
}
Release();
Release (theGlContext);
return Standard_False;
}
// Create RenderBuffer (will be used as depth buffer)
glGenRenderbuffersEXT (1, &myGlDepthRBId);
glBindRenderbufferEXT (GL_RENDERBUFFER_EXT, myGlDepthRBId);
glRenderbufferStorageEXT (GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, mySizeX, mySizeY);
theGlContext->extFBO->glGenRenderbuffersEXT (1, &myGlDepthRBId);
theGlContext->extFBO->glBindRenderbufferEXT (GL_RENDERBUFFER_EXT, myGlDepthRBId);
theGlContext->extFBO->glRenderbufferStorageEXT (GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, mySizeX, mySizeY);
// Build FBO and setup it as texture
glGenFramebuffersEXT (1, &myGlFBufferId);
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, myGlFBufferId);
theGlContext->extFBO->glGenFramebuffersEXT (1, &myGlFBufferId);
theGlContext->extFBO->glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, myGlFBufferId);
glEnable (GL_TEXTURE_2D);
glBindTexture (GL_TEXTURE_2D, myGlTextureId);
glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, myGlTextureId, 0);
glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, myGlFBufferId);
if (glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT) != GL_FRAMEBUFFER_COMPLETE_EXT)
theGlContext->extFBO->glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, myGlTextureId, 0);
theGlContext->extFBO->glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, myGlFBufferId);
if (theGlContext->extFBO->glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT) != GL_FRAMEBUFFER_COMPLETE_EXT)
{
if (!isPowerOfTwo (mySizeX) || !isPowerOfTwo (mySizeY))
{
return Init (theViewportSizeX, theViewportSizeY, GL_TRUE);
return Init (theGlContext, theViewportSizeX, theViewportSizeY, GL_TRUE);
}
Release();
Release (theGlContext);
return Standard_False;
}
UnbindBuffer();
UnbindBuffer (theGlContext);
UnbindTexture();
glBindRenderbufferEXT (GL_RENDERBUFFER_EXT, NO_RENDERBUFFER);
theGlContext->extFBO->glBindRenderbufferEXT (GL_RENDERBUFFER_EXT, NO_RENDERBUFFER);
#ifdef DEB
std::cerr << "OpenGl_FrameBuffer, created FBO " << mySizeX << "x" << mySizeY
@@ -176,12 +128,19 @@ Standard_Boolean OpenGl_FrameBuffer::Init (GLsizei theViewportSizeX,
return Standard_True;
}
void OpenGl_FrameBuffer::Release()
void OpenGl_FrameBuffer::Release (const Handle(OpenGl_Context)& theGlContext)
{
if (IsValidDepthBuffer())
{
glDeleteRenderbuffersEXT (1, &myGlDepthRBId);
myGlDepthRBId = NO_RENDERBUFFER;
if (!theGlContext.IsNull() && theGlContext->extFBO != NULL)
{
theGlContext->extFBO->glDeleteRenderbuffersEXT (1, &myGlDepthRBId);
myGlDepthRBId = NO_RENDERBUFFER;
}
else
{
std::cerr << "OpenGl_FrameBuffer::Release() called with invalid OpenGl_Context!\n";
}
}
if (IsValidTexture())
{
@@ -191,8 +150,15 @@ void OpenGl_FrameBuffer::Release()
mySizeX = mySizeY = myVPSizeX = myVPSizeY = 0;
if (IsValidFrameBuffer())
{
glDeleteFramebuffersEXT (1, &myGlFBufferId);
myGlFBufferId = NO_FRAMEBUFFER;
if (!theGlContext.IsNull() && theGlContext->extFBO != NULL)
{
theGlContext->extFBO->glDeleteFramebuffersEXT (1, &myGlFBufferId);
myGlFBufferId = NO_FRAMEBUFFER;
}
else
{
std::cerr << "OpenGl_FrameBuffer::Release() called with invalid OpenGl_Context!\n";
}
}
}
@@ -210,7 +176,7 @@ Standard_Boolean OpenGl_FrameBuffer::IsProxySuccess() const
return aTestParamX != 0 && aTestParamY != 0;
}
Standard_Boolean OpenGl_FrameBuffer::InitTrashTexture()
Standard_Boolean OpenGl_FrameBuffer::InitTrashTexture (const Handle(OpenGl_Context)& theGlContext)
{
// Check texture size is fit dimension maximum
GLint aMaxTexDim = 2048;
@@ -234,7 +200,7 @@ Standard_Boolean OpenGl_FrameBuffer::InitTrashTexture()
if (!IsProxySuccess())
{
Release();
Release (theGlContext);
return Standard_False;
}