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0024894: TKOpenGl - refactor OpenGl_FrameBuffer and OpenGl_Texture classes.

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This commit is contained in:
osa
2014-05-05 16:10:00 +04:00
committed by bugmaster
parent eb1ebea490
commit 18f4e8e28d
5 changed files with 245 additions and 322 deletions
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278
src/OpenGl/OpenGl_Texture.cxx
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@@ -162,38 +162,34 @@ void OpenGl_Texture::Unbind (const Handle(OpenGl_Context)& theCtx,
glBindTexture (myTarget, NO_TEXTURE);
}
// =======================================================================
// function : Init
// purpose :
// =======================================================================
bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx,
const Image_PixMap& theImage,
const Graphic3d_TypeOfTexture theType)
//=======================================================================
//function : GetDataFormat
//purpose :
//=======================================================================
bool OpenGl_Texture::GetDataFormat (const Handle(OpenGl_Context)& theCtx,
const Image_PixMap& theData,
GLint& theTextFormat,
GLenum& thePixelFormat,
GLenum& theDataType)
{
myHasMipmaps = Standard_False;
if (theImage.IsEmpty() || !Create (theCtx))
{
return false;
}
myTextFormat = GL_RGBA8;
GLenum aPixelFormat = 0;
GLenum aDataType = 0;
switch (theImage.Format())
theTextFormat = GL_RGBA8;
thePixelFormat = 0;
theDataType = 0;
switch (theData.Format())
{
case Image_PixMap::ImgGrayF:
{
myTextFormat = GL_ALPHA8; // GL_R8, GL_R32F
aPixelFormat = GL_ALPHA; // GL_RED
aDataType = GL_FLOAT;
break;
theTextFormat = GL_ALPHA8; // GL_R8, GL_R32F
thePixelFormat = GL_ALPHA; // GL_RED
theDataType = GL_FLOAT;
return true;
}
case Image_PixMap::ImgRGBAF:
{
myTextFormat = GL_RGBA8; // GL_RGBA32F
aPixelFormat = GL_RGBA;
aDataType = GL_FLOAT;
break;
theTextFormat = GL_RGBA8; // GL_RGBA32F
thePixelFormat = GL_RGBA;
theDataType = GL_FLOAT;
return true;
}
case Image_PixMap::ImgBGRAF:
{
@@ -201,31 +197,31 @@ bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx,
{
return false;
}
myTextFormat = GL_RGBA8; // GL_RGBA32F
aPixelFormat = GL_BGRA; // equals to GL_BGRA_EXT
aDataType = GL_FLOAT;
break;
theTextFormat = GL_RGBA8; // GL_RGBA32F
thePixelFormat = GL_BGRA; // equals to GL_BGRA_EXT
theDataType = GL_FLOAT;
return true;
}
case Image_PixMap::ImgRGBF:
{
myTextFormat = GL_RGB8; // GL_RGB32F
aPixelFormat = GL_RGB;
aDataType = GL_FLOAT;
break;
theTextFormat = GL_RGB8; // GL_RGB32F
thePixelFormat = GL_RGB;
theDataType = GL_FLOAT;
return true;
}
case Image_PixMap::ImgBGRF:
{
myTextFormat = GL_RGB8; // GL_RGB32F
aPixelFormat = GL_BGR; // equals to GL_BGR_EXT
aDataType = GL_FLOAT;
break;
theTextFormat = GL_RGB8; // GL_RGB32F
thePixelFormat = GL_BGR; // equals to GL_BGR_EXT
theDataType = GL_FLOAT;
return true;
}
case Image_PixMap::ImgRGBA:
{
myTextFormat = GL_RGBA8;
aPixelFormat = GL_RGBA;
aDataType = GL_UNSIGNED_BYTE;
break;
theTextFormat = GL_RGBA8;
thePixelFormat = GL_RGBA;
theDataType = GL_UNSIGNED_BYTE;
return true;
}
case Image_PixMap::ImgBGRA:
{
@@ -233,17 +229,17 @@ bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx,
{
return false;
}
myTextFormat = GL_RGBA8;
aPixelFormat = GL_BGRA; // equals to GL_BGRA_EXT
aDataType = GL_UNSIGNED_BYTE;
break;
theTextFormat = GL_RGBA8;
thePixelFormat = GL_BGRA; // equals to GL_BGRA_EXT
theDataType = GL_UNSIGNED_BYTE;
return true;
}
case Image_PixMap::ImgRGB32:
{
myTextFormat = GL_RGB8;
aPixelFormat = GL_RGBA;
aDataType = GL_UNSIGNED_BYTE;
break;
theTextFormat = GL_RGB8;
thePixelFormat = GL_RGBA;
theDataType = GL_UNSIGNED_BYTE;
return true;
}
case Image_PixMap::ImgBGR32:
{
@@ -251,17 +247,17 @@ bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx,
{
return false;
}
myTextFormat = GL_RGB8;
aPixelFormat = GL_BGRA; // equals to GL_BGRA_EXT
aDataType = GL_UNSIGNED_BYTE;
break;
theTextFormat = GL_RGB8;
thePixelFormat = GL_BGRA; // equals to GL_BGRA_EXT
theDataType = GL_UNSIGNED_BYTE;
return true;
}
case Image_PixMap::ImgRGB:
{
myTextFormat = GL_RGB8;
aPixelFormat = GL_RGB;
aDataType = GL_UNSIGNED_BYTE;
break;
theTextFormat = GL_RGB8;
thePixelFormat = GL_RGB;
theDataType = GL_UNSIGNED_BYTE;
return true;
}
case Image_PixMap::ImgBGR:
{
@@ -269,27 +265,48 @@ bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx,
{
return false;
}
myTextFormat = GL_RGB8;
aPixelFormat = GL_BGR; // equals to GL_BGR_EXT
aDataType = GL_UNSIGNED_BYTE;
break;
theTextFormat = GL_RGB8;
thePixelFormat = GL_BGR; // equals to GL_BGR_EXT
theDataType = GL_UNSIGNED_BYTE;
return true;
}
case Image_PixMap::ImgGray:
{
myTextFormat = GL_ALPHA8; // GL_R8
aPixelFormat = GL_ALPHA; // GL_RED
aDataType = GL_UNSIGNED_BYTE;
break;
theTextFormat = GL_ALPHA8; // GL_R8
thePixelFormat = GL_ALPHA; // GL_RED
theDataType = GL_UNSIGNED_BYTE;
return true;
}
default:
{
return false;
}
}
}
// =======================================================================
// function : Init
// purpose :
// =======================================================================
bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx,
const Standard_Integer theTextFormat,
const GLenum thePixelFormat,
const GLenum theDataType,
const Standard_Integer theSizeX,
const Standard_Integer theSizeY,
const Graphic3d_TypeOfTexture theType,
const Image_PixMap* theImage)
{
if (!Create (theCtx))
{
Release (theCtx.operator->());
return false;
}
myHasMipmaps = Standard_False;
myTextFormat = theTextFormat;
const GLsizei aWidth = theSizeX;
const GLsizei aHeight = theSizeY;
const GLsizei aMaxSize = theCtx->MaxTextureSize();
const GLsizei aWidth = (GLsizei )theImage.SizeX();
const GLsizei aHeight = (GLsizei )theImage.SizeY();
// Notice that formally general NPOT textures are required by OpenGL 2.0 specifications
// however some hardware (NV30 - GeForce FX, RadeOn 9xxx and Xxxx) supports GLSL but not NPOT!
@@ -301,16 +318,20 @@ bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx,
GLint aTestWidth = 0;
GLint aTestHeight = 0;
GLvoid* aDataPtr = (theImage != NULL) ? (GLvoid* )theImage->Data() : NULL;
// setup the alignment
OpenGl_UnpackAlignmentSentry anUnpackSentry;
const GLint anAligment = Min ((GLint )theImage.MaxRowAligmentBytes(), 8); // OpenGL supports alignment upto 8 bytes
glPixelStorei (GL_UNPACK_ALIGNMENT, anAligment);
if (aDataPtr != NULL)
{
const GLint anAligment = Min ((GLint )theImage->MaxRowAligmentBytes(), 8); // OpenGL supports alignment upto 8 bytes
glPixelStorei (GL_UNPACK_ALIGNMENT, anAligment);
// notice that GL_UNPACK_ROW_LENGTH is not available on OpenGL ES 2.0 without GL_EXT_unpack_subimage extension
const GLint anExtraBytes = GLint(theImage.RowExtraBytes());
const GLint aPixelsWidth = GLint(theImage.SizeRowBytes() / theImage.SizePixelBytes());
glPixelStorei (GL_UNPACK_ROW_LENGTH, (anExtraBytes >= anAligment) ? aPixelsWidth : 0);
// notice that GL_UNPACK_ROW_LENGTH is not available on OpenGL ES 2.0 without GL_EXT_unpack_subimage extension
const GLint anExtraBytes = GLint(theImage->RowExtraBytes());
const GLint aPixelsWidth = GLint(theImage->SizeRowBytes() / theImage->SizePixelBytes());
glPixelStorei (GL_UNPACK_ROW_LENGTH, (anExtraBytes >= anAligment) ? aPixelsWidth : 0);
}
switch (theType)
{
@@ -322,42 +343,47 @@ bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx,
glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
Image_PixMap aCopy;
GLvoid* aDataPtr = (GLvoid* )theImage.Data();
if (aWidth != aWidthOut)
if (aDataPtr != NULL)
{
glPixelStorei (GL_PACK_ALIGNMENT, 1);
glPixelStorei (GL_PACK_ROW_LENGTH, 0);
if (!aCopy.InitTrash (theImage.Format(), Standard_Size(aWidthOut), 1)
|| gluScaleImage (aPixelFormat,
aWidth, 1, aDataType, theImage.Data(),
aWidthOut, 1, aDataType, aCopy.ChangeData()) != 0)
if (aWidth != aWidthOut)
{
Unbind (theCtx);
return false;
}
glPixelStorei (GL_PACK_ALIGNMENT, 1);
glPixelStorei (GL_PACK_ROW_LENGTH, 0);
if (!aCopy.InitTrash (theImage->Format(), Standard_Size(aWidthOut), 1)
|| gluScaleImage (thePixelFormat,
aWidth, 1, theDataType, theImage->Data(),
aWidthOut, 1, theDataType, aCopy.ChangeData()) != 0)
{
Unbind (theCtx);
Release (theCtx.operator->());
return false;
}
aDataPtr = (GLvoid* )aCopy.Data();
anUnpackSentry.Reset();
aDataPtr = (GLvoid* )aCopy.Data();
anUnpackSentry.Reset();
}
}
// use proxy to check texture could be created or not
glTexImage1D (GL_PROXY_TEXTURE_1D, 0, myTextFormat,
aWidthOut, 0,
aPixelFormat, aDataType, NULL);
thePixelFormat, theDataType, NULL);
glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &aTestWidth);
if (aTestWidth == 0)
{
// no memory or broken input parameters
Unbind (theCtx);
Release (theCtx.operator->());
return false;
}
glTexImage1D (GL_TEXTURE_1D, 0, myTextFormat,
aWidthOut, 0,
aPixelFormat, aDataType, aDataPtr);
thePixelFormat, theDataType, aDataPtr);
if (glGetError() != GL_NO_ERROR)
{
Unbind (theCtx);
Release (theCtx.operator->());
return false;
}
@@ -375,44 +401,49 @@ bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx,
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
Image_PixMap aCopy;
GLvoid* aDataPtr = (GLvoid* )theImage.Data();
if (aWidth != aWidthOut || aHeight != aHeightOut)
if (aDataPtr != NULL)
{
// scale texture
glPixelStorei (GL_PACK_ALIGNMENT, 1);
glPixelStorei (GL_PACK_ROW_LENGTH, 0);
if (!aCopy.InitTrash (theImage.Format(), Standard_Size(aWidthOut), Standard_Size(aHeightOut))
|| gluScaleImage (aPixelFormat,
aWidth, aHeight, aDataType, theImage.Data(),
aWidthOut, aHeightOut, aDataType, aCopy.ChangeData()) != 0)
if (aWidth != aWidthOut || aHeight != aHeightOut)
{
Unbind (theCtx);
return false;
}
// scale texture
glPixelStorei (GL_PACK_ALIGNMENT, 1);
glPixelStorei (GL_PACK_ROW_LENGTH, 0);
if (!aCopy.InitTrash (theImage->Format(), Standard_Size(aWidthOut), Standard_Size(aHeightOut))
|| gluScaleImage (thePixelFormat,
aWidth, aHeight, theDataType, theImage->Data(),
aWidthOut, aHeightOut, theDataType, aCopy.ChangeData()) != 0)
{
Unbind (theCtx);
Release (theCtx.operator->());
return false;
}
aDataPtr = (GLvoid* )aCopy.Data();
anUnpackSentry.Reset();
aDataPtr = (GLvoid* )aCopy.Data();
anUnpackSentry.Reset();
}
}
// use proxy to check texture could be created or not
glTexImage2D (GL_PROXY_TEXTURE_2D, 0, myTextFormat,
aWidthOut, aHeightOut, 0,
aPixelFormat, aDataType, NULL);
thePixelFormat, theDataType, NULL);
glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &aTestWidth);
glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &aTestHeight);
if (aTestWidth == 0 || aTestHeight == 0)
{
// no memory or broken input parameters
Unbind (theCtx);
Release (theCtx.operator->());
return false;
}
glTexImage2D (GL_TEXTURE_2D, 0, myTextFormat,
aWidthOut, aHeightOut, 0,
aPixelFormat, aDataType, aDataPtr);
thePixelFormat, theDataType, aDataPtr);
if (glGetError() != GL_NO_ERROR)
{
Unbind (theCtx);
Release (theCtx.operator->());
return false;
}
@@ -436,23 +467,25 @@ bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx,
// use proxy to check texture could be created or not
glTexImage2D (GL_PROXY_TEXTURE_2D, 0, myTextFormat,
aWidthOut, aHeightOut, 0,
aPixelFormat, aDataType, NULL);
thePixelFormat, theDataType, NULL);
glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &aTestWidth);
glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &aTestHeight);
if (aTestWidth == 0 || aTestHeight == 0)
{
// no memory or broken input parameters
Unbind (theCtx);
Release (theCtx.operator->());
return false;
}
// upload main picture
glTexImage2D (GL_TEXTURE_2D, 0, myTextFormat,
aWidthOut, aHeightOut, 0,
aPixelFormat, aDataType, theImage.Data());
thePixelFormat, theDataType, theImage->Data());
if (glGetError() != GL_NO_ERROR)
{
Unbind (theCtx);
Release (theCtx.operator->());
return false;
}
@@ -470,7 +503,7 @@ bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx,
{
bool isCreated = gluBuild2DMipmaps (GL_TEXTURE_2D, myTextFormat,
aWidth, aHeight,
aPixelFormat, aDataType, theImage.Data()) == 0;
thePixelFormat, theDataType, theImage->Data()) == 0;
if (isCreated)
{
glGetTexLevelParameteriv (GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &mySizeX);
@@ -483,11 +516,42 @@ bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx,
}
default:
{
Release (theCtx.operator->());
return false;
}
}
}
// =======================================================================
// function : Init
// purpose :
// =======================================================================
bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx,
const Image_PixMap& theImage,
const Graphic3d_TypeOfTexture theType)
{
if (theImage.IsEmpty())
{
Release (theCtx.operator->());
return false;
}
GLenum aPixelFormat;
GLenum aDataType;
GLint aTextFormat;
if (!GetDataFormat (theCtx, theImage, aTextFormat, aPixelFormat, aDataType))
{
Release (theCtx.operator->());
return false;
}
return Init (theCtx,
aTextFormat, aPixelFormat, aDataType,
(Standard_Integer)theImage.SizeX(),
(Standard_Integer)theImage.SizeY(),
theType, &theImage);
}
// =======================================================================
// function : InitRectangle
// purpose :