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From Holger Helmich, Tessellation shader support

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This commit is contained in:
Robert Osfield
2010-11-23 14:50:31 +00:00
parent 5b3691e602
commit d7747685b3
9 changed files with 181 additions and 8 deletions
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33
src/osg/GL2Extensions.cpp
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@@ -302,6 +302,10 @@ void GL2Extensions::lowestCommonDenominator(const GL2Extensions& rhs)
if (!rhs._glFramebufferTextureLayer) _glFramebufferTextureLayer = 0;
if (!rhs._glFramebufferTextureFace) _glFramebufferTextureFace = 0;
// ARB_tessellation_shader
if (!rhs._glPatchParameteri) _glPatchParameteri = 0;
if (!rhs._glPatchParameterfv) _glPatchParameterfv = 0;
// EXT_gpu_shader4
if (!rhs._glGetUniformuiv) _glGetUniformuiv = 0;
if (!rhs._glBindFragDataLocation) _glBindFragDataLocation = 0;
@@ -337,6 +341,7 @@ void GL2Extensions::setupGL2Extensions(unsigned int contextID)
_isLanguage100Supported = shadersBuiltIn || osg::isGLExtensionSupported(contextID,"GL_ARB_shading_language_100");
_isGeometryShader4Supported = osg::isGLExtensionSupported(contextID,"GL_EXT_geometry_shader4");
_isGpuShader4Supported = osg::isGLExtensionSupported(contextID,"GL_EXT_gpu_shader4");
_areTessellationShadersSupported = osg::isGLExtensionSupported(contextID, "GL_ARB_tessellation_shader");
if( isGlslSupported() )
{
@@ -470,6 +475,10 @@ void GL2Extensions::setupGL2Extensions(unsigned int contextID)
setGLExtensionFuncPtr(_glFramebufferTextureLayer, "glFramebufferTextureLayer", "glFramebufferTextureLayerEXT" );
setGLExtensionFuncPtr(_glFramebufferTextureFace, "glFramebufferTextureFace", "glFramebufferTextureFaceEXT" );
// ARB_tesselation_shader
setGLExtensionFuncPtr(_glPatchParameteri, "glPatchParameteri" );
setGLExtensionFuncPtr(_glPatchParameterfv, "glPatchParameterfv");
// EXT_gpu_shader4
setGLExtensionFuncPtr(_glGetUniformuiv, "glGetUniformuiv", "glGetUniformuivEXT" );
setGLExtensionFuncPtr(_glBindFragDataLocation, "glBindFragDataLocation", "glBindFragDataLocationEXT" );
@@ -1973,6 +1982,30 @@ void GL2Extensions::glFramebufferTextureFace( GLenum target, GLenum attachment,
}
}
void GL2Extensions::glPatchParameteri( GLenum pname, GLint value ) const
{
if (_glPatchParameteri)
{
_glPatchParameteri( pname, value );
}
else
{
NotSupported( "glPatchParameteri" );
}
}
void GL2Extensions::glPatchParameterfv( GLenum pname, const GLfloat* values ) const
{
if (_glPatchParameterfv)
{
_glPatchParameterfv( pname, values );
}
else
{
NotSupported( "glPatchParameterfv" );
}
}
void GL2Extensions::glGetUniformuiv( GLuint program, GLint location, GLuint* params ) const
{