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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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52
include/osg/GL2Extensions
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@@ -3,6 +3,7 @@
* Copyright (C) 2004-2005 Nathan Cournia
* Copyright (C) 2007 Art Tevs
* Copyright (C) 2008 Zebra Imaging
* Copyright (C) 2010 VIRES Simulationstechnologie GmbH
*
* This application is open source and may be redistributed and/or modified
* freely and without restriction, both in commercial and non commercial
@@ -15,6 +16,7 @@
/* file: include/osg/GL2Extensions
* author: Mike Weiblen 2008-01-02
* Holger Helmich 2010-10-21
*/
#ifndef OSG_GL2EXTENSIONS
@@ -178,6 +180,42 @@ typedef char GLchar;
#define GL_PROGRAM_POINT_SIZE_EXT 0x8642
#endif
// ARB_tesselation_shader
#ifndef GL_TESS_EVALUATION_SHADER
#define GL_PATCHES 0x000E
#define GL_PATCH_VERTICES 0x8E72
#define GL_PATCH_DEFAULT_INNER_LEVEL 0x8E73
#define GL_PATCH_DEFAULT_OUTER_LEVEL 0x8E74
#define GL_MAX_PATCH_VERTICES 0x8E7D
#define GL_MAX_TESS_GEN_LEVEL 0x8E7E
#define GL_MAX_TESS_CONTROL_UNIFORM_COMPONENTS 0x8E7F
#define GL_MAX_TESS_EVALUATION_UNIFORM_COMPONENTS 0x8E80
#define GL_MAX_TESS_CONTROL_TEXTURE_IMAGE_UNITS 0x8E81
#define GL_MAX_MAX_TESS_EVALUATION_TEXTURE_IMAGE_UNITS 0x8E82
#define GL_MAX_MAX_TESS_CONTROL_OUTPUT_COMPONENTS 0x8E83
#define GL_MAX_MAX_TESS_PATCH_COMPONENTS 0x8E84
#define GL_MAX_MAX_TESS_CONTROL_TOTAL_OUTPUT_COMPONENTS 0x8E85
#define GL_MAX_MAX_TESS_EVALUATION_OUTPUT_COMPONENTS 0x8E86
#define GL_MAX_MAX_TESS_CONTROL_UNIFORM_BLOCKS 0x8E89
#define GL_MAX_MAX_TESS_EVALUATION_UNIFORM_BLOCKS 0x8E8A
#define GL_MAX_MAX_TESS_CONTROL_INPUT_COMPONENTS 0x886C
#define GL_MAX_MAX_TESS_EVALUATION_INPUT_COMPONENTS 0x886D
#define GL_MAX_MAX_COMBINED_TESS_CONTROL_UNIFORM_COMPONENTS 0x8E1E
#define GL_MAX_MAX_COMBINED_TESS_EVALUATION_UNIFORM_COMPONENTS 0x8E1F
#define GL_TESS_EVALUATION_SHADER 0x8E87
#define GL_TESS_CONTROL_SHADER 0x8E88
#define GL_TESS_CONTROL_OUTPUT_VERTICES 0x8E75
#define GL_TESS_GEN_MODE 0x8E76
#define GL_TESS_GEN_SPACING 0x8E77
#define GL_TESS_GEN_VERTEX_ORDER 0x8E78
#define GL_TESS_GEN_POINT_MODE 0x8E79
#define GL_ISOLINES 0x8E7A
#define GL_FRACTIONAL_ODD 0x8E7B
#define GL_FRACTIONAL_EVEN 0x8E7C
#define GL_UNIFORM_BLOCK_REFERENCED_BY_TESS_CONTROL_SHADER 0x84F0
#define GL_UNIFORM_BLOCK_REFERENCED_BY_TESS_EVALUATION_SHADER 0x84F1
#endif
// EXT_gpu_shader4
#ifndef GL_INT_SAMPLER_2D_EXT
#define GL_SAMPLER_1D_ARRAY_EXT 0x8DC0
@@ -243,6 +281,9 @@ class OSG_EXPORT GL2Extensions : public osg::Referenced
void setGeometryShader4Supported(bool flag) { _isGeometryShader4Supported = flag; }
bool isGeometryShader4Supported() const { return _isGeometryShader4Supported; }
void setTessellationShadersSupported(bool flag) { _areTessellationShadersSupported = flag; }
bool areTessellationShadersSupported() const { return _areTessellationShadersSupported; }
void setGpuShader4Supported(bool flag) { _isGpuShader4Supported = flag; }
bool isGpuShader4Supported() const { return _isGpuShader4Supported; }
@@ -375,6 +416,10 @@ class OSG_EXPORT GL2Extensions : public osg::Referenced
void glFramebufferTextureLayer( GLenum target, GLenum attachment, GLuint texture, GLint level, GLint layer ) const;
void glFramebufferTextureFace( GLenum target, GLenum attachment, GLuint texture, GLint level, GLenum face ) const;
// ARB_tessellation_shader
void glPatchParameteri(GLenum pname, GLint value) const;
void glPatchParameterfv(GLenum pname, const GLfloat *values) const;
// EXT_gpu_shader4
void glGetUniformuiv( GLuint program, GLint location, GLuint *params ) const;
void glBindFragDataLocation( GLuint program, GLuint color, const GLchar *name ) const;
@@ -399,6 +444,7 @@ class OSG_EXPORT GL2Extensions : public osg::Referenced
bool _isFragmentShaderSupported;
bool _isLanguage100Supported;
bool _isGeometryShader4Supported;
bool _areTessellationShadersSupported;
bool _isGpuShader4Supported;
typedef void (GL_APIENTRY * BlendEquationSeparateProc)(GLenum modeRGB, GLenum modeAlpha);
@@ -507,6 +553,8 @@ class OSG_EXPORT GL2Extensions : public osg::Referenced
typedef void (GL_APIENTRY * FramebufferTextureProc)( GLenum target, GLenum attachment, GLuint texture, GLint level );
typedef void (GL_APIENTRY * FramebufferTextureLayerProc)( GLenum target, GLenum attachment, GLuint texture, GLint level, GLint layer );
typedef void (GL_APIENTRY * FramebufferTextureFaceProc)( GLenum target, GLenum attachment, GLuint texture, GLint level, GLenum face );
typedef void (GL_APIENTRY * PatchParameteriProc)( GLenum pname, GLint value );
typedef void (GL_APIENTRY * PatchParameterfvProc)( GLenum pname, const GLfloat* values );
typedef void (GL_APIENTRY * GetUniformuivProc)( GLuint program, GLint location, GLuint* params );
typedef void (GL_APIENTRY * BindFragDataLocationProc)( GLuint program, GLuint color, const GLchar* name );
typedef GLint (GL_APIENTRY * GetFragDataLocationProc)( GLuint program, const GLchar* name );
@@ -633,6 +681,10 @@ class OSG_EXPORT GL2Extensions : public osg::Referenced
FramebufferTextureLayerProc _glFramebufferTextureLayer;
FramebufferTextureFaceProc _glFramebufferTextureFace;
// ARB_tesselation_shader
PatchParameteriProc _glPatchParameteri;
PatchParameterfvProc _glPatchParameterfv;
// EXT_gpu_shader4
GetUniformuivProc _glGetUniformuiv;
BindFragDataLocationProc _glBindFragDataLocation;