From Mike Weiblen, support for geometry shaders, and osgeometryshaders example to demonstrate them.
This commit is contained in:
Robert Osfield
@@ -2,6 +2,7 @@
|
||||
* Copyright (C) 2003-2005 3Dlabs Inc. Ltd.
|
||||
* Copyright (C) 2004-2005 Nathan Cournia
|
||||
* Copyright (C) 2007 Art Tevs
|
||||
* Copyright (C) 2008 Zebra Imaging
|
||||
*
|
||||
* This application is open source and may be redistributed and/or modified
|
||||
* freely and without restriction, both in commericial and non commericial
|
||||
@@ -13,7 +14,7 @@
|
||||
*/
|
||||
|
||||
/* file: include/osg/GL2Extensions
|
||||
* author: Mike Weiblen 2005-05-05
|
||||
* author: Mike Weiblen 2008-01-02
|
||||
*/
|
||||
|
||||
#ifndef OSG_GL2EXTENSIONS
|
||||
@@ -31,8 +32,7 @@
|
||||
#define GL_SAMPLER_2D_ARRAY_SHADOW_EXT 0x8DC4
|
||||
#endif
|
||||
|
||||
|
||||
#ifndef GL_VERSION_2_0 //[
|
||||
#ifndef GL_VERSION_2_0
|
||||
#define GL_VERSION_2_0 1
|
||||
typedef char GLchar;
|
||||
#define GL_BLEND_EQUATION_RGB GL_BLEND_EQUATION
|
||||
@@ -119,7 +119,90 @@ typedef char GLchar;
|
||||
#define GL_STENCIL_BACK_REF 0x8CA3
|
||||
#define GL_STENCIL_BACK_VALUE_MASK 0x8CA4
|
||||
#define GL_STENCIL_BACK_WRITEMASK 0x8CA5
|
||||
#endif //]
|
||||
#endif
|
||||
|
||||
#ifndef GL_VERSION_2_1
|
||||
#define GL_VERSION_2_1 1
|
||||
#define GL_CURRENT_RASTER_SECONDARY_COLOR 0x845F
|
||||
#define GL_PIXEL_PACK_BUFFER 0x88EB
|
||||
#define GL_PIXEL_UNPACK_BUFFER 0x88EC
|
||||
#define GL_PIXEL_PACK_BUFFER_BINDING 0x88ED
|
||||
#define GL_PIXEL_UNPACK_BUFFER_BINDING 0x88EF
|
||||
#define GL_FLOAT_MAT2x3 0x8B65
|
||||
#define GL_FLOAT_MAT2x4 0x8B66
|
||||
#define GL_FLOAT_MAT3x2 0x8B67
|
||||
#define GL_FLOAT_MAT3x4 0x8B68
|
||||
#define GL_FLOAT_MAT4x2 0x8B69
|
||||
#define GL_FLOAT_MAT4x3 0x8B6A
|
||||
#define GL_SRGB 0x8C40
|
||||
#define GL_SRGB8 0x8C41
|
||||
#define GL_SRGB_ALPHA 0x8C42
|
||||
#define GL_SRGB8_ALPHA8 0x8C43
|
||||
#define GL_SLUMINANCE_ALPHA 0x8C44
|
||||
#define GL_SLUMINANCE8_ALPHA8 0x8C45
|
||||
#define GL_SLUMINANCE 0x8C46
|
||||
#define GL_SLUMINANCE8 0x8C47
|
||||
#define GL_COMPRESSED_SRGB 0x8C48
|
||||
#define GL_COMPRESSED_SRGB_ALPHA 0x8C49
|
||||
#define GL_COMPRESSED_SLUMINANCE 0x8C4A
|
||||
#define GL_COMPRESSED_SLUMINANCE_ALPHA 0x8C4B
|
||||
#endif
|
||||
|
||||
// EXT_geometry_shader4
|
||||
#ifndef GL_GEOMETRY_SHADER_EXT
|
||||
#define GL_GEOMETRY_SHADER_EXT 0x8DD9
|
||||
#define GL_GEOMETRY_VERTICES_OUT_EXT 0x8DDA
|
||||
#define GL_GEOMETRY_INPUT_TYPE_EXT 0x8DDB
|
||||
#define GL_GEOMETRY_OUTPUT_TYPE_EXT 0x8DDC
|
||||
#define GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_EXT 0x8C29
|
||||
#define GL_MAX_GEOMETRY_VARYING_COMPONENTS_EXT 0x8DDD
|
||||
#define GL_MAX_VERTEX_VARYING_COMPONENTS_EXT 0x8DDE
|
||||
#define GL_MAX_VARYING_COMPONENTS_EXT 0x8B4B
|
||||
#define GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_EXT 0x8DDF
|
||||
#define GL_MAX_GEOMETRY_OUTPUT_VERTICES_EXT 0x8DE0
|
||||
#define GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_EXT 0x8DE1
|
||||
#define GL_LINES_ADJACENCY_EXT 0x000A
|
||||
#define GL_LINE_STRIP_ADJACENCY_EXT 0x000B
|
||||
#define GL_TRIANGLES_ADJACENCY_EXT 0x000C
|
||||
#define GL_TRIANGLE_STRIP_ADJACENCY_EXT 0x000D
|
||||
#define GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT 0x8DA8
|
||||
#define GL_FRAMEBUFFER_INCOMPLETE_LAYER_COUNT_EXT 0x8DA9
|
||||
#define GL_FRAMEBUFFER_ATTACHMENT_LAYERED_EXT 0x8DA7
|
||||
#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER_EXT 0x8CD4
|
||||
#define GL_PROGRAM_POINT_SIZE_EXT 0x8642
|
||||
#endif
|
||||
|
||||
// EXT_gpu_shader4
|
||||
#ifndef GL_INT_SAMPLER_2D_EXT
|
||||
#define GL_SAMPLER_1D_ARRAY_EXT 0x8DC0
|
||||
#define GL_SAMPLER_2D_ARRAY_EXT 0x8DC1
|
||||
#define GL_SAMPLER_BUFFER_EXT 0x8DC2
|
||||
#define GL_SAMPLER_1D_ARRAY_SHADOW_EXT 0x8DC3
|
||||
#define GL_SAMPLER_2D_ARRAY_SHADOW_EXT 0x8DC4
|
||||
#define GL_SAMPLER_CUBE_SHADOW_EXT 0x8DC5
|
||||
#define GL_UNSIGNED_INT_VEC2_EXT 0x8DC6
|
||||
#define GL_UNSIGNED_INT_VEC3_EXT 0x8DC7
|
||||
#define GL_UNSIGNED_INT_VEC4_EXT 0x8DC8
|
||||
#define GL_INT_SAMPLER_1D_EXT 0x8DC9
|
||||
#define GL_INT_SAMPLER_2D_EXT 0x8DCA
|
||||
#define GL_INT_SAMPLER_3D_EXT 0x8DCB
|
||||
#define GL_INT_SAMPLER_CUBE_EXT 0x8DCC
|
||||
#define GL_INT_SAMPLER_2D_RECT_EXT 0x8DCD
|
||||
#define GL_INT_SAMPLER_1D_ARRAY_EXT 0x8DCE
|
||||
#define GL_INT_SAMPLER_2D_ARRAY_EXT 0x8DCF
|
||||
#define GL_INT_SAMPLER_BUFFER_EXT 0x8DD0
|
||||
#define GL_UNSIGNED_INT_SAMPLER_1D_EXT 0x8DD1
|
||||
#define GL_UNSIGNED_INT_SAMPLER_2D_EXT 0x8DD2
|
||||
#define GL_UNSIGNED_INT_SAMPLER_3D_EXT 0x8DD3
|
||||
#define GL_UNSIGNED_INT_SAMPLER_CUBE_EXT 0x8DD4
|
||||
#define GL_UNSIGNED_INT_SAMPLER_2D_RECT_EXT 0x8DD5
|
||||
#define GL_UNSIGNED_INT_SAMPLER_1D_ARRAY_EXT 0x8DD6
|
||||
#define GL_UNSIGNED_INT_SAMPLER_2D_ARRAY_EXT 0x8DD7
|
||||
#define GL_UNSIGNED_INT_SAMPLER_BUFFER_EXT 0x8DD8
|
||||
#define GL_MIN_PROGRAM_TEXEL_OFFSET_EXT 0x8904
|
||||
#define GL_MAX_PROGRAM_TEXEL_OFFSET_EXT 0x8905
|
||||
#endif
|
||||
|
||||
|
||||
namespace osg {
|
||||
|
||||
@@ -151,6 +234,12 @@ class OSG_EXPORT GL2Extensions : public osg::Referenced
|
||||
void setLanguage100Supported(bool flag) { _isLanguage100Supported = flag; }
|
||||
bool isLanguage100Supported() const { return _isLanguage100Supported; }
|
||||
|
||||
void setGeometryShader4Supported(bool flag) { _isGeometryShader4Supported = flag; }
|
||||
bool isGeometryShader4Supported() const { return _isGeometryShader4Supported; }
|
||||
|
||||
void setGpuShader4Supported(bool flag) { _isGpuShader4Supported = flag; }
|
||||
bool isGpuShader4Supported() const { return _isGpuShader4Supported; }
|
||||
|
||||
/** Function to call to get the extension of a specified context.
|
||||
* If the Exentsion object for that context has not yet been created then
|
||||
* and the 'createIfNotInitalized' flag been set to false then returns NULL.
|
||||
@@ -266,9 +355,32 @@ class OSG_EXPORT GL2Extensions : public osg::Referenced
|
||||
bool getAttribLocation( const char* attribName, GLuint& slot ) const;
|
||||
bool getFragDataLocation( const char* fragDataName, GLuint& slot) const;
|
||||
|
||||
//EXT_gpu_shader4 to support frag data binding
|
||||
void glBindFragDataLocation(GLuint program, GLuint colorNumber, const GLchar *name) const;
|
||||
GLint glGetFragDataLocation(GLuint program, const GLchar *name) const;
|
||||
// GL 2.1
|
||||
void glUniformMatrix2x3fv( GLint location, GLsizei count, GLboolean transpose, const GLfloat* value ) const;
|
||||
void glUniformMatrix3x2fv( GLint location, GLsizei count, GLboolean transpose, const GLfloat* value ) const;
|
||||
void glUniformMatrix2x4fv( GLint location, GLsizei count, GLboolean transpose, const GLfloat* value ) const;
|
||||
void glUniformMatrix4x2fv( GLint location, GLsizei count, GLboolean transpose, const GLfloat* value ) const;
|
||||
void glUniformMatrix3x4fv( GLint location, GLsizei count, GLboolean transpose, const GLfloat* value ) const;
|
||||
void glUniformMatrix4x3fv( GLint location, GLsizei count, GLboolean transpose, const GLfloat* value ) const;
|
||||
|
||||
// EXT_geometry_shader4
|
||||
void glProgramParameteri( GLuint program, GLenum pname, GLint value ) const;
|
||||
void glFramebufferTexture( GLenum target, GLenum attachment, GLuint texture, GLint level ) const;
|
||||
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;
|
||||
|
||||
// EXT_gpu_shader4
|
||||
void glGetUniformuiv( GLuint program, GLint location, GLuint *params ) const;
|
||||
void glBindFragDataLocation( GLuint program, GLuint color, const GLchar *name ) const;
|
||||
GLint glGetFragDataLocation( GLuint program, const GLchar *name ) const;
|
||||
void glUniform1ui( GLint location, GLuint v0 ) const;
|
||||
void glUniform2ui( GLint location, GLuint v0, GLuint v1 ) const;
|
||||
void glUniform3ui( GLint location, GLuint v0, GLuint v1, GLuint v2 ) const;
|
||||
void glUniform4ui( GLint location, GLuint v0, GLuint v1, GLuint v2, GLuint v3 ) const;
|
||||
void glUniform1uiv( GLint location, GLsizei count, const GLuint *value ) const;
|
||||
void glUniform2uiv( GLint location, GLsizei count, const GLuint *value ) const;
|
||||
void glUniform3uiv( GLint location, GLsizei count, const GLuint *value ) const;
|
||||
void glUniform4uiv( GLint location, GLsizei count, const GLuint *value ) const;
|
||||
|
||||
protected:
|
||||
~GL2Extensions() {}
|
||||
@@ -280,6 +392,8 @@ class OSG_EXPORT GL2Extensions : public osg::Referenced
|
||||
bool _isVertexShaderSupported;
|
||||
bool _isFragmentShaderSupported;
|
||||
bool _isLanguage100Supported;
|
||||
bool _isGeometryShader4Supported;
|
||||
bool _isGpuShader4Supported;
|
||||
|
||||
void* _glBlendEquationSeparate;
|
||||
void* _glDrawBuffers;
|
||||
@@ -380,8 +494,32 @@ class OSG_EXPORT GL2Extensions : public osg::Referenced
|
||||
void* _glDeleteObjectARB;
|
||||
void* _glGetHandleARB;
|
||||
|
||||
// GL 2.1
|
||||
void* _glUniformMatrix2x3fv;
|
||||
void* _glUniformMatrix3x2fv;
|
||||
void* _glUniformMatrix2x4fv;
|
||||
void* _glUniformMatrix4x2fv;
|
||||
void* _glUniformMatrix3x4fv;
|
||||
void* _glUniformMatrix4x3fv;
|
||||
|
||||
// EXT_geometry_shader4
|
||||
void* _glProgramParameteri;
|
||||
void* _glFramebufferTexture;
|
||||
void* _glFramebufferTextureLayer;
|
||||
void* _glFramebufferTextureFace;
|
||||
|
||||
// EXT_gpu_shader4
|
||||
void* _glGetUniformuiv;
|
||||
void* _glBindFragDataLocation;
|
||||
void* _glGetFragDataLocation;
|
||||
void* _glUniform1ui;
|
||||
void* _glUniform2ui;
|
||||
void* _glUniform3ui;
|
||||
void* _glUniform4ui;
|
||||
void* _glUniform1uiv;
|
||||
void* _glUniform2uiv;
|
||||
void* _glUniform3uiv;
|
||||
void* _glUniform4uiv;
|
||||
};
|
||||
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user