7883574d28
"updates for GLSL core integration: Code compiles and runs on win32. Basic functionality of Program and Shader in place. Program derived from StateAttribute. Uniform value propagation is not yet functional (in development) Includes some patches by Nathan Cournia. includes example testcase to demo use of new classes."
303 lines
10 KiB
C++
303 lines
10 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2005 Robert Osfield
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* Copyright (C) 2003-2005 3Dlabs Inc. Ltd.
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*
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* This application is open source and may be redistributed and/or modified
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* freely and without restriction, both in commericial and non commericial
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* applications, as long as this copyright notice is maintained.
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*
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* This application is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/* file: include/osg/Uniform
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* author: Mike Weiblen 2005-03-23
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*/
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// NOTICE: This code is CLOSED during construction and/or renovation!
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// It is in active development, so DO NOT yet use in application code.
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// This notice will be removed when the code is open for business.
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// For development plan and status see:
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// http://www.openscenegraph.org/index.php?page=Community.DevelopmentWork
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#ifndef OSG_UNIFORM
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#define OSG_UNIFORM 1
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#include <osg/ref_ptr>
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#include <osg/Vec2>
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#include <osg/Vec3>
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#include <osg/Vec4>
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#include <osg/Matrix>
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#include <osg/GL>
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#include <string>
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#ifndef GL_VERSION_2_0
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#define GL_VERSION_2_0 1
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#define GL_BLEND_EQUATION_RGB GL_BLEND_EQUATION
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#define GL_VERTEX_ATTRIB_ARRAY_ENABLED 0x8622
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#define GL_VERTEX_ATTRIB_ARRAY_SIZE 0x8623
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#define GL_VERTEX_ATTRIB_ARRAY_STRIDE 0x8624
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#define GL_VERTEX_ATTRIB_ARRAY_TYPE 0x8625
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#define GL_CURRENT_VERTEX_ATTRIB 0x8626
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#define GL_VERTEX_PROGRAM_POINT_SIZE 0x8642
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#define GL_VERTEX_PROGRAM_TWO_SIDE 0x8643
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#define GL_VERTEX_ATTRIB_ARRAY_POINTER 0x8645
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#define GL_STENCIL_BACK_FUNC 0x8800
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#define GL_STENCIL_BACK_FAIL 0x8801
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#define GL_STENCIL_BACK_PASS_DEPTH_FAIL 0x8802
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#define GL_STENCIL_BACK_PASS_DEPTH_PASS 0x8803
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#define GL_MAX_DRAW_BUFFERS 0x8824
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#define GL_DRAW_BUFFER0 0x8825
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#define GL_DRAW_BUFFER1 0x8826
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#define GL_DRAW_BUFFER2 0x8827
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#define GL_DRAW_BUFFER3 0x8828
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#define GL_DRAW_BUFFER4 0x8829
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#define GL_DRAW_BUFFER5 0x882A
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#define GL_DRAW_BUFFER6 0x882B
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#define GL_DRAW_BUFFER7 0x882C
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#define GL_DRAW_BUFFER8 0x882D
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#define GL_DRAW_BUFFER9 0x882E
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#define GL_DRAW_BUFFER10 0x882F
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#define GL_DRAW_BUFFER11 0x8830
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#define GL_DRAW_BUFFER12 0x8831
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#define GL_DRAW_BUFFER13 0x8832
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#define GL_DRAW_BUFFER14 0x8833
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#define GL_DRAW_BUFFER15 0x8834
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#define GL_BLEND_EQUATION_ALPHA 0x883D
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#define GL_POINT_SPRITE 0x8861
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#define GL_COORD_REPLACE 0x8862
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#define GL_MAX_VERTEX_ATTRIBS 0x8869
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#define GL_VERTEX_ATTRIB_ARRAY_NORMALIZED 0x886A
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#define GL_MAX_TEXTURE_COORDS 0x8871
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#define GL_MAX_TEXTURE_IMAGE_UNITS 0x8872
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#define GL_FRAGMENT_SHADER 0x8B30
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#define GL_VERTEX_SHADER 0x8B31
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#define GL_MAX_FRAGMENT_UNIFORM_COMPONENTS 0x8B49
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#define GL_MAX_VERTEX_UNIFORM_COMPONENTS 0x8B4A
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#define GL_MAX_VARYING_FLOATS 0x8B4B
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#define GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS 0x8B4C
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#define GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS 0x8B4D
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#define GL_SHADER_TYPE 0x8B4F
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#define GL_FLOAT_VEC2 0x8B50
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#define GL_FLOAT_VEC3 0x8B51
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#define GL_FLOAT_VEC4 0x8B52
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#define GL_INT_VEC2 0x8B53
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#define GL_INT_VEC3 0x8B54
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#define GL_INT_VEC4 0x8B55
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#define GL_BOOL 0x8B56
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#define GL_BOOL_VEC2 0x8B57
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#define GL_BOOL_VEC3 0x8B58
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#define GL_BOOL_VEC4 0x8B59
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#define GL_FLOAT_MAT2 0x8B5A
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#define GL_FLOAT_MAT3 0x8B5B
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#define GL_FLOAT_MAT4 0x8B5C
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#define GL_SAMPLER_1D 0x8B5D
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#define GL_SAMPLER_2D 0x8B5E
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#define GL_SAMPLER_3D 0x8B5F
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#define GL_SAMPLER_CUBE 0x8B60
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#define GL_SAMPLER_1D_SHADOW 0x8B61
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#define GL_SAMPLER_2D_SHADOW 0x8B62
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#define GL_DELETE_STATUS 0x8B80
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#define GL_COMPILE_STATUS 0x8B81
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#define GL_LINK_STATUS 0x8B82
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#define GL_VALIDATE_STATUS 0x8B83
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#define GL_INFO_LOG_LENGTH 0x8B84
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#define GL_ATTACHED_SHADERS 0x8B85
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#define GL_ACTIVE_UNIFORMS 0x8B86
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#define GL_ACTIVE_UNIFORM_MAX_LENGTH 0x8B87
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#define GL_SHADER_SOURCE_LENGTH 0x8B88
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#define GL_ACTIVE_ATTRIBUTES 0x8B89
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#define GL_ACTIVE_ATTRIBUTE_MAX_LENGTH 0x8B8A
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#define GL_FRAGMENT_SHADER_DERIVATIVE_HINT 0x8B8B
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#define GL_SHADING_LANGUAGE_VERSION 0x8B8C
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#define GL_CURRENT_PROGRAM 0x8B8D
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#define GL_POINT_SPRITE_COORD_ORIGIN 0x8CA0
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#define GL_LOWER_LEFT 0x8CA1
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#define GL_UPPER_LEFT 0x8CA2
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#define GL_STENCIL_BACK_REF 0x8CA3
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#define GL_STENCIL_BACK_VALUE_MASK 0x8CA4
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#define GL_STENCIL_BACK_WRITEMASK 0x8CA5
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typedef char GLchar;
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#endif
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namespace osg {
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///////////////////////////////////////////////////////////////////////////
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/** Uniform encapsulates glUniform values */
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class SG_EXPORT Uniform : public Object
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{
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public:
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class Value
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{
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public:
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enum Type {
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FLOAT = GL_FLOAT,
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FLOAT_VEC2 = GL_FLOAT_VEC2,
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FLOAT_VEC3 = GL_FLOAT_VEC3,
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FLOAT_VEC4 = GL_FLOAT_VEC4,
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INT = GL_INT,
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INT_VEC2 = GL_INT_VEC2,
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INT_VEC3 = GL_INT_VEC3,
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INT_VEC4 = GL_INT_VEC4,
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BOOL = GL_BOOL,
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BOOL_VEC2 = GL_BOOL_VEC2,
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BOOL_VEC3 = GL_BOOL_VEC3,
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BOOL_VEC4 = GL_BOOL_VEC4,
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FLOAT_MAT2 = GL_FLOAT_MAT2,
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FLOAT_MAT3 = GL_FLOAT_MAT3,
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FLOAT_MAT4 = GL_FLOAT_MAT4,
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SAMPLER_1D = GL_SAMPLER_1D,
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SAMPLER_2D = GL_SAMPLER_2D,
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SAMPLER_3D = GL_SAMPLER_3D,
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SAMPLER_CUBE = GL_SAMPLER_CUBE,
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SAMPLER_1D_SHADOW = GL_SAMPLER_1D_SHADOW,
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SAMPLER_2D_SHADOW = GL_SAMPLER_2D_SHADOW,
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UNDEFINED = -1,
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};
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Value( const char* name, Type type );
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Value( const Value& rhs );
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/** Get the name of glUniform. */
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const std::string& getName() const { return _name; }
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/** Get the type of glUniform as enum. */
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const Type getType() const { return _type; }
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/** Return the name of a type as string. */
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static const char* getTypename(Type t);
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/** Does this Value contain real data? */
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bool isValid() const { return _isValid; }
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/** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. */
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int compare(const Value& rhs) const;
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bool isCompatibleType( Type t ) const;
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/** assignment */
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void set( float f );
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void set( const osg::Vec2& v2 );
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void set( const osg::Vec3& v3 );
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void set( const osg::Vec4& v4 );
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//TODO void set( const osg::Matrix2& m2 );
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//TODO void set( const osg::Matrix3& m3 );
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void set( const osg::Matrix& m4 );
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void set( int i );
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void set( int i0, int i1 );
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void set( int i0, int i1, int i2 );
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void set( int i0, int i1, int i2, int i3 );
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void set( bool b );
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void set( bool b0, bool b1 );
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void set( bool b0, bool b1, bool b2 );
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void set( bool b0, bool b1, bool b2, bool b3 );
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protected:
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/** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. */
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int compareData(const Value& rhs) const;
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void copyData(const Value& rhs);
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protected:
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const std::string _name;
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const Type _type;
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bool _isValid; // is _data valid?
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union {
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GLfloat f1; // float
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GLfloat f2[2]; // vec2
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GLfloat f3[3]; // vec3
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GLfloat f4[4]; // vec4, mat2
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GLfloat f9[9]; // mat3
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GLfloat f16[16]; // mat4
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GLint i1; // int, bool, sampler*
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GLint i2[2]; // ivec2, bvec2
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GLint i3[3]; // ivec3, bvec3
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GLint i4[4]; // ivec4, bvec4
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} _data;
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private:
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Value(); // disallowed
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};
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public:
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Uniform();
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Uniform( const char* name, Value::Type type );
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/** convenient construction w/ assignment */
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explicit Uniform( const char* name, float f );
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explicit Uniform( const char* name, int i );
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explicit Uniform( const char* name, bool b );
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Uniform( const char* name, const osg::Vec2& v2 );
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Uniform( const char* name, const osg::Vec3& v3 );
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Uniform( const char* name, const osg::Vec4& v4 );
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//TODO Uniform( const char* name, const osg::Matrix2& m2 );
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//TODO Uniform( const char* name, const osg::Matrix3& m3 );
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Uniform( const char* name, const osg::Matrix& m4 );
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Uniform( const char* name, int i0, int i1 );
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Uniform( const char* name, int i0, int i1, int i2 );
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Uniform( const char* name, int i0, int i1, int i2, int i3 );
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Uniform( const char* name, bool b0, bool b1 );
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Uniform( const char* name, bool b0, bool b1, bool b2 );
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Uniform( const char* name, bool b0, bool b1, bool b2, bool b3 );
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/** Copy constructor using CopyOp to manage deep vs shallow copy. */
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Uniform(const Uniform& gu,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
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META_Object(osg, Uniform);
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/** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. */
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virtual int compare(const Uniform& rhs) const
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{
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return _value.compare( rhs._value );
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}
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bool operator < (const Uniform& rhs) const
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{
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if (_value.getName()<rhs._value.getName()) return true;
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return false;
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}
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const std::string& getName() const { return _value.getName(); }
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/** assignment */
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bool set( float f );
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bool set( int i );
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bool set( bool b );
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bool set( const osg::Vec2& v2 );
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bool set( const osg::Vec3& v3 );
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bool set( const osg::Vec4& v4 );
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//TODO bool set( const osg::Matrix2& m2 );
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//TODO bool set( const osg::Matrix3& m3 );
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bool set( const osg::Matrix& m4 );
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bool set( int i0, int i1 );
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bool set( int i0, int i1, int i2 );
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bool set( int i0, int i1, int i2, int i3 );
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bool set( bool b0, bool b1 );
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bool set( bool b0, bool b1, bool b2 );
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bool set( bool b0, bool b1, bool b2, bool b3 );
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protected:
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virtual ~Uniform() {}
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bool isCompatibleType( Value::Type t ) const;
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protected:
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Value _value;
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private:
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Uniform& operator=(const Uniform&); // disallowed
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};
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}
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#endif
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/*EOF*/
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