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      1 /*
      2  * Mesa 3-D graphics library
      3  *
      4  * Copyright (C) 2010  VMware, Inc.  All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included
     14  * in all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
     20  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     22  */
     23 
     24 
     25 #ifndef TRANSFORM_FEEDBACK_H
     26 #define TRANSFORM_FEEDBACK_H
     27 
     28 #include "compiler.h"
     29 #include "glheader.h"
     30 #include "mfeatures.h"
     31 
     32 struct _glapi_table;
     33 struct dd_function_table;
     34 struct gl_context;
     35 
     36 extern void
     37 _mesa_init_transform_feedback(struct gl_context *ctx);
     38 
     39 extern void
     40 _mesa_free_transform_feedback(struct gl_context *ctx);
     41 
     42 #if FEATURE_EXT_transform_feedback
     43 
     44 extern GLboolean
     45 _mesa_validate_transform_feedback_buffers(struct gl_context *ctx);
     46 
     47 
     48 extern void
     49 _mesa_init_transform_feedback_functions(struct dd_function_table *driver);
     50 
     51 extern void
     52 _mesa_init_transform_feedback_dispatch(struct _glapi_table *disp);
     53 
     54 
     55 /*** GL_EXT_transform_feedback ***/
     56 
     57 extern void GLAPIENTRY
     58 _mesa_BeginTransformFeedback(GLenum mode);
     59 
     60 extern void GLAPIENTRY
     61 _mesa_EndTransformFeedback(void);
     62 
     63 extern void
     64 _mesa_bind_buffer_range_transform_feedback(struct gl_context *ctx,
     65 					   GLuint index,
     66 					   struct gl_buffer_object *bufObj,
     67 					   GLintptr offset,
     68 					   GLsizeiptr size);
     69 
     70 extern void
     71 _mesa_bind_buffer_base_transform_feedback(struct gl_context *ctx,
     72 					  GLuint index,
     73 					  struct gl_buffer_object *bufObj);
     74 
     75 extern void GLAPIENTRY
     76 _mesa_BindBufferOffsetEXT(GLenum target, GLuint index, GLuint buffer,
     77                           GLintptr offset);
     78 
     79 extern void GLAPIENTRY
     80 _mesa_TransformFeedbackVaryings(GLuint program, GLsizei count,
     81                                 const GLchar **varyings, GLenum bufferMode);
     82 
     83 extern void GLAPIENTRY
     84 _mesa_GetTransformFeedbackVarying(GLuint program, GLuint index,
     85                                   GLsizei bufSize, GLsizei *length,
     86                                   GLsizei *size, GLenum *type, GLchar *name);
     87 
     88 
     89 
     90 /*** GL_ARB_transform_feedback2 ***/
     91 
     92 struct gl_transform_feedback_object *
     93 _mesa_lookup_transform_feedback_object(struct gl_context *ctx, GLuint name);
     94 
     95 extern void GLAPIENTRY
     96 _mesa_GenTransformFeedbacks(GLsizei n, GLuint *names);
     97 
     98 extern GLboolean GLAPIENTRY
     99 _mesa_IsTransformFeedback(GLuint name);
    100 
    101 extern void GLAPIENTRY
    102 _mesa_BindTransformFeedback(GLenum target, GLuint name);
    103 
    104 extern void GLAPIENTRY
    105 _mesa_DeleteTransformFeedbacks(GLsizei n, const GLuint *names);
    106 
    107 extern void GLAPIENTRY
    108 _mesa_PauseTransformFeedback(void);
    109 
    110 extern void GLAPIENTRY
    111 _mesa_ResumeTransformFeedback(void);
    112 
    113 #else /* FEATURE_EXT_transform_feedback */
    114 
    115 static inline GLboolean
    116 _mesa_validate_primitive_mode(struct gl_context *ctx, GLenum mode)
    117 {
    118    return GL_TRUE;
    119 }
    120 
    121 static inline GLboolean
    122 _mesa_validate_transform_feedback_buffers(struct gl_context *ctx)
    123 {
    124    return GL_TRUE;
    125 }
    126 
    127 static inline void
    128 _mesa_init_transform_feedback_functions(struct dd_function_table *driver)
    129 {
    130 }
    131 
    132 static inline void
    133 _mesa_init_transform_feedback_dispatch(struct _glapi_table *disp)
    134 {
    135 }
    136 
    137 #endif /* FEATURE_EXT_transform_feedback */
    138 
    139 #endif /* TRANSFORM_FEEDBACK_H */
    140