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/*
* Mesa 3-D graphics library
*
* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file program.c
* Vertex and fragment program support functions.
* \author Brian Paul
*/
/**
* \mainpage Mesa vertex and fragment program module
*
* This module or directory contains most of the code for vertex and
* fragment programs and shaders, including state management, parsers,
* and (some) software routines for executing programs
*/
#ifndef PROGRAM_H
#define PROGRAM_H
#include "prog_parameter.h"
#ifdef __cplusplus
extern "C" {
#endif
extern struct gl_program _mesa_DummyProgram;
extern void
_mesa_init_program(struct gl_context *ctx);
extern void
_mesa_free_program_data(struct gl_context *ctx);
extern void
_mesa_update_default_objects_program(struct gl_context *ctx);
extern void
_mesa_set_program_error(struct gl_context *ctx, GLint pos, const char *string);
extern struct gl_program *
_mesa_init_gl_program(struct gl_program *prog, gl_shader_stage stage,
GLuint id, bool is_arb_asm);
extern struct gl_program *
_mesa_new_program(struct gl_context *ctx, gl_shader_stage stage, GLuint id,
bool is_arb_asm);
extern void
_mesa_delete_program(struct gl_context *ctx, struct gl_program *prog);
extern struct gl_program *
_mesa_lookup_program(struct gl_context *ctx, GLuint id);
extern void
_mesa_reference_program_(struct gl_context *ctx,
struct gl_program **ptr,
struct gl_program *prog);
static inline void
_mesa_reference_program(struct gl_context *ctx,
struct gl_program **ptr,
struct gl_program *prog)
{
if (*ptr != prog)
_mesa_reference_program_(ctx, ptr, prog);
}
extern GLboolean
_mesa_insert_instructions(struct gl_program *prog, GLuint start, GLuint count);
extern GLboolean
_mesa_delete_instructions(struct gl_program *prog, GLuint start, GLuint count,
void *mem_ctx);
extern void
_mesa_find_used_registers(const struct gl_program *prog,
gl_register_file file,
GLboolean used[], GLuint usedSize);
extern GLint
_mesa_find_free_register(const GLboolean used[],
GLuint maxRegs, GLuint firstReg);
extern GLint
_mesa_get_min_invocations_per_fragment(struct gl_context *ctx,
const struct gl_program *prog);
static inline GLuint
_mesa_program_enum_to_shader_stage(GLenum v)
{
switch (v) {
case GL_VERTEX_PROGRAM_ARB:
return MESA_SHADER_VERTEX;
case GL_FRAGMENT_PROGRAM_ARB:
return MESA_SHADER_FRAGMENT;
case GL_FRAGMENT_SHADER_ATI:
return MESA_SHADER_FRAGMENT;
case GL_GEOMETRY_PROGRAM_NV:
return MESA_SHADER_GEOMETRY;
case GL_TESS_CONTROL_PROGRAM_NV:
return MESA_SHADER_TESS_CTRL;
case GL_TESS_EVALUATION_PROGRAM_NV:
return MESA_SHADER_TESS_EVAL;
case GL_COMPUTE_PROGRAM_NV:
return MESA_SHADER_COMPUTE;
default:
assert(0);
return ~0;
}
}
static inline GLenum
_mesa_shader_stage_to_program(unsigned stage)
{
switch (stage) {
case MESA_SHADER_VERTEX:
return GL_VERTEX_PROGRAM_ARB;
case MESA_SHADER_FRAGMENT:
return GL_FRAGMENT_PROGRAM_ARB;
case MESA_SHADER_GEOMETRY:
return GL_GEOMETRY_PROGRAM_NV;
case MESA_SHADER_TESS_CTRL:
return GL_TESS_CONTROL_PROGRAM_NV;
case MESA_SHADER_TESS_EVAL:
return GL_TESS_EVALUATION_PROGRAM_NV;
case MESA_SHADER_COMPUTE:
return GL_COMPUTE_PROGRAM_NV;
}
assert(!"Unexpected shader stage in _mesa_shader_stage_to_program");
return GL_VERTEX_PROGRAM_ARB;
}
GLbitfield
gl_external_samplers(const struct gl_program *prog);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* PROGRAM_H */