/**************************************************************************
*
* Copyright 2003 VMware, Inc.
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell <keithw@vmware.com>
*/
#ifndef ST_PROGRAM_H
#define ST_PROGRAM_H
#include "main/mtypes.h"
#include "program/program.h"
#include "pipe/p_state.h"
#include "st_context.h"
#include "st_glsl_to_tgsi.h"
#ifdef __cplusplus
extern "C" {
#endif
#define ST_DOUBLE_ATTRIB_PLACEHOLDER 0xffffffff
/** Fragment program variant key */
struct st_fp_variant_key
{
struct st_context *st; /**< variants are per-context */
/** for glBitmap */
GLuint bitmap:1; /**< glBitmap variant? */
/** for glDrawPixels */
GLuint drawpixels:1; /**< glDrawPixels variant */
GLuint scaleAndBias:1; /**< glDrawPixels w/ scale and/or bias? */
GLuint pixelMaps:1; /**< glDrawPixels w/ pixel lookup map? */
GLuint drawpixels_z:1; /**< glDrawPixels(GL_DEPTH) */
GLuint drawpixels_stencil:1; /**< glDrawPixels(GL_STENCIL) */
/** for ARB_color_buffer_float */
GLuint clamp_color:1;
/** for ARB_sample_shading */
GLuint persample_shading:1;
};
/**
* Variant of a fragment program.
*/
struct st_fp_variant
{
/** Parameters which generated this version of fragment program */
struct st_fp_variant_key key;
struct pipe_shader_state tgsi;
/** Driver's compiled shader */
void *driver_shader;
/** For glBitmap variants */
struct gl_program_parameter_list *parameters;
uint bitmap_sampler;
/** next in linked list */
struct st_fp_variant *next;
};
/**
* Derived from Mesa gl_fragment_program:
*/
struct st_fragment_program
{
struct gl_fragment_program Base;
struct glsl_to_tgsi_visitor* glsl_to_tgsi;
struct st_fp_variant *variants;
};
/** Vertex program variant key */
struct st_vp_variant_key
{
struct st_context *st; /**< variants are per-context */
boolean passthrough_edgeflags;
/** for ARB_color_buffer_float */
boolean clamp_color;
};
/**
* This represents a vertex program, especially translated to match
* the inputs of a particular fragment shader.
*/
struct st_vp_variant
{
/* Parameters which generated this translated version of a vertex
* shader:
*/
struct st_vp_variant_key key;
/**
* TGSI tokens (to later generate a 'draw' module shader for
* selection/feedback/rasterpos)
*/
struct pipe_shader_state tgsi;
/** Driver's compiled shader */
void *driver_shader;
/** For using our private draw module (glRasterPos) */
struct draw_vertex_shader *draw_shader;
/** Next in linked list */
struct st_vp_variant *next;
/** similar to that in st_vertex_program, but with edgeflags info too */
GLuint num_inputs;
};
/**
* Derived from Mesa gl_fragment_program:
*/
struct st_vertex_program
{
struct gl_vertex_program Base; /**< The Mesa vertex program */
struct glsl_to_tgsi_visitor* glsl_to_tgsi;
/** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
GLuint input_to_index[VERT_ATTRIB_MAX];
/** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
GLuint num_inputs;
/** Maps VARYING_SLOT_x to slot */
GLuint result_to_output[VARYING_SLOT_MAX];
ubyte output_semantic_name[VARYING_SLOT_MAX];
ubyte output_semantic_index[VARYING_SLOT_MAX];
GLuint num_outputs;
/** List of translated variants of this vertex program.
*/
struct st_vp_variant *variants;
};
/** Geometry program variant key */
struct st_gp_variant_key
{
struct st_context *st; /**< variants are per-context */
/* no other fields yet */
};
/**
* Geometry program variant.
*/
struct st_gp_variant
{
/* Parameters which generated this translated version of a vertex */
struct st_gp_variant_key key;
void *driver_shader;
struct st_gp_variant *next;
};
/**
* Derived from Mesa gl_geometry_program:
*/
struct st_geometry_program
{
struct gl_geometry_program Base; /**< The Mesa geometry program */
struct glsl_to_tgsi_visitor* glsl_to_tgsi;
struct st_gp_variant *variants;
};
static inline struct st_fragment_program *
st_fragment_program( struct gl_fragment_program *fp )
{
return (struct st_fragment_program *)fp;
}
static inline struct st_vertex_program *
st_vertex_program( struct gl_vertex_program *vp )
{
return (struct st_vertex_program *)vp;
}
static inline struct st_geometry_program *
st_geometry_program( struct gl_geometry_program *gp )
{
return (struct st_geometry_program *)gp;
}
static inline void
st_reference_vertprog(struct st_context *st,
struct st_vertex_program **ptr,
struct st_vertex_program *prog)
{
_mesa_reference_program(st->ctx,
(struct gl_program **) ptr,
(struct gl_program *) prog);
}
static inline void
st_reference_geomprog(struct st_context *st,
struct st_geometry_program **ptr,
struct st_geometry_program *prog)
{
_mesa_reference_program(st->ctx,
(struct gl_program **) ptr,
(struct gl_program *) prog);
}
static inline void
st_reference_fragprog(struct st_context *st,
struct st_fragment_program **ptr,
struct st_fragment_program *prog)
{
_mesa_reference_program(st->ctx,
(struct gl_program **) ptr,
(struct gl_program *) prog);
}
/**
* This defines mapping from Mesa VARYING_SLOTs to TGSI GENERIC slots.
*/
static inline unsigned
st_get_generic_varying_index(struct st_context *st, GLuint attr)
{
if (attr >= VARYING_SLOT_VAR0) {
if (st->needs_texcoord_semantic)
return attr - VARYING_SLOT_VAR0;
else
return 9 + (attr - VARYING_SLOT_VAR0);
}
if (attr == VARYING_SLOT_PNTC) {
assert(!st->needs_texcoord_semantic);
return 8;
}
if (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) {
assert(!st->needs_texcoord_semantic);
return attr - VARYING_SLOT_TEX0;
}
assert(0);
return 0;
}
extern struct st_vp_variant *
st_get_vp_variant(struct st_context *st,
struct st_vertex_program *stvp,
const struct st_vp_variant_key *key);
extern struct st_fp_variant *
st_get_fp_variant(struct st_context *st,
struct st_fragment_program *stfp,
const struct st_fp_variant_key *key);
extern struct st_gp_variant *
st_get_gp_variant(struct st_context *st,
struct st_geometry_program *stgp,
const struct st_gp_variant_key *key);
extern void
st_prepare_vertex_program(struct gl_context *ctx,
struct st_vertex_program *stvp);
extern GLboolean
st_prepare_fragment_program(struct gl_context *ctx,
struct st_fragment_program *stfp);
extern void
st_release_vp_variants( struct st_context *st,
struct st_vertex_program *stvp );
extern void
st_release_fp_variants( struct st_context *st,
struct st_fragment_program *stfp );
extern void
st_release_gp_variants(struct st_context *st,
struct st_geometry_program *stgp);
extern void
st_destroy_program_variants(struct st_context *st);
extern void
st_print_current_vertex_program(void);
extern void
st_precompile_shader_variant(struct st_context *st,
struct gl_program *prog);
#ifdef __cplusplus
}
#endif
#endif