forked from KolibriOS/kolibrios
211 lines
6.2 KiB
C
211 lines
6.2 KiB
C
/**************************************************************************
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*
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* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/* Authors: Keith Whitwell <keith@tungstengraphics.com>
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*/
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#ifndef DRAW_VS_H
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#define DRAW_VS_H
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#include "draw_context.h"
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#include "draw_private.h"
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#include "draw_vertex.h"
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struct draw_context;
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struct pipe_shader_state;
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struct draw_variant_input
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{
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enum pipe_format format;
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unsigned buffer;
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unsigned offset;
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unsigned instance_divisor;
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};
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struct draw_variant_output
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{
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enum attrib_emit format; /* output format */
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unsigned vs_output:8; /* which vertex shader output is this? */
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unsigned offset:24; /* offset into output vertex */
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};
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struct draw_variant_element {
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struct draw_variant_input in;
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struct draw_variant_output out;
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};
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struct draw_vs_variant_key {
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unsigned output_stride;
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unsigned nr_elements:8; /* max2(nr_inputs, nr_outputs) */
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unsigned nr_inputs:8;
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unsigned nr_outputs:8;
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unsigned viewport:1;
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unsigned clip:1;
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unsigned const_vbuffers:5;
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struct draw_variant_element element[PIPE_MAX_ATTRIBS];
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};
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struct draw_vs_variant;
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struct draw_vs_variant {
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struct draw_vs_variant_key key;
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struct draw_vertex_shader *vs;
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void (*set_buffer)( struct draw_vs_variant *,
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unsigned i,
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const void *ptr,
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unsigned stride,
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unsigned max_stride );
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void (PIPE_CDECL *run_linear)( struct draw_vs_variant *shader,
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unsigned start,
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unsigned count,
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void *output_buffer );
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void (PIPE_CDECL *run_elts)( struct draw_vs_variant *shader,
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const unsigned *elts,
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unsigned count,
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void *output_buffer );
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void (*destroy)( struct draw_vs_variant * );
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};
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/**
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* Private version of the compiled vertex_shader
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*/
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struct draw_vertex_shader {
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struct draw_context *draw;
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/* This member will disappear shortly:
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*/
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struct pipe_shader_state state;
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struct tgsi_shader_info info;
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unsigned position_output;
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unsigned edgeflag_output;
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unsigned clipvertex_output;
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unsigned clipdistance_output[PIPE_MAX_CLIP_OR_CULL_DISTANCE_ELEMENT_COUNT];
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unsigned culldistance_output[PIPE_MAX_CLIP_OR_CULL_DISTANCE_ELEMENT_COUNT];
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/* Extracted from shader:
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*/
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const float (*immediates)[4];
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/*
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*/
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struct draw_vs_variant *variant[16];
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unsigned nr_variants;
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unsigned last_variant;
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struct draw_vs_variant *(*create_variant)( struct draw_vertex_shader *shader,
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const struct draw_vs_variant_key *key );
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void (*prepare)( struct draw_vertex_shader *shader,
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struct draw_context *draw );
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/* Run the shader - this interface will get cleaned up in the
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* future:
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*/
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void (*run_linear)( struct draw_vertex_shader *shader,
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const float (*input)[4],
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float (*output)[4],
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const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
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const unsigned const_size[PIPE_MAX_CONSTANT_BUFFERS],
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unsigned count,
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unsigned input_stride,
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unsigned output_stride );
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void (*delete)( struct draw_vertex_shader * );
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};
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struct draw_vs_variant *
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draw_vs_lookup_variant( struct draw_vertex_shader *base,
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const struct draw_vs_variant_key *key );
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/********************************************************************************
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* Internal functions:
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*/
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struct draw_vertex_shader *
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draw_create_vs_exec(struct draw_context *draw,
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const struct pipe_shader_state *templ);
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struct draw_vs_variant_key;
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struct draw_vertex_shader;
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#if HAVE_LLVM
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struct draw_vertex_shader *
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draw_create_vs_llvm(struct draw_context *draw,
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const struct pipe_shader_state *state);
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#endif
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/********************************************************************************
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* Helpers for vs implementations that don't do their own fetch/emit variants.
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* Means these can be shared between shaders.
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*/
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struct translate;
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struct translate_key;
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struct translate *draw_vs_get_fetch( struct draw_context *draw,
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struct translate_key *key );
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struct translate *draw_vs_get_emit( struct draw_context *draw,
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struct translate_key *key );
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struct draw_vs_variant *
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draw_vs_create_variant_generic( struct draw_vertex_shader *vs,
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const struct draw_vs_variant_key *key );
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static INLINE int draw_vs_variant_keysize( const struct draw_vs_variant_key *key )
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{
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return 2 * sizeof(int) + key->nr_elements * sizeof(struct draw_variant_element);
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}
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static INLINE int draw_vs_variant_key_compare( const struct draw_vs_variant_key *a,
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const struct draw_vs_variant_key *b )
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{
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int keysize = draw_vs_variant_keysize(a);
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return memcmp(a, b, keysize);
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}
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#define MAX_TGSI_VERTICES 4
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#endif
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