148 lines
5.2 KiB
C
148 lines
5.2 KiB
C
/**************************************************************************
|
|
*
|
|
* Copyright 2009 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 TUNGSTEN GRAPHICS 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.
|
|
*
|
|
**************************************************************************/
|
|
|
|
#ifndef DRAW_GS_H
|
|
#define DRAW_GS_H
|
|
|
|
#include "draw_context.h"
|
|
#include "draw_private.h"
|
|
|
|
#define MAX_TGSI_PRIMITIVES 4
|
|
|
|
struct draw_context;
|
|
|
|
#ifdef HAVE_LLVM
|
|
struct draw_gs_jit_context;
|
|
struct draw_gs_llvm_variant;
|
|
|
|
/**
|
|
* Structure holding the inputs to the geometry shader. It uses SOA layout.
|
|
* The dimensions are as follows:
|
|
* - maximum number of vertices for a geometry shader input primitive
|
|
* (6 for triangle_adjacency)
|
|
* - maximum number of attributes for each vertex
|
|
* - four channels per each attribute (x,y,z,w)
|
|
* - number of input primitives equal to the SOA vector length
|
|
*/
|
|
struct draw_gs_inputs {
|
|
float data[6][PIPE_MAX_SHADER_INPUTS][TGSI_NUM_CHANNELS][TGSI_NUM_CHANNELS];
|
|
};
|
|
#endif
|
|
|
|
/**
|
|
* Private version of the compiled geometry shader
|
|
*/
|
|
struct draw_geometry_shader {
|
|
struct draw_context *draw;
|
|
|
|
struct tgsi_exec_machine *machine;
|
|
|
|
/* This member will disappear shortly:*/
|
|
struct pipe_shader_state state;
|
|
|
|
struct tgsi_shader_info info;
|
|
unsigned position_output;
|
|
unsigned viewport_index_output;
|
|
unsigned clipdistance_output[PIPE_MAX_CLIP_OR_CULL_DISTANCE_ELEMENT_COUNT];
|
|
unsigned culldistance_output[PIPE_MAX_CLIP_OR_CULL_DISTANCE_ELEMENT_COUNT];
|
|
|
|
unsigned max_output_vertices;
|
|
unsigned primitive_boundary;
|
|
unsigned input_primitive;
|
|
unsigned output_primitive;
|
|
|
|
unsigned *primitive_lengths;
|
|
unsigned emitted_vertices;
|
|
unsigned emitted_primitives;
|
|
|
|
float (*tmp_output)[4];
|
|
unsigned vertex_size;
|
|
|
|
unsigned in_prim_idx;
|
|
unsigned input_vertex_stride;
|
|
unsigned fetched_prim_count;
|
|
const float (*input)[4];
|
|
const struct tgsi_shader_info *input_info;
|
|
unsigned vector_length;
|
|
unsigned max_out_prims;
|
|
|
|
#ifdef HAVE_LLVM
|
|
struct draw_gs_inputs *gs_input;
|
|
struct draw_gs_jit_context *jit_context;
|
|
struct draw_gs_llvm_variant *current_variant;
|
|
struct vertex_header *gs_output;
|
|
|
|
int **llvm_prim_lengths;
|
|
int *llvm_emitted_primitives;
|
|
int *llvm_emitted_vertices;
|
|
int *llvm_prim_ids;
|
|
#endif
|
|
|
|
void (*fetch_inputs)(struct draw_geometry_shader *shader,
|
|
unsigned *indices,
|
|
unsigned num_vertices,
|
|
unsigned prim_idx);
|
|
void (*fetch_outputs)(struct draw_geometry_shader *shader,
|
|
unsigned num_primitives,
|
|
float (**p_output)[4]);
|
|
|
|
void (*prepare)(struct draw_geometry_shader *shader,
|
|
const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
|
|
const unsigned constants_size[PIPE_MAX_CONSTANT_BUFFERS]);
|
|
unsigned (*run)(struct draw_geometry_shader *shader,
|
|
unsigned input_primitives);
|
|
};
|
|
|
|
void draw_geometry_shader_new_instance(struct draw_geometry_shader *gs);
|
|
|
|
/*
|
|
* Returns the number of vertices emitted.
|
|
* The vertex shader can emit any number of vertices as long as it's
|
|
* smaller than the GS_MAX_OUTPUT_VERTICES shader property.
|
|
*/
|
|
int draw_geometry_shader_run(struct draw_geometry_shader *shader,
|
|
const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
|
|
const unsigned constants_size[PIPE_MAX_CONSTANT_BUFFERS],
|
|
const struct draw_vertex_info *input_verts,
|
|
const struct draw_prim_info *input_prim,
|
|
const struct tgsi_shader_info *input_info,
|
|
struct draw_vertex_info *output_verts,
|
|
struct draw_prim_info *output_prims );
|
|
|
|
void draw_geometry_shader_prepare(struct draw_geometry_shader *shader,
|
|
struct draw_context *draw);
|
|
|
|
int draw_gs_max_output_vertices(struct draw_geometry_shader *shader,
|
|
unsigned pipe_prim);
|
|
|
|
#ifdef HAVE_LLVM
|
|
void draw_gs_set_current_variant(struct draw_geometry_shader *shader,
|
|
struct draw_gs_llvm_variant *variant);
|
|
#endif
|
|
|
|
#endif
|