src/gallium/auxiliary/draw/draw_tess.h

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   3  * Copyright 2020 Red Hat.
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  25
  26 #ifndef DRAW_TESS_H
  27 #define DRAW_TESS_H
  28
  29 #include "draw_context.h"
  30 #include "draw_private.h"
  31
  32 struct draw_context;
  33 #ifdef LLVM_AVAILABLE
  34
  35 #define NUM_PATCH_INPUTS 32
  36 #define NUM_TCS_INPUTS (PIPE_MAX_SHADER_INPUTS - NUM_PATCH_INPUTS)
  37
  38 struct draw_tcs_inputs {
  39   /* num vertices per prim */
  40   float data[32][NUM_TCS_INPUTS][4];
  41 };
  42
  43 struct draw_tcs_outputs {
  44   /* num vertices per prim */
  45   float data[32][PIPE_MAX_SHADER_INPUTS][4];
  46 };
  47
  48 struct draw_tes_inputs {
  49   /* num vertices per prim */
  50   float data[32][PIPE_MAX_SHADER_INPUTS][4];
  51 };
  52
  53 #endif
  54
  55 struct draw_tess_ctrl_shader {
  56    struct draw_context *draw;
  57
  58    struct pipe_shader_state state;
  59    struct tgsi_shader_info info;
  60
  61    unsigned vector_length;
  62    unsigned vertices_out;
  63
  64    unsigned input_vertex_stride;
  65    const float (*input)[4];
  66    const struct tgsi_shader_info *input_info;
  67 #ifdef LLVM_AVAILABLE
  68    struct draw_tcs_inputs *tcs_input;
  69    struct draw_tcs_outputs *tcs_output;
  70    struct draw_tcs_jit_context *jit_context;
  71    struct draw_tcs_llvm_variant *current_variant;
  72 #endif
  73 };
  74
  75 struct draw_tess_eval_shader {
  76    struct draw_context *draw;
  77    struct pipe_shader_state state;
  78    struct tgsi_shader_info info;
  79
  80    unsigned prim_mode;
  81    unsigned spacing;
  82    unsigned vertex_order_cw;
  83    unsigned point_mode;
  84
  85    unsigned position_output;
  86    unsigned viewport_index_output;
  87    unsigned ccdistance_output[PIPE_MAX_CLIP_OR_CULL_DISTANCE_ELEMENT_COUNT];
  88    unsigned vector_length;
  89
  90    unsigned input_vertex_stride;
  91    const float (*input)[4];
  92    const struct tgsi_shader_info *input_info;
  93
  94 #ifdef LLVM_AVAILABLE
  95    struct draw_tes_inputs *tes_input;
  96    struct draw_tes_jit_context *jit_context;
  97    struct draw_tes_llvm_variant *current_variant;
  98 #endif
  99 };
 100
 101 enum pipe_prim_type get_tes_output_prim(struct draw_tess_eval_shader *shader);
 102
 103 int draw_tess_ctrl_shader_run(struct draw_tess_ctrl_shader *shader,
 104                               const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
 105                               const unsigned constants_size[PIPE_MAX_CONSTANT_BUFFERS],
 106                               const struct draw_vertex_info *input_verts,
 107                               const struct draw_prim_info *input_prim,
 108                               const struct tgsi_shader_info *input_info,
 109                               struct draw_vertex_info *output_verts,
 110                               struct draw_prim_info *output_prims );
 111
 112 int draw_tess_eval_shader_run(struct draw_tess_eval_shader *shader,
 113                               const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
 114                               const unsigned constants_size[PIPE_MAX_CONSTANT_BUFFERS],
 115                               unsigned num_input_vertices_per_patch,
 116                               const struct draw_vertex_info *input_verts,
 117                               const struct draw_prim_info *input_prim,
 118                               const struct tgsi_shader_info *input_info,
 119                               struct draw_vertex_info *output_verts,
 120                               struct draw_prim_info *output_prims,
 121                               ushort **elts_out);
 122
 123 #ifdef LLVM_AVAILABLE
 124 void draw_tcs_set_current_variant(struct draw_tess_ctrl_shader *shader,
 125                                   struct draw_tcs_llvm_variant *variant);
 126 void draw_tes_set_current_variant(struct draw_tess_eval_shader *shader,
 127                                   struct draw_tes_llvm_variant *variant);
 128 #endif
 129
 130 #endif