src/gallium/drivers/llvmpipe/lp_state_setup.h

   1 #ifndef LP_STATE_SETUP_H
   2 #define LP_STATE_SETUP_H
   3
   4 #include "lp_bld_interp.h"
   5
   6
   7 struct llvmpipe_context;
   8 struct lp_setup_variant;
   9
  10 struct lp_setup_variant_list_item
  11 {
  12    struct lp_setup_variant *base;
  13    struct lp_setup_variant_list_item *next, *prev;
  14 };
  15
  16
  17 struct lp_setup_variant_key {
  18    unsigned num_inputs:8;
  19    unsigned flatshade_first:1;
  20    unsigned pixel_center_half:1;
  21    unsigned pad:7;
  22    unsigned size:16;
  23    struct lp_shader_input inputs[PIPE_MAX_SHADER_INPUTS];
  24 };
  25
  26
  27 typedef void (*lp_jit_setup_triangle)( const float (*v0)[4],
  28                                        const float (*v1)[4],
  29                                        const float (*v2)[4],
  30                                        boolean front_facing,
  31                                        float (*a0)[4],
  32                                        float (*dadx)[4],
  33                                        float (*dady)[4] );
  34
  35
  36
  37
  38 /* At this stage, for a given variant key, we create a
  39  * draw_vertex_info struct telling the draw module how to format the
  40  * vertices, and an llvm-generated function which calculates the
  41  * attribute interpolants (a0, dadx, dady) from three of those
  42  * vertices.
  43  */
  44 struct lp_setup_variant {
  45    struct lp_setup_variant_key key;
  46
  47    struct lp_setup_variant_list_item list_item_global;
  48
  49    /* XXX: this is a pointer to the LLVM IR.  Once jit_function is
  50     * generated, we never need to use the IR again - need to find a
  51     * way to release this data without destroying the generated
  52     * assembly.
  53     */
  54    LLVMValueRef function;
  55
  56    /* The actual generated setup function:
  57     */
  58    lp_jit_setup_triangle jit_function;
  59
  60    unsigned no;
  61 };
  62
  63 void lp_setup_tri_fallback( const float (*v0)[4],
  64                             const float (*v1)[4],
  65                             const float (*v2)[4],
  66                             boolean front_facing,
  67                             float (*a0)[4],
  68                             float (*dadx)[4],
  69                             float (*dady)[4],
  70                             const struct lp_setup_variant_key *key );
  71
  72 void lp_delete_setup_variants(struct llvmpipe_context *lp);
  73
  74 void
  75 lp_dump_setup_coef( const struct lp_setup_variant_key *key,
  76                     const float (*sa0)[4],
  77                     const float (*sdadx)[4],
  78                     const float (*sdady)[4]);
  79
  80 #endif