workbench/libs/mesa/src/gallium/auxiliary/draw/draw_vs_llvm.c

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   3  * Copyright 2010 VMware, Inc.
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  27
  28 #include "util/u_math.h"
  29 #include "util/u_memory.h"
  30 #include "pipe/p_shader_tokens.h"
  31 #include "pipe/p_screen.h"
  32
  33 #include "draw_private.h"
  34 #include "draw_context.h"
  35 #include "draw_vs.h"
  36 #include "draw_llvm.h"
  37
  38 #include "tgsi/tgsi_parse.h"
  39 #include "tgsi/tgsi_scan.h"
  40
  41 static void
  42 vs_llvm_prepare(struct draw_vertex_shader *shader,
  43                 struct draw_context *draw)
  44 {
  45    /*struct llvm_vertex_shader *evs = llvm_vertex_shader(shader);*/
  46 }
  47
  48 static void
  49 vs_llvm_run_linear( struct draw_vertex_shader *shader,
  50                     const float (*input)[4],
  51                     float (*output)[4],
  52                     const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
  53                     const unsigned constants_size[PIPE_MAX_CONSTANT_BUFFERS],
  54                     unsigned count,
  55                     unsigned input_stride,
  56                     unsigned output_stride )
  57 {
  58    /* we should never get here since the entire pipeline is
  59     * generated in draw_pt_fetch_shade_pipeline_llvm.c */
  60    debug_assert(0);
  61 }
  62
  63
  64 static void
  65 vs_llvm_delete( struct draw_vertex_shader *dvs )
  66 {
  67    struct llvm_vertex_shader *shader = llvm_vertex_shader(dvs);
  68    struct draw_llvm_variant_list_item *li;
  69
  70    li = first_elem(&shader->variants);
  71    while(!at_end(&shader->variants, li)) {
  72       struct draw_llvm_variant_list_item *next = next_elem(li);
  73       draw_llvm_destroy_variant(li->base);
  74       li = next;
  75    }
  76
  77    assert(shader->variants_cached == 0);
  78    FREE((void*) dvs->state.tokens);
  79    FREE( dvs );
  80 }
  81
  82
  83 struct draw_vertex_shader *
  84 draw_create_vs_llvm(struct draw_context *draw,
  85                     const struct pipe_shader_state *state)
  86 {
  87    struct llvm_vertex_shader *vs = CALLOC_STRUCT( llvm_vertex_shader );
  88
  89    if (vs == NULL)
  90       return NULL;
  91
  92    /* we make a private copy of the tokens */
  93    vs->base.state.tokens = tgsi_dup_tokens(state->tokens);
  94    if (!vs->base.state.tokens) {
  95       FREE(vs);
  96       return NULL;
  97    }
  98
  99    tgsi_scan_shader(state->tokens, &vs->base.info);
 100
 101    vs->variant_key_size =
 102       draw_llvm_variant_key_size(
 103          vs->base.info.file_max[TGSI_FILE_INPUT]+1,
 104          vs->base.info.file_max[TGSI_FILE_SAMPLER]+1);
 105
 106    vs->base.draw = draw;
 107    vs->base.prepare = vs_llvm_prepare;
 108    vs->base.run_linear = vs_llvm_run_linear;
 109    vs->base.delete = vs_llvm_delete;
 110    vs->base.create_variant = draw_vs_create_variant_generic;
 111
 112    make_empty_list(&vs->variants);
 113
 114    return &vs->base;
 115 }