src/gallium/auxiliary/draw/draw_vs_llvm.c

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   3  * Copyright 2010 VMware, Inc.
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  16  * of the Software.
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  26  **************************************************************************/
  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                     const unsigned *elts)
  58 {
  59    /* we should never get here since the entire pipeline is
  60     * generated in draw_pt_fetch_shade_pipeline_llvm.c */
  61    debug_assert(0);
  62 }
  63
  64
  65 static void
  66 vs_llvm_delete( struct draw_vertex_shader *dvs )
  67 {
  68    struct llvm_vertex_shader *shader = llvm_vertex_shader(dvs);
  69    struct draw_llvm_variant_list_item *li;
  70
  71    li = first_elem(&shader->variants);
  72    while(!at_end(&shader->variants, li)) {
  73       struct draw_llvm_variant_list_item *next = next_elem(li);
  74       draw_llvm_destroy_variant(li->base);
  75       li = next;
  76    }
  77
  78    assert(shader->variants_cached == 0);
  79    FREE((void*) dvs->state.tokens);
  80    FREE( dvs );
  81 }
  82
  83
  84 struct draw_vertex_shader *
  85 draw_create_vs_llvm(struct draw_context *draw,
  86                     const struct pipe_shader_state *state)
  87 {
  88    struct llvm_vertex_shader *vs = CALLOC_STRUCT( llvm_vertex_shader );
  89
  90    if (!vs)
  91       return NULL;
  92
  93    /* we make a private copy of the tokens */
  94    vs->base.state.tokens = tgsi_dup_tokens(state->tokens);
  95    if (!vs->base.state.tokens) {
  96       FREE(vs);
  97       return NULL;
  98    }
  99
 100    tgsi_scan_shader(state->tokens, &vs->base.info);
 101
 102    vs->variant_key_size =
 103       draw_llvm_variant_key_size(
 104          vs->base.info.file_max[TGSI_FILE_INPUT]+1,
 105          MAX2(vs->base.info.file_max[TGSI_FILE_SAMPLER]+1,
 106               vs->base.info.file_max[TGSI_FILE_SAMPLER_VIEW]+1),
 107          vs->base.info.file_max[TGSI_FILE_IMAGE]+1);
 108
 109    vs->base.state.stream_output = state->stream_output;
 110    vs->base.draw = draw;
 111    vs->base.prepare = vs_llvm_prepare;
 112    vs->base.run_linear = vs_llvm_run_linear;
 113    vs->base.delete = vs_llvm_delete;
 114    vs->base.create_variant = draw_vs_create_variant_generic;
 115
 116    make_empty_list(&vs->variants);
 117
 118    return &vs->base;
 119 }