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
  32 #include "draw_private.h"
  33 #include "draw_context.h"
  34 #include "draw_vs.h"
  35 #include "draw_llvm.h"
  36
  37 #include "tgsi/tgsi_parse.h"
  38 #include "tgsi/tgsi_scan.h"
  39
  40 static void
  41 vs_llvm_prepare(struct draw_vertex_shader *shader,
  42                 struct draw_context *draw)
  43 {
  44    /*struct llvm_vertex_shader *evs = llvm_vertex_shader(shader);*/
  45 }
  46
  47 static void
  48 vs_llvm_run_linear( struct draw_vertex_shader *shader,
  49                     const float (*input)[4],
  50                     float (*output)[4],
  51                     const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
  52                     const unsigned constants_size[PIPE_MAX_CONSTANT_BUFFERS],
  53                     unsigned count,
  54                     unsigned input_stride,
  55                     unsigned output_stride )
  56 {
  57    /* we should never get here since the entire pipeline is
  58     * generated in draw_pt_fetch_shade_pipeline_llvm.c */
  59    debug_assert(0);
  60 }
  61
  62
  63 static void
  64 vs_llvm_delete( struct draw_vertex_shader *dvs )
  65 {
  66    struct llvm_vertex_shader *shader = llvm_vertex_shader(dvs);
  67    struct pipe_fence_handle *fence = NULL;
  68    struct draw_llvm_variant_list_item *li;
  69    struct pipe_context *pipe = dvs->draw->pipe;
  70
  71    /*
  72     * XXX: This might be not neccessary at all.
  73     */
  74    pipe->flush(pipe, 0, &fence);
  75    if (fence) {
  76       pipe->screen->fence_finish(pipe->screen, fence, 0);
  77       pipe->screen->fence_reference(pipe->screen, &fence, NULL);
  78    }
  79
  80
  81    li = first_elem(&shader->variants);
  82    while(!at_end(&shader->variants, li)) {
  83       struct draw_llvm_variant_list_item *next = next_elem(li);
  84       draw_llvm_destroy_variant(li->base);
  85       li = next;
  86    }
  87
  88    assert(shader->variants_cached == 0);
  89    FREE((void*) dvs->state.tokens);
  90    FREE( dvs );
  91 }
  92
  93
  94 struct draw_vertex_shader *
  95 draw_create_vs_llvm(struct draw_context *draw,
  96                     const struct pipe_shader_state *state)
  97 {
  98    struct llvm_vertex_shader *vs = CALLOC_STRUCT( llvm_vertex_shader );
  99
 100    if (vs == NULL)
 101       return NULL;
 102
 103    /* we make a private copy of the tokens */
 104    vs->base.state.tokens = tgsi_dup_tokens(state->tokens);
 105    if (!vs->base.state.tokens) {
 106       FREE(vs);
 107       return NULL;
 108    }
 109
 110    tgsi_scan_shader(state->tokens, &vs->base.info);
 111
 112    vs->variant_key_size =
 113       draw_llvm_variant_key_size(
 114          vs->base.info.file_max[TGSI_FILE_INPUT]+1,
 115          vs->base.info.file_max[TGSI_FILE_SAMPLER]+1);
 116
 117    vs->base.draw = draw;
 118    vs->base.prepare = vs_llvm_prepare;
 119    vs->base.run_linear = vs_llvm_run_linear;
 120    vs->base.delete = vs_llvm_delete;
 121    vs->base.create_varient = draw_vs_create_varient_generic;
 122
 123    make_empty_list(&vs->variants);
 124
 125    return &vs->base;
 126 }