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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  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                     unsigned count,
  53                     unsigned input_stride,
  54                     unsigned output_stride )
  55 {
  56    /* we should never get here since the entire pipeline is
  57     * generated in draw_pt_fetch_shade_pipeline_llvm.c */
  58    debug_assert(0);
  59 }
  60
  61
  62 static void
  63 vs_llvm_delete( struct draw_vertex_shader *dvs )
  64 {
  65    struct llvm_vertex_shader *shader = llvm_vertex_shader(dvs);
  66    struct pipe_fence_handle *fence = NULL;
  67    struct draw_llvm_variant_list_item *li;
  68    struct pipe_context *pipe = dvs->draw->pipe;
  69
  70    /*
  71     * XXX: This might be not neccessary at all.
  72     */
  73    pipe->flush(pipe, 0, &fence);
  74    if (fence) {
  75       pipe->screen->fence_finish(pipe->screen, fence, 0);
  76       pipe->screen->fence_reference(pipe->screen, &fence, NULL);
  77    }
  78
  79
  80    li = first_elem(&shader->variants);
  81    while(!at_end(&shader->variants, li)) {
  82       struct draw_llvm_variant_list_item *next = next_elem(li);
  83       draw_llvm_destroy_variant(li->base);
  84       li = next;
  85    }
  86
  87    assert(shader->variants_cached == 0);
  88    FREE((void*) dvs->state.tokens);
  89    FREE( dvs );
  90 }
  91
  92
  93 struct draw_vertex_shader *
  94 draw_create_vs_llvm(struct draw_context *draw,
  95                     const struct pipe_shader_state *state)
  96 {
  97    struct llvm_vertex_shader *vs = CALLOC_STRUCT( llvm_vertex_shader );
  98
  99    if (vs == NULL)
 100       return NULL;
 101
 102    /* we make a private copy of the tokens */
 103    vs->base.state.tokens = tgsi_dup_tokens(state->tokens);
 104    if (!vs->base.state.tokens) {
 105       FREE(vs);
 106       return NULL;
 107    }
 108
 109    tgsi_scan_shader(state->tokens, &vs->base.info);
 110
 111    vs->base.draw = draw;
 112    vs->base.prepare = vs_llvm_prepare;
 113    vs->base.run_linear = vs_llvm_run_linear;
 114    vs->base.delete = vs_llvm_delete;
 115    vs->base.create_varient = draw_vs_create_varient_generic;
 116
 117    make_empty_list(&vs->variants);
 118
 119    return &vs->base;
 120 }