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 #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 #include "nir/nir_to_tgsi_info.h"
  41 #include "nir.h"
  42
  43 static void
  44 vs_llvm_prepare(struct draw_vertex_shader *shader,
  45                 struct draw_context *draw)
  46 {
  47    /*struct llvm_vertex_shader *evs = llvm_vertex_shader(shader);*/
  48 }
  49
  50 static void
  51 vs_llvm_run_linear( struct draw_vertex_shader *shader,
  52                     const float (*input)[4],
  53                     float (*output)[4],
  54                     const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
  55                     const unsigned constants_size[PIPE_MAX_CONSTANT_BUFFERS],
  56                     unsigned count,
  57                     unsigned input_stride,
  58                     unsigned output_stride,
  59                     const unsigned *elts)
  60 {
  61    /* we should never get here since the entire pipeline is
  62     * generated in draw_pt_fetch_shade_pipeline_llvm.c */
  63    debug_assert(0);
  64 }
  65
  66
  67 static void
  68 vs_llvm_delete( struct draw_vertex_shader *dvs )
  69 {
  70    struct llvm_vertex_shader *shader = llvm_vertex_shader(dvs);
  71    struct draw_llvm_variant_list_item *li;
  72
  73    li = first_elem(&shader->variants);
  74    while(!at_end(&shader->variants, li)) {
  75       struct draw_llvm_variant_list_item *next = next_elem(li);
  76       draw_llvm_destroy_variant(li->base);
  77       li = next;
  78    }
  79
  80    assert(shader->variants_cached == 0);
  81    if (dvs->state.ir.nir)
  82       ralloc_free(dvs->state.ir.nir);
  83    FREE((void*) dvs->state.tokens);
  84    FREE( dvs );
  85 }
  86
  87
  88 struct draw_vertex_shader *
  89 draw_create_vs_llvm(struct draw_context *draw,
  90                     const struct pipe_shader_state *state)
  91 {
  92    struct llvm_vertex_shader *vs = CALLOC_STRUCT( llvm_vertex_shader );
  93
  94    if (!vs)
  95       return NULL;
  96
  97    /* due to some bugs in the feedback state tracker we have to check
  98       for ir.nir & PIPE_SHADER_IR_NIR here. */
  99    if (state->ir.nir && state->type == PIPE_SHADER_IR_NIR) {
 100       vs->base.state.ir.nir = state->ir.nir;
 101       if (!draw->pipe->screen->get_param(draw->pipe->screen, PIPE_CAP_PACKED_UNIFORMS))
 102          NIR_PASS_V(state->ir.nir, nir_lower_uniforms_to_ubo, 16);
 103       nir_tgsi_scan_shader(state->ir.nir, &vs->base.info, true);
 104    } else {
 105       /* we make a private copy of the tokens */
 106       vs->base.state.tokens = tgsi_dup_tokens(state->tokens);
 107       if (!vs->base.state.tokens) {
 108          FREE(vs);
 109          return NULL;
 110       }
 111
 112       tgsi_scan_shader(state->tokens, &vs->base.info);
 113    }
 114
 115    vs->variant_key_size =
 116       draw_llvm_variant_key_size(
 117          vs->base.info.file_max[TGSI_FILE_INPUT]+1,
 118          MAX2(vs->base.info.file_max[TGSI_FILE_SAMPLER]+1,
 119               vs->base.info.file_max[TGSI_FILE_SAMPLER_VIEW]+1),
 120          vs->base.info.file_max[TGSI_FILE_IMAGE]+1);
 121
 122    vs->base.state.type = state->type;
 123    vs->base.state.stream_output = state->stream_output;
 124    vs->base.draw = draw;
 125    vs->base.prepare = vs_llvm_prepare;
 126    vs->base.run_linear = vs_llvm_run_linear;
 127    vs->base.delete = vs_llvm_delete;
 128    vs->base.create_variant = draw_vs_create_variant_generic;
 129
 130    make_empty_list(&vs->variants);
 131
 132    return &vs->base;
 133 }