src/gallium/drivers/llvmpipe/lp_state_rasterizer.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
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   7  * copy of this software and associated documentation files (the
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  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
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  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
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  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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  26  **************************************************************************/
  27
  28 #include "pipe/p_defines.h"
  29 #include "util/u_memory.h"
  30 #include "lp_context.h"
  31 #include "lp_state.h"
  32 #include "lp_setup.h"
  33 #include "draw/draw_context.h"
  34
  35
  36
  37 void *
  38 llvmpipe_create_rasterizer_state(struct pipe_context *pipe,
  39                                  const struct pipe_rasterizer_state *rast)
  40 {
  41    return mem_dup(rast, sizeof(*rast));
  42 }
  43
  44 void llvmpipe_bind_rasterizer_state(struct pipe_context *pipe,
  45                                     void *rasterizer)
  46 {
  47    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  48
  49    if (llvmpipe->rasterizer == rasterizer)
  50       return;
  51
  52    /* pass-through to draw module */
  53    draw_set_rasterizer_state(llvmpipe->draw, rasterizer);
  54
  55    llvmpipe->rasterizer = rasterizer;
  56
  57    /* Note: we can immediately set the triangle state here and
  58     * not worry about binning because we handle culling during
  59     * triangle setup, not when rasterizing the bins.
  60     */
  61    if (llvmpipe->rasterizer) {
  62       lp_setup_set_triangle_state( llvmpipe->setup,
  63                    llvmpipe->rasterizer->cull_mode,
  64                    llvmpipe->rasterizer->front_winding == PIPE_WINDING_CCW,
  65                    llvmpipe->rasterizer->scissor,
  66                    llvmpipe->rasterizer->gl_rasterization_rules);
  67    }
  68
  69    llvmpipe->dirty |= LP_NEW_RASTERIZER;
  70 }
  71
  72 void llvmpipe_delete_rasterizer_state(struct pipe_context *pipe,
  73                                       void *rasterizer)
  74 {
  75    FREE( rasterizer );
  76 }
  77
  78