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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
  4.  * All Rights Reserved.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the
  8.  * "Software"), to deal in the Software without restriction, including
  9.  * without limitation the rights to use, copy, modify, merge, publish,
  10.  * distribute, sub license, and/or sell copies of the Software, and to
  11.  * permit persons to whom the Software is furnished to do so, subject to
  12.  * the following conditions:
  13.  *
  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.
  17.  *
  18.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21.  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25.  *
  26.  **************************************************************************/
  27.  
  28. /* Authors:  Keith Whitwell <keith@tungstengraphics.com>
  29.  */
  30.  
  31. #include "util/u_math.h"
  32. #include "util/u_memory.h"
  33. #include "draw/draw_context.h"
  34. #include "sp_context.h"
  35. #include "sp_state.h"
  36.  
  37.  
  38. static void *
  39. softpipe_create_blend_state(struct pipe_context *pipe,
  40.                             const struct pipe_blend_state *blend)
  41. {
  42.    return mem_dup(blend, sizeof(*blend));
  43. }
  44.  
  45.  
  46. static void
  47. softpipe_bind_blend_state(struct pipe_context *pipe,
  48.                           void *blend)
  49. {
  50.    struct softpipe_context *softpipe = softpipe_context(pipe);
  51.  
  52.    draw_flush(softpipe->draw);
  53.  
  54.    softpipe->blend = (struct pipe_blend_state *)blend;
  55.  
  56.    softpipe->dirty |= SP_NEW_BLEND;
  57. }
  58.  
  59.  
  60. static void
  61. softpipe_delete_blend_state(struct pipe_context *pipe,
  62.                             void *blend)
  63. {
  64.    FREE( blend );
  65. }
  66.  
  67.  
  68. static void
  69. softpipe_set_blend_color(struct pipe_context *pipe,
  70.                          const struct pipe_blend_color *blend_color)
  71. {
  72.    struct softpipe_context *softpipe = softpipe_context(pipe);
  73.    unsigned i;
  74.  
  75.    draw_flush(softpipe->draw);
  76.  
  77.    softpipe->blend_color = *blend_color;
  78.  
  79.    /* save clamped color too */
  80.    for (i = 0; i < 4; i++)
  81.       softpipe->blend_color_clamped.color[i] =
  82.          CLAMP(blend_color->color[i], 0.0f, 1.0f);
  83.  
  84.    softpipe->dirty |= SP_NEW_BLEND;
  85. }
  86.  
  87.  
  88. static void *
  89. softpipe_create_depth_stencil_state(struct pipe_context *pipe,
  90.                                     const struct pipe_depth_stencil_alpha_state *depth_stencil)
  91. {
  92.    return mem_dup(depth_stencil, sizeof(*depth_stencil));
  93. }
  94.  
  95.  
  96. static void
  97. softpipe_bind_depth_stencil_state(struct pipe_context *pipe,
  98.                                   void *depth_stencil)
  99. {
  100.    struct softpipe_context *softpipe = softpipe_context(pipe);
  101.  
  102.    softpipe->depth_stencil = (struct pipe_depth_stencil_alpha_state *)depth_stencil;
  103.  
  104.    softpipe->dirty |= SP_NEW_DEPTH_STENCIL_ALPHA;
  105. }
  106.  
  107.  
  108. static void
  109. softpipe_delete_depth_stencil_state(struct pipe_context *pipe, void *depth)
  110. {
  111.    FREE( depth );
  112. }
  113.  
  114.  
  115. static void
  116. softpipe_set_stencil_ref(struct pipe_context *pipe,
  117.                          const struct pipe_stencil_ref *stencil_ref)
  118. {
  119.    struct softpipe_context *softpipe = softpipe_context(pipe);
  120.  
  121.    softpipe->stencil_ref = *stencil_ref;
  122.  
  123.    softpipe->dirty |= SP_NEW_DEPTH_STENCIL_ALPHA;
  124. }
  125.  
  126.  
  127. static void
  128. softpipe_set_sample_mask(struct pipe_context *pipe,
  129.                          unsigned sample_mask)
  130. {
  131. }
  132.  
  133.  
  134. void
  135. softpipe_init_blend_funcs(struct pipe_context *pipe)
  136. {
  137.    pipe->create_blend_state = softpipe_create_blend_state;
  138.    pipe->bind_blend_state   = softpipe_bind_blend_state;
  139.    pipe->delete_blend_state = softpipe_delete_blend_state;
  140.  
  141.    pipe->set_blend_color = softpipe_set_blend_color;
  142.  
  143.    pipe->create_depth_stencil_alpha_state = softpipe_create_depth_stencil_state;
  144.    pipe->bind_depth_stencil_alpha_state   = softpipe_bind_depth_stencil_state;
  145.    pipe->delete_depth_stencil_alpha_state = softpipe_delete_depth_stencil_state;
  146.  
  147.    pipe->set_stencil_ref = softpipe_set_stencil_ref;
  148.  
  149.    pipe->set_sample_mask = softpipe_set_sample_mask;
  150. }
  151.