src/gallium/drivers/softpipe/sp_state_blend.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   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
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  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.
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  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 <keithw@vmware.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 }