src/gallium/drivers/llvmpipe/lp_state_blend.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
   4  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 /**
  30  * @author Jose Fonseca <jfonseca@vmware.com>
  31  * @author Keith Whitwell <keith@tungstengraphics.com>
  32  */
  33
  34 #include "util/u_memory.h"
  35 #include "util/u_math.h"
  36 #include "util/u_debug_dump.h"
  37 #include "draw/draw_context.h"
  38 #include "lp_screen.h"
  39 #include "lp_context.h"
  40 #include "lp_state.h"
  41
  42
  43 void *
  44 llvmpipe_create_blend_state(struct pipe_context *pipe,
  45                             const struct pipe_blend_state *blend)
  46 {
  47    return mem_dup(blend, sizeof(*blend));
  48 }
  49
  50 void llvmpipe_bind_blend_state( struct pipe_context *pipe,
  51                                 void *blend )
  52 {
  53    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  54
  55    if (llvmpipe->blend == blend)
  56       return;
  57
  58    draw_flush(llvmpipe->draw);
  59
  60    llvmpipe->blend = blend;
  61
  62    llvmpipe->dirty |= LP_NEW_BLEND;
  63 }
  64
  65 void llvmpipe_delete_blend_state(struct pipe_context *pipe,
  66                                  void *blend)
  67 {
  68    FREE( blend );
  69 }
  70
  71
  72 void llvmpipe_set_blend_color( struct pipe_context *pipe,
  73                              const struct pipe_blend_color *blend_color )
  74 {
  75    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  76    unsigned i, j;
  77
  78    if(memcmp(&llvmpipe->blend_color, blend_color, sizeof *blend_color) == 0)
  79       return;
  80
  81    draw_flush(llvmpipe->draw);
  82
  83    memcpy(&llvmpipe->blend_color, blend_color, sizeof *blend_color);
  84
  85    if(!llvmpipe->jit_context.blend_color)
  86       llvmpipe->jit_context.blend_color = align_malloc(4 * 16, 16);
  87    for (i = 0; i < 4; ++i) {
  88       uint8_t c = float_to_ubyte(blend_color->color[i]);
  89       for (j = 0; j < 16; ++j)
  90          llvmpipe->jit_context.blend_color[i*16 + j] = c;
  91    }
  92 }
  93
  94
  95 /** XXX move someday?  Or consolidate all these simple state setters
  96  * into one file.
  97  */
  98
  99
 100 void *
 101 llvmpipe_create_depth_stencil_state(struct pipe_context *pipe,
 102                                     const struct pipe_depth_stencil_alpha_state *depth_stencil)
 103 {
 104    return mem_dup(depth_stencil, sizeof(*depth_stencil));
 105 }
 106
 107 void
 108 llvmpipe_bind_depth_stencil_state(struct pipe_context *pipe,
 109                                   void *depth_stencil)
 110 {
 111    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 112
 113    if (llvmpipe->depth_stencil == depth_stencil)
 114       return;
 115
 116    draw_flush(llvmpipe->draw);
 117
 118    llvmpipe->depth_stencil = depth_stencil;
 119
 120    if(llvmpipe->depth_stencil)
 121       llvmpipe->jit_context.alpha_ref_value = llvmpipe->depth_stencil->alpha.ref_value;
 122
 123    llvmpipe->dirty |= LP_NEW_DEPTH_STENCIL_ALPHA;
 124 }
 125
 126 void
 127 llvmpipe_delete_depth_stencil_state(struct pipe_context *pipe, void *depth)
 128 {
 129    FREE( depth );
 130 }