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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 (at) 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