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  1. /**********************************************************
  2.  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person
  5.  * obtaining a copy of this software and associated documentation
  6.  * files (the "Software"), to deal in the Software without
  7.  * restriction, including without limitation the rights to use, copy,
  8.  * modify, merge, publish, distribute, sublicense, and/or sell copies
  9.  * of the Software, and to permit persons to whom the Software is
  10.  * furnished to do so, subject to the following conditions:
  11.  *
  12.  * The above copyright notice and this permission notice shall be
  13.  * included in all copies or substantial portions of the Software.
  14.  *
  15.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16.  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18.  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19.  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20.  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21.  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22.  * SOFTWARE.
  23.  *
  24.  **********************************************************/
  25.  
  26. #include "util/u_inlines.h"
  27. #include "pipe/p_defines.h"
  28. #include "util/u_math.h"
  29. #include "tgsi/tgsi_parse.h"
  30.  
  31. #include "svga_context.h"
  32. #include "svga_resource_buffer.h"
  33.  
  34. /***********************************************************************
  35.  * Constant buffers
  36.  */
  37.  
  38. struct svga_constbuf
  39. {
  40.    unsigned type;
  41.    float (*data)[4];
  42.    unsigned count;
  43. };
  44.  
  45.  
  46.  
  47. static void svga_set_constant_buffer(struct pipe_context *pipe,
  48.                                      uint shader, uint index,
  49.                                      struct pipe_constant_buffer *cb)
  50. {
  51.    struct svga_context *svga = svga_context(pipe);
  52.    struct pipe_resource *buf = cb ? cb->buffer : NULL;
  53.  
  54.    if (cb && cb->user_buffer) {
  55.       buf = svga_user_buffer_create(pipe->screen,
  56.                                     (void *) cb->user_buffer,
  57.                                     cb->buffer_size,
  58.                                     PIPE_BIND_CONSTANT_BUFFER);
  59.    }
  60.  
  61.    assert(shader < PIPE_SHADER_TYPES);
  62.    assert(index == 0);
  63.  
  64.    pipe_resource_reference( &svga->curr.cb[shader],
  65.                           buf );
  66.  
  67.    if (shader == PIPE_SHADER_FRAGMENT)
  68.       svga->dirty |= SVGA_NEW_FS_CONST_BUFFER;
  69.    else
  70.       svga->dirty |= SVGA_NEW_VS_CONST_BUFFER;
  71.  
  72.    if (cb && cb->user_buffer) {
  73.       pipe_resource_reference(&buf, NULL);
  74.    }
  75. }
  76.  
  77.  
  78.  
  79. void svga_init_constbuffer_functions( struct svga_context *svga )
  80. {
  81.    svga->pipe.set_constant_buffer = svga_set_constant_buffer;
  82. }
  83.  
  84.