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  1. /*
  2.  * Copyright (C) 2009 Francisco Jerez.
  3.  * All Rights Reserved.
  4.  *
  5.  * Permission is hereby granted, free of charge, to any person obtaining
  6.  * a copy of this software and associated documentation files (the
  7.  * "Software"), to deal in the Software without restriction, including
  8.  * without limitation the rights to use, copy, modify, merge, publish,
  9.  * distribute, sublicense, and/or sell copies of the Software, and to
  10.  * permit persons to whom the Software is furnished to do so, subject to
  11.  * the following conditions:
  12.  *
  13.  * The above copyright notice and this permission notice (including the
  14.  * next paragraph) shall be included in all copies or substantial
  15.  * portions of the Software.
  16.  *
  17.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18.  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20.  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21.  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22.  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23.  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24.  *
  25.  */
  26.  
  27. #include "nouveau_driver.h"
  28. #include "nouveau_fbo.h"
  29. #include "nouveau_context.h"
  30.  
  31. #include "swrast/swrast.h"
  32. #include "swrast/s_context.h"
  33.  
  34.  
  35.  
  36. static void
  37. renderbuffer_map_unmap(struct gl_context *ctx, struct gl_renderbuffer *rb,
  38.                        GLboolean map)
  39. {
  40.         struct nouveau_surface *s = &to_nouveau_renderbuffer(rb)->surface;
  41.  
  42.         if (map)
  43.                 nouveau_bo_map(s->bo, NOUVEAU_BO_RDWR, context_client(ctx));
  44. }
  45.  
  46. static void
  47. framebuffer_map_unmap(struct gl_context *ctx, struct gl_framebuffer *fb, GLboolean map)
  48. {
  49.         int i;
  50.  
  51.         for (i = 0; i < fb->_NumColorDrawBuffers; i++)
  52.                 renderbuffer_map_unmap(ctx, fb->_ColorDrawBuffers[i], map);
  53.  
  54.         renderbuffer_map_unmap(ctx, fb->_ColorReadBuffer, map);
  55.  
  56.         if (fb->Attachment[BUFFER_DEPTH].Renderbuffer)
  57.                 renderbuffer_map_unmap(ctx, fb->Attachment[BUFFER_DEPTH].Renderbuffer, map);
  58. }
  59.  
  60. static void
  61. span_map_unmap(struct gl_context *ctx, GLboolean map)
  62. {
  63.         int i;
  64.  
  65.         framebuffer_map_unmap(ctx, ctx->DrawBuffer, map);
  66.  
  67.         if (ctx->ReadBuffer != ctx->DrawBuffer)
  68.                 framebuffer_map_unmap(ctx, ctx->ReadBuffer, map);
  69.  
  70.         for (i = 0; i < ctx->Const.MaxTextureUnits; i++)
  71.                 if (map)
  72.                         _swrast_map_texture(ctx, ctx->Texture.Unit[i]._Current);
  73.                 else
  74.                         _swrast_unmap_texture(ctx, ctx->Texture.Unit[i]._Current);
  75. }
  76.  
  77. static void
  78. nouveau_span_start(struct gl_context *ctx)
  79. {
  80.         nouveau_fallback(ctx, SWRAST);
  81.         span_map_unmap(ctx, GL_TRUE);
  82. }
  83.  
  84. static void
  85. nouveau_span_finish(struct gl_context *ctx)
  86. {
  87.         span_map_unmap(ctx, GL_FALSE);
  88.         nouveau_fallback(ctx, HWTNL);
  89. }
  90.  
  91. void
  92. nouveau_span_functions_init(struct gl_context *ctx)
  93. {
  94.         struct swrast_device_driver *swdd =
  95.                 _swrast_GetDeviceDriverReference(ctx);
  96.  
  97.         swdd->SpanRenderStart = nouveau_span_start;
  98.         swdd->SpanRenderFinish = nouveau_span_finish;
  99. }
  100.