src/mesa/drivers/dri/nouveau/nouveau_span.c

   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 #include "nouveau_bo.h"
  31
  32 #include "swrast/swrast.h"
  33 #include "swrast/s_context.h"
  34
  35
  36
  37 static void
  38 renderbuffer_map_unmap(struct gl_renderbuffer *rb, 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);
  44         } else {
  45                 nouveau_bo_unmap(s->bo);
  46         }
  47 }
  48
  49 static void
  50 framebuffer_map_unmap(struct gl_framebuffer *fb, GLboolean map)
  51 {
  52         int i;
  53
  54         for (i = 0; i < fb->_NumColorDrawBuffers; i++)
  55                 renderbuffer_map_unmap(fb->_ColorDrawBuffers[i], map);
  56
  57         renderbuffer_map_unmap(fb->_ColorReadBuffer, map);
  58
  59         if (fb->Attachment[BUFFER_DEPTH].Renderbuffer)
  60                 renderbuffer_map_unmap(fb->Attachment[BUFFER_DEPTH].Renderbuffer, map);
  61 }
  62
  63 static void
  64 span_map_unmap(struct gl_context *ctx, GLboolean map)
  65 {
  66         int i;
  67
  68         framebuffer_map_unmap(ctx->DrawBuffer, map);
  69
  70         if (ctx->ReadBuffer != ctx->DrawBuffer)
  71                 framebuffer_map_unmap(ctx->ReadBuffer, map);
  72
  73         for (i = 0; i < ctx->Const.MaxTextureUnits; i++)
  74                 if (map)
  75                         _swrast_map_texture(ctx, ctx->Texture.Unit[i]._Current);
  76                 else
  77                         _swrast_unmap_texture(ctx, ctx->Texture.Unit[i]._Current);
  78 }
  79
  80 static void
  81 nouveau_span_start(struct gl_context *ctx)
  82 {
  83         nouveau_fallback(ctx, SWRAST);
  84         span_map_unmap(ctx, GL_TRUE);
  85 }
  86
  87 static void
  88 nouveau_span_finish(struct gl_context *ctx)
  89 {
  90         span_map_unmap(ctx, GL_FALSE);
  91         nouveau_fallback(ctx, HWTNL);
  92 }
  93
  94 void
  95 nouveau_span_functions_init(struct gl_context *ctx)
  96 {
  97         struct swrast_device_driver *swdd =
  98                 _swrast_GetDeviceDriverReference(ctx);
  99
 100         swdd->SpanRenderStart = nouveau_span_start;
 101         swdd->SpanRenderFinish = nouveau_span_finish;
 102 }