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
  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 }