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
  34
  35
  36 static void
  37 renderbuffer_map_unmap(struct gl_renderbuffer *rb, GLboolean map)
  38 {
  39         struct nouveau_surface *s = &to_nouveau_renderbuffer(rb)->surface;
  40
  41         if (map) {
  42                 nouveau_bo_map(s->bo, NOUVEAU_BO_RDWR);
  43         } else {
  44                 nouveau_bo_unmap(s->bo);
  45         }
  46 }
  47
  48 static void
  49 texture_unit_map_unmap(struct gl_context *ctx, struct gl_texture_unit *u, GLboolean map)
  50 {
  51         if (!u->_ReallyEnabled)
  52                 return;
  53
  54         if (map)
  55                 ctx->Driver.MapTexture(ctx, u->_Current);
  56         else
  57                 ctx->Driver.UnmapTexture(ctx, u->_Current);
  58 }
  59
  60 static void
  61 framebuffer_map_unmap(struct gl_framebuffer *fb, GLboolean map)
  62 {
  63         int i;
  64
  65         for (i = 0; i < fb->_NumColorDrawBuffers; i++)
  66                 renderbuffer_map_unmap(fb->_ColorDrawBuffers[i], map);
  67
  68         renderbuffer_map_unmap(fb->_ColorReadBuffer, map);
  69
  70         if (fb->Attachment[BUFFER_DEPTH].Renderbuffer)
  71                 renderbuffer_map_unmap(fb->Attachment[BUFFER_DEPTH].Renderbuffer, map);
  72 }
  73
  74 static void
  75 span_map_unmap(struct gl_context *ctx, GLboolean map)
  76 {
  77         int i;
  78
  79         framebuffer_map_unmap(ctx->DrawBuffer, map);
  80
  81         if (ctx->ReadBuffer != ctx->DrawBuffer)
  82                 framebuffer_map_unmap(ctx->ReadBuffer, map);
  83
  84         for (i = 0; i < ctx->Const.MaxTextureUnits; i++)
  85                 texture_unit_map_unmap(ctx, &ctx->Texture.Unit[i], map);
  86 }
  87
  88 static void
  89 nouveau_span_start(struct gl_context *ctx)
  90 {
  91         nouveau_fallback(ctx, SWRAST);
  92         span_map_unmap(ctx, GL_TRUE);
  93 }
  94
  95 static void
  96 nouveau_span_finish(struct gl_context *ctx)
  97 {
  98         span_map_unmap(ctx, GL_FALSE);
  99         nouveau_fallback(ctx, HWTNL);
 100 }
 101
 102 void
 103 nouveau_span_functions_init(struct gl_context *ctx)
 104 {
 105         struct swrast_device_driver *swdd =
 106                 _swrast_GetDeviceDriverReference(ctx);
 107
 108         swdd->SpanRenderStart = nouveau_span_start;
 109         swdd->SpanRenderFinish = nouveau_span_finish;
 110 }