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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