0,0 → 1,104 |
/************************************************************************** |
* |
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. |
* All Rights Reserved. |
* |
* Permission is hereby granted, free of charge, to any person obtaining a |
* copy of this software and associated documentation files (the |
* "Software"), to deal in the Software without restriction, including |
* without limitation the rights to use, copy, modify, merge, publish, |
* distribute, sub license, and/or sell copies of the Software, and to |
* permit persons to whom the Software is furnished to do so, subject to |
* the following conditions: |
* |
* The above copyright notice and this permission notice (including the |
* next paragraph) shall be included in all copies or substantial portions |
* of the Software. |
* |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR |
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
* |
**************************************************************************/ |
|
#include "intel_context.h" |
#include "intel_buffers.h" |
#include "intel_fbo.h" |
#include "intel_mipmap_tree.h" |
|
#include "main/fbobject.h" |
#include "main/framebuffer.h" |
#include "main/renderbuffer.h" |
|
/** |
* Check if we're about to draw into the front color buffer. |
* If so, set the intel->front_buffer_dirty field to true. |
*/ |
void |
intel_check_front_buffer_rendering(struct intel_context *intel) |
{ |
const struct gl_framebuffer *fb = intel->ctx.DrawBuffer; |
if (_mesa_is_winsys_fbo(fb)) { |
/* drawing to window system buffer */ |
if (fb->_NumColorDrawBuffers > 0) { |
if (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT) { |
intel->front_buffer_dirty = true; |
} |
} |
} |
} |
|
static void |
intelDrawBuffer(struct gl_context * ctx, GLenum mode) |
{ |
if (ctx->DrawBuffer && _mesa_is_winsys_fbo(ctx->DrawBuffer)) { |
struct intel_context *const intel = intel_context(ctx); |
const bool was_front_buffer_rendering = |
intel->is_front_buffer_rendering; |
|
intel->is_front_buffer_rendering = (mode == GL_FRONT_LEFT) |
|| (mode == GL_FRONT) || (mode == GL_FRONT_AND_BACK); |
|
/* If we weren't front-buffer rendering before but we are now, |
* invalidate our DRI drawable so we'll ask for new buffers |
* (including the fake front) before we start rendering again. |
*/ |
if (!was_front_buffer_rendering && intel->is_front_buffer_rendering) |
dri2InvalidateDrawable(intel->driContext->driDrawablePriv); |
} |
|
intel_draw_buffer(ctx); |
} |
|
|
static void |
intelReadBuffer(struct gl_context * ctx, GLenum mode) |
{ |
if (ctx->DrawBuffer && _mesa_is_winsys_fbo(ctx->DrawBuffer)) { |
struct intel_context *const intel = intel_context(ctx); |
const bool was_front_buffer_reading = |
intel->is_front_buffer_reading; |
|
intel->is_front_buffer_reading = (mode == GL_FRONT_LEFT) |
|| (mode == GL_FRONT); |
|
/* If we weren't front-buffer reading before but we are now, |
* invalidate our DRI drawable so we'll ask for new buffers |
* (including the fake front) before we start reading again. |
*/ |
if (!was_front_buffer_reading && intel->is_front_buffer_reading) |
dri2InvalidateDrawable(intel->driContext->driReadablePriv); |
} |
} |
|
|
void |
intelInitBufferFuncs(struct dd_function_table *functions) |
{ |
functions->DrawBuffer = intelDrawBuffer; |
functions->ReadBuffer = intelReadBuffer; |
} |