1f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/************************************************************************** 2f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 3f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. 4f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * All Rights Reserved. 5f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 6f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Permission is hereby granted, free of charge, to any person obtaining a 7f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * copy of this software and associated documentation files (the 8f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * "Software"), to deal in the Software without restriction, including 9f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * without limitation the rights to use, copy, modify, merge, publish, 10f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * distribute, sub license, and/or sell copies of the Software, and to 11f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * permit persons to whom the Software is furnished to do so, subject to 12f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the following conditions: 13f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 14f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The above copyright notice and this permission notice (including the 15f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * next paragraph) shall be included in all copies or substantial portions 16f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * of the Software. 17f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 18f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 26f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org **************************************************************************/ 27f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 28f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "intel_context.h" 29f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "intel_buffers.h" 30f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "intel_fbo.h" 31f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "intel_mipmap_tree.h" 32f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 33f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "main/fbobject.h" 34f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "main/framebuffer.h" 35f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "main/renderbuffer.h" 36f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 37f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 38f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Return pointer to current color drawing region, or NULL. 39f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 40f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstruct intel_region * 41f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgintel_drawbuf_region(struct intel_context *intel) 42f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 43f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct intel_renderbuffer *irbColor = 44f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org intel_renderbuffer(intel->ctx.DrawBuffer->_ColorDrawBuffers[0]); 45f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (irbColor && irbColor->mt) 46f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return irbColor->mt->region; 47f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org else 48f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return NULL; 49f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 50f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 51f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 52f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Return pointer to current color reading region, or NULL. 53f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 54f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstruct intel_region * 55f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgintel_readbuf_region(struct intel_context *intel) 56f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 57f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct intel_renderbuffer *irb 58f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org = intel_renderbuffer(intel->ctx.ReadBuffer->_ColorReadBuffer); 59f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (irb && irb->mt) 60f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return irb->mt->region; 61f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org else 62f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return NULL; 63f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 64f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 65f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 66f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Check if we're about to draw into the front color buffer. 67f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * If so, set the intel->front_buffer_dirty field to true. 68f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 69f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 70f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgintel_check_front_buffer_rendering(struct intel_context *intel) 71f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 72f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const struct gl_framebuffer *fb = intel->ctx.DrawBuffer; 73f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (_mesa_is_winsys_fbo(fb)) { 74f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* drawing to window system buffer */ 75f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (fb->_NumColorDrawBuffers > 0) { 76f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT) { 77f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org intel->front_buffer_dirty = true; 78f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 79f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 80f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 81f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 82f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 83f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic void 84f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgintelDrawBuffer(struct gl_context * ctx, GLenum mode) 85f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 86f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ctx->DrawBuffer && _mesa_is_winsys_fbo(ctx->DrawBuffer)) { 87f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct intel_context *const intel = intel_context(ctx); 88f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const bool was_front_buffer_rendering = 89f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org intel->is_front_buffer_rendering; 90f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 91f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org intel->is_front_buffer_rendering = (mode == GL_FRONT_LEFT) 92f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org || (mode == GL_FRONT) || (mode == GL_FRONT_AND_BACK); 93f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 94f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* If we weren't front-buffer rendering before but we are now, 95f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * invalidate our DRI drawable so we'll ask for new buffers 96f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * (including the fake front) before we start rendering again. 97f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 98f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (!was_front_buffer_rendering && intel->is_front_buffer_rendering) 99f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dri2InvalidateDrawable(intel->driContext->driDrawablePriv); 100f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 101f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 102f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org intel_draw_buffer(ctx); 103f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 104f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 105f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 106f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic void 107f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgintelReadBuffer(struct gl_context * ctx, GLenum mode) 108f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 109f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ctx->DrawBuffer && _mesa_is_winsys_fbo(ctx->DrawBuffer)) { 110f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct intel_context *const intel = intel_context(ctx); 111f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const bool was_front_buffer_reading = 112f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org intel->is_front_buffer_reading; 113f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 114f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org intel->is_front_buffer_reading = (mode == GL_FRONT_LEFT) 115f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org || (mode == GL_FRONT); 116f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 117f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* If we weren't front-buffer reading before but we are now, 118f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * invalidate our DRI drawable so we'll ask for new buffers 119f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * (including the fake front) before we start reading again. 120f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 121f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (!was_front_buffer_reading && intel->is_front_buffer_reading) 122f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dri2InvalidateDrawable(intel->driContext->driReadablePriv); 123f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 124f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 125f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 126f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 127f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 128f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgintelInitBufferFuncs(struct dd_function_table *functions) 129f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 130f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org functions->DrawBuffer = intelDrawBuffer; 131f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org functions->ReadBuffer = intelReadBuffer; 132f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 133