diff options
Diffstat (limited to 'src/mesa/drivers/dri/i915-tex/intel_buffers.c')
| -rw-r--r-- | src/mesa/drivers/dri/i915-tex/intel_buffers.c | 730 |
1 files changed, 0 insertions, 730 deletions
diff --git a/src/mesa/drivers/dri/i915-tex/intel_buffers.c b/src/mesa/drivers/dri/i915-tex/intel_buffers.c deleted file mode 100644 index 223b9c6ee21..00000000000 --- a/src/mesa/drivers/dri/i915-tex/intel_buffers.c +++ /dev/null @@ -1,730 +0,0 @@ -/************************************************************************** - * - * 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_screen.h" -#include "intel_context.h" -#include "intel_blit.h" -#include "intel_buffers.h" -#include "intel_depthstencil.h" -#include "intel_fbo.h" -#include "intel_tris.h" -#include "intel_regions.h" -#include "intel_batchbuffer.h" -#include "context.h" -#include "framebuffer.h" -#include "swrast/swrast.h" - - -/** - * XXX move this into a new dri/common/cliprects.c file. - */ -GLboolean intel_intersect_cliprects( drm_clip_rect_t *dst, - const drm_clip_rect_t *a, - const drm_clip_rect_t *b ) -{ - GLint bx = b->x1; - GLint by = b->y1; - GLint bw = b->x2 - bx; - GLint bh = b->y2 - by; - - if (bx < a->x1) bw -= a->x1 - bx, bx = a->x1; - if (by < a->y1) bh -= a->y1 - by, by = a->y1; - if (bx + bw > a->x2) bw = a->x2 - bx; - if (by + bh > a->y2) bh = a->y2 - by; - if (bw <= 0) return GL_FALSE; - if (bh <= 0) return GL_FALSE; - - dst->x1 = bx; - dst->y1 = by; - dst->x2 = bx + bw; - dst->y2 = by + bh; - - return GL_TRUE; -} - -/** - * Return pointer to current color drawing region, or NULL. - */ -struct intel_region *intel_drawbuf_region( struct intel_context *intel ) -{ - struct intel_renderbuffer *irbColor = - intel_renderbuffer(intel->ctx.DrawBuffer->_ColorDrawBuffers[0][0]); - if (irbColor) - return irbColor->region; - else - return NULL; -} - -/** - * Return pointer to current color reading region, or NULL. - */ -struct intel_region *intel_readbuf_region( struct intel_context *intel ) -{ - struct intel_renderbuffer *irb - = intel_renderbuffer(intel->ctx.ReadBuffer->_ColorReadBuffer); - if (irb) - return irb->region; - else - return NULL; -} - - - -static void intelBufferSize(GLframebuffer *buffer, - GLuint *width, - GLuint *height) -{ - GET_CURRENT_CONTEXT(ctx); - struct intel_context *intel = intel_context(ctx); - /* Need to lock to make sure the driDrawable is uptodate. This - * information is used to resize Mesa's software buffers, so it has - * to be correct. - */ - /* XXX This isn't 100% correct, the given buffer might not be - * bound to the current context! - */ - LOCK_HARDWARE(intel); - if (intel->driDrawable) { - *width = intel->driDrawable->w; - *height = intel->driDrawable->h; - } - else { - *width = 0; - *height = 0; - } - UNLOCK_HARDWARE(intel); -} - - - -/** - * Update the following fields for rendering to a user-created FBO: - * intel->numClipRects - * intel->pClipRects - * intel->drawX - * intel->drawY - */ -static void intelSetRenderbufferClipRects( struct intel_context *intel ) -{ - assert(intel->ctx.DrawBuffer->Width > 0); - assert(intel->ctx.DrawBuffer->Height > 0); - intel->fboRect.x1 = 0; - intel->fboRect.y1 = 0; - intel->fboRect.x2 = intel->ctx.DrawBuffer->Width; - intel->fboRect.y2 = intel->ctx.DrawBuffer->Height; - intel->numClipRects = 1; - intel->pClipRects = &intel->fboRect; - intel->drawX = 0; - intel->drawY = 0; -} - - -/** - * As above, but for rendering to front buffer of a window. - * \sa intelSetRenderbufferClipRects - */ -static void intelSetFrontClipRects( struct intel_context *intel ) -{ - __DRIdrawablePrivate *dPriv = intel->driDrawable; - - if (!dPriv) return; - - intel->numClipRects = dPriv->numClipRects; - intel->pClipRects = dPriv->pClipRects; - intel->drawX = dPriv->x; - intel->drawY = dPriv->y; -} - - -/** - * As above, but for rendering to back buffer of a window. - */ -static void intelSetBackClipRects( struct intel_context *intel ) -{ - __DRIdrawablePrivate *dPriv = intel->driDrawable; - - if (!dPriv) return; - - if (intel->sarea->pf_enabled == 0 && dPriv->numBackClipRects == 0) { - /* use the front clip rects */ - intel->numClipRects = dPriv->numClipRects; - intel->pClipRects = dPriv->pClipRects; - intel->drawX = dPriv->x; - intel->drawY = dPriv->y; - } else { - /* use the back clip rects */ - intel->numClipRects = dPriv->numBackClipRects; - intel->pClipRects = dPriv->pBackClipRects; - intel->drawX = dPriv->backX; - intel->drawY = dPriv->backY; - - if (dPriv->numBackClipRects == 1 && - dPriv->x == dPriv->backX && - dPriv->y == dPriv->backY) { - - /* Repeat the calculation of the back cliprect dimensions here - * as early versions of dri.a in the Xserver are incorrect. Try - * very hard not to restrict future versions of dri.a which - * might eg. allocate truly private back buffers. - */ - int x1, y1; - int x2, y2; - - x1 = dPriv->x; - y1 = dPriv->y; - x2 = dPriv->x + dPriv->w; - y2 = dPriv->y + dPriv->h; - - if (x1 < 0) x1 = 0; - if (y1 < 0) y1 = 0; - if (x2 > intel->intelScreen->width) x2 = intel->intelScreen->width; - if (y2 > intel->intelScreen->height) y2 = intel->intelScreen->height; - - if (x1 == dPriv->pBackClipRects[0].x1 && - y1 == dPriv->pBackClipRects[0].y1) { - - dPriv->pBackClipRects[0].x2 = x2; - dPriv->pBackClipRects[0].y2 = y2; - } - } - } -} - - -/** - * This will be called whenever the currently bound window is moved/resized. - * XXX: actually, it seems to NOT be called when the window is only moved (BP). - */ -void intelWindowMoved( struct intel_context *intel ) -{ - GLcontext *ctx = &intel->ctx; - - if (!intel->ctx.DrawBuffer) { - /* when would this happen? -BP */ - intelSetFrontClipRects( intel ); - } - else if (intel->ctx.DrawBuffer->Name != 0) { - /* drawing to user-created FBO - do nothing */ - /* Cliprects would be set from intelDrawBuffer() */ - } - else { - /* drawing to a window */ - switch (intel->ctx.DrawBuffer->_ColorDrawBufferMask[0]) { - case BUFFER_BIT_FRONT_LEFT: - intelSetFrontClipRects( intel ); - break; - case BUFFER_BIT_BACK_LEFT: - intelSetBackClipRects( intel ); - break; - default: - /* glDrawBuffer(GL_NONE or GL_FRONT_AND_BACK): software fallback */ - intelSetFrontClipRects( intel ); - } - } - - /* this update Mesa's notion of window size */ - if (ctx->WinSysDrawBuffer) { - _mesa_resize_framebuffer(ctx, ctx->WinSysDrawBuffer, - intel->driDrawable->w, intel->driDrawable->h); - } - - /* Update hardware scissor */ - ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y, - ctx->Scissor.Width, ctx->Scissor.Height ); -} - - - -/* A true meta version of this would be very simple and additionally - * machine independent. Maybe we'll get there one day. - */ -static void intelClearWithTris(struct intel_context *intel, - GLbitfield mask, - GLboolean all, - GLint cx, GLint cy, - GLint cw, GLint ch) -{ - GLcontext *ctx = &intel->ctx; - drm_clip_rect_t clear; - - if (INTEL_DEBUG & DEBUG_DRI) - _mesa_printf("%s 0x%x\n", __FUNCTION__, mask); - - LOCK_HARDWARE(intel); - - /* XXX FBO: was: intel->driDrawable->numClipRects */ - if (intel->numClipRects) { - GLuint buf; - - intel->vtbl.install_meta_state(intel); - - /* note: regardless of 'all', cx, cy, cw, ch are correct */ - clear.x1 = cx; - clear.y1 = cy; - clear.x2 = cx + cw; - clear.y2 = cy + ch; - - /* Back and stencil cliprects are the same. Try and do both - * buffers at once: - */ - if (mask & (BUFFER_BIT_BACK_LEFT|BUFFER_BIT_STENCIL|BUFFER_BIT_DEPTH)) { - struct intel_region *backRegion - = intel_get_rb_region(ctx->DrawBuffer, BUFFER_BACK_LEFT); - struct intel_region *depthRegion - = intel_get_rb_region(ctx->DrawBuffer, BUFFER_DEPTH); - const GLuint clearColor = (backRegion && backRegion->cpp == 4) - ? intel->ClearColor8888 : intel->ClearColor565; - - intel->vtbl.meta_draw_region(intel, backRegion, depthRegion ); - - if (mask & BUFFER_BIT_BACK_LEFT) - intel->vtbl.meta_color_mask(intel, GL_TRUE ); - else - intel->vtbl.meta_color_mask(intel, GL_FALSE ); - - if (mask & BUFFER_BIT_STENCIL) - intel->vtbl.meta_stencil_replace( intel, - intel->ctx.Stencil.WriteMask[0], - intel->ctx.Stencil.Clear); - else - intel->vtbl.meta_no_stencil_write(intel); - - if (mask & BUFFER_BIT_DEPTH) - intel->vtbl.meta_depth_replace( intel ); - else - intel->vtbl.meta_no_depth_write(intel); - - /* XXX: Using INTEL_BATCH_NO_CLIPRECTS here is dangerous as the - * drawing origin may not be correctly emitted. - */ - intel_meta_draw_quad(intel, - clear.x1, clear.x2, - clear.y1, clear.y2, - intel->ctx.Depth.Clear, - clearColor, - 0, 0, 0, 0); /* texcoords */ - - mask &= ~(BUFFER_BIT_BACK_LEFT|BUFFER_BIT_STENCIL|BUFFER_BIT_DEPTH); - } - - /* clear the remaining (color) renderbuffers */ - for (buf = 0; buf < BUFFER_COUNT && mask; buf++) { - const GLuint bufBit = 1 << buf; - if (mask & bufBit) { - struct intel_renderbuffer *irbColor = - intel_renderbuffer(ctx->DrawBuffer-> - Attachment[buf].Renderbuffer); - GLuint color = (irbColor->region->cpp == 4) - ? intel->ClearColor8888 : intel->ClearColor565; - - ASSERT(irbColor); - - intel->vtbl.meta_no_depth_write(intel); - intel->vtbl.meta_no_stencil_write(intel); - intel->vtbl.meta_color_mask(intel, GL_TRUE ); - intel->vtbl.meta_draw_region(intel, irbColor->region, NULL); - - /* XXX: Using INTEL_BATCH_NO_CLIPRECTS here is dangerous as the - * drawing origin may not be correctly emitted. - */ - intel_meta_draw_quad(intel, - clear.x1, clear.x2, - clear.y1, clear.y2, - 0, /* depth clear val */ - color, - 0, 0, 0, 0); /* texcoords */ - - mask &= ~bufBit; - } - } - - intel->vtbl.leave_meta_state( intel ); - intel_batchbuffer_flush( intel->batch ); - } - UNLOCK_HARDWARE(intel); -} - - - -/** - * Called by ctx->Driver.Clear. - */ -static void intelClear(GLcontext *ctx, - GLbitfield mask, - GLboolean all, - GLint cx, GLint cy, - GLint cw, GLint ch) -{ - struct intel_context *intel = intel_context( ctx ); - const GLuint colorMask = *((GLuint *) &ctx->Color.ColorMask); - GLbitfield tri_mask = 0; - GLbitfield blit_mask = 0; - GLbitfield swrast_mask = 0; - GLuint i; - - if (0) - fprintf(stderr, "%s\n", __FUNCTION__); - - /* HW color buffers (front, back, aux, generic FBO, etc) */ - if (colorMask == ~0) { - /* clear all R,G,B,A */ - /* XXX FBO: need to check if colorbuffers are software RBOs! */ - blit_mask |= (mask & BUFFER_BITS_COLOR); - } - else { - /* glColorMask in effect */ - tri_mask |= (mask & BUFFER_BITS_COLOR); - } - - /* HW stencil */ - if (mask & BUFFER_BIT_STENCIL) { - const struct intel_region *stencilRegion - = intel_get_rb_region(ctx->DrawBuffer, BUFFER_STENCIL); - if (stencilRegion) { - /* have hw stencil */ - if ((ctx->Stencil.WriteMask[0] & 0xff) != 0xff) { - /* not clearing all stencil bits, so use triangle clearing */ - tri_mask |= BUFFER_BIT_STENCIL; - } - else { - /* clearing all stencil bits, use blitting */ - blit_mask |= BUFFER_BIT_STENCIL; - } - } - } - - /* HW depth */ - if (mask & BUFFER_BIT_DEPTH) { - /* clear depth with whatever method is used for stencil (see above) */ - if (tri_mask & BUFFER_BIT_STENCIL) - tri_mask |= BUFFER_BIT_DEPTH; - else - blit_mask |= BUFFER_BIT_DEPTH; - } - - /* SW fallback clearing */ - swrast_mask = mask & ~tri_mask & ~blit_mask; - - for (i = 0; i < BUFFER_COUNT; i++) { - GLuint bufBit = 1 << i; - if ((blit_mask | tri_mask) & bufBit) { - if (!ctx->DrawBuffer->Attachment[i].Renderbuffer->ClassID) { - blit_mask &= ~bufBit; - tri_mask &= ~bufBit; - swrast_mask |= bufBit; - } - } - } - - - intelFlush( ctx ); /* XXX intelClearWithBlit also does this */ - - if (blit_mask) - intelClearWithBlit( ctx, blit_mask, all, cx, cy, cw, ch ); - - if (tri_mask) - intelClearWithTris( intel, tri_mask, all, cx, cy, cw, ch); - - if (swrast_mask) - _swrast_Clear( ctx, swrast_mask, all, cx, cy, cw, ch ); -} - - - -/* Flip the front & back buffers - */ -static void intelPageFlip( const __DRIdrawablePrivate *dPriv ) -{ -#if 0 - struct intel_context *intel; - int tmp, ret; - - if (INTEL_DEBUG & DEBUG_IOCTL) - fprintf(stderr, "%s\n", __FUNCTION__); - - assert(dPriv); - assert(dPriv->driContextPriv); - assert(dPriv->driContextPriv->driverPrivate); - - intel = (struct intel_context *) dPriv->driContextPriv->driverPrivate; - - intelFlush( &intel->ctx ); - LOCK_HARDWARE( intel ); - - if (dPriv->pClipRects) { - *(drm_clip_rect_t *)intel->sarea->boxes = dPriv->pClipRects[0]; - intel->sarea->nbox = 1; - } - - ret = drmCommandNone(intel->driFd, DRM_I830_FLIP); - if (ret) { - fprintf(stderr, "%s: %d\n", __FUNCTION__, ret); - UNLOCK_HARDWARE( intel ); - exit(1); - } - - tmp = intel->sarea->last_enqueue; - intelRefillBatchLocked( intel ); - UNLOCK_HARDWARE( intel ); - - - intelSetDrawBuffer( &intel->ctx, intel->ctx.Color.DriverDrawBuffer ); -#endif -} - - -void intelSwapBuffers( __DRIdrawablePrivate *dPriv ) -{ - if (dPriv->driverPrivate) { - const struct gl_framebuffer *fb - = (struct gl_framebuffer *) dPriv->driverPrivate; - if (fb->Visual.doubleBufferMode) { - GET_CURRENT_CONTEXT(ctx); - if (ctx && ctx->DrawBuffer == fb) { - _mesa_notifySwapBuffers( ctx ); /* flush pending rendering */ - } - if ( 0 /*intel->doPageFlip*/ ) { /* doPageFlip is never set !!! */ - intelPageFlip( dPriv ); - } else { - intelCopyBuffer( dPriv ); - } - } - } - else { - _mesa_problem(NULL, - "dPriv has no gl_framebuffer pointer in intelSwapBuffers"); - } -} - - -/** - * Update the hardware state for drawing into a window or framebuffer object. - * - * Called by glDrawBuffer, glBindFramebufferEXT, MakeCurrent, and other - * places within the driver. - * - * Basically, this needs to be called any time the current framebuffer - * changes, the renderbuffers change, or we need to draw into different - * color buffers. - */ -void -intel_draw_buffer(GLcontext *ctx, struct gl_framebuffer *fb) -{ - struct intel_context *intel = intel_context(ctx); - struct intel_region *colorRegion, *depthRegion = NULL; - struct intel_renderbuffer *irbDepth = NULL, *irbStencil = NULL; - int front = 0; /* drawing to front color buffer? */ - - if (!fb) { - /* this can happen during the initial context initialization */ - return; - } - - /* Do this here, note core Mesa, since this function is called from - * many places within the driver. - */ - if (ctx->NewState & (_NEW_BUFFERS | _NEW_COLOR | _NEW_PIXEL)) { - /* this updates the DrawBuffer->_NumColorDrawBuffers fields, etc */ - _mesa_update_framebuffer(ctx); - /* this updates the DrawBuffer's Width/Height if it's a FBO */ - _mesa_update_draw_buffer_bounds(ctx); - } - - if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { - /* this may occur when we're called by glBindFrameBuffer() during - * the process of someone setting up renderbuffers, etc. - */ - _mesa_debug(ctx, "DrawBuffer: incomplete user FBO\n"); - return; - } - - if (fb->Name) - intel_validate_paired_depth_stencil(ctx, fb); - - /* - * How many color buffers are we drawing into? - */ - if (fb->_NumColorDrawBuffers[0] != 1 -#if 0 - /* XXX FBO temporary - always use software rendering */ - || 1 -#endif - ) { - /* writing to 0 or 2 or 4 color buffers */ - /*_mesa_debug(ctx, "Software rendering\n");*/ - FALLBACK( intel, INTEL_FALLBACK_DRAW_BUFFER, GL_TRUE ); - front = 1; /* might not have back color buffer */ - } - else { - /* draw to exactly one color buffer */ - /*_mesa_debug(ctx, "Hardware rendering\n");*/ - FALLBACK( intel, INTEL_FALLBACK_DRAW_BUFFER, GL_FALSE ); - if (fb->_ColorDrawBufferMask[0] == BUFFER_BIT_FRONT_LEFT) { - front = 1; - } - } - - /* - * Get the intel_renderbuffer for the colorbuffer we're drawing into. - * And set up cliprects. - */ - if (fb->Name == 0) { - /* drawing to window system buffer */ - if (intel->sarea->pf_current_page == 1 ) { - /* page flipped back/front */ - front ^= 1; - } - if (front) { - intelSetFrontClipRects( intel ); - colorRegion = intel_get_rb_region(fb, BUFFER_FRONT_LEFT); - } - else { - intelSetBackClipRects( intel ); - colorRegion = intel_get_rb_region(fb, BUFFER_BACK_LEFT); - } - } - else { - /* drawing to user-created FBO */ - struct intel_renderbuffer *irb; - intelSetRenderbufferClipRects(intel); - irb = intel_renderbuffer(fb->_ColorDrawBuffers[0][0]); - colorRegion = (irb && irb->region) ? irb->region : NULL; - } - - if (!colorRegion) { - FALLBACK( intel, INTEL_FALLBACK_DRAW_BUFFER, GL_TRUE ); - } - else { - FALLBACK( intel, INTEL_FALLBACK_DRAW_BUFFER, GL_FALSE ); - } - - /*** - *** Get depth buffer region and check if we need a software fallback. - *** Note that the depth buffer is usually a DEPTH_STENCIL buffer. - ***/ - if (fb->_DepthBuffer && fb->_DepthBuffer->Wrapped) { - irbDepth = intel_renderbuffer(fb->_DepthBuffer->Wrapped); - if (irbDepth->region) { - FALLBACK(intel, INTEL_FALLBACK_DEPTH_BUFFER, GL_FALSE); - depthRegion = irbDepth->region; - } - else { - FALLBACK(intel, INTEL_FALLBACK_DEPTH_BUFFER, GL_TRUE); - depthRegion = NULL; - } - } - else { - /* not using depth buffer */ - FALLBACK(intel, INTEL_FALLBACK_DEPTH_BUFFER, GL_FALSE); - depthRegion = NULL; - } - - /*** - *** Stencil buffer - *** This can only be hardware accelerated if we're using a - *** combined DEPTH_STENCIL buffer (for now anyway). - ***/ - if (fb->_StencilBuffer && fb->_StencilBuffer->Wrapped) { - irbStencil = intel_renderbuffer(fb->_StencilBuffer->Wrapped); - if (irbStencil && irbStencil->region) { - ASSERT(irbStencil->Base._ActualFormat == GL_DEPTH24_STENCIL8_EXT); - FALLBACK(intel, INTEL_FALLBACK_STENCIL_BUFFER, GL_FALSE); - /* need to re-compute stencil hw state */ - ctx->Driver.Enable(ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled); - if (!depthRegion) - depthRegion = irbStencil->region; - } - else { - FALLBACK(intel, INTEL_FALLBACK_STENCIL_BUFFER, GL_TRUE); - } - } - else { - /* XXX FBO: instead of FALSE, pass ctx->Stencil.Enabled ??? */ - FALLBACK(intel, INTEL_FALLBACK_STENCIL_BUFFER, GL_FALSE); - /* need to re-compute stencil hw state */ - ctx->Driver.Enable(ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled); - } - - - /** - ** Release old regions, reference new regions - **/ -#if 0 /* XXX FBO: this seems to be redundant with i915_state_draw_region() */ - if (intel->draw_region != colorRegion) { - intel_region_release(intel, &intel->draw_region); - intel_region_reference(&intel->draw_region, colorRegion); - } - if (intel->depth_region != depthRegion) { - intel_region_release(intel, &intel->depth_region); - intel_region_reference(&intel->depth_region, depthRegion); - } -#endif - - intel->vtbl.set_draw_region( intel, colorRegion, depthRegion ); - - /* update viewport since it depends on window size */ - ctx->Driver.Viewport(ctx, ctx->Viewport.X, ctx->Viewport.Y, - ctx->Viewport.Width, ctx->Viewport.Height); - - /* Update hardware scissor */ - ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y, - ctx->Scissor.Width, ctx->Scissor.Height ); -} - - -static void -intelDrawBuffer(GLcontext *ctx, GLenum mode) -{ - intel_draw_buffer(ctx, ctx->DrawBuffer); -} - - -static void -intelReadBuffer( GLcontext *ctx, GLenum mode ) -{ - if (ctx->ReadBuffer == ctx->DrawBuffer) { - /* This will update FBO completeness status. - * A framebuffer will be incomplete if the GL_READ_BUFFER setting - * refers to a missing renderbuffer. Calling glReadBuffer can set - * that straight and can make the drawing buffer complete. - */ - intel_draw_buffer(ctx, ctx->DrawBuffer); - } - /* Generally, functions which read pixels (glReadPixels, glCopyPixels, etc) - * reference ctx->ReadBuffer and do appropriate state checks. - */ -} - - -void intelInitBufferFuncs( struct dd_function_table *functions ) -{ - functions->Clear = intelClear; - functions->GetBufferSize = intelBufferSize; - functions->ResizeBuffers = _mesa_resize_framebuffer; - functions->DrawBuffer = intelDrawBuffer; - functions->ReadBuffer = intelReadBuffer; -} |