+++ /dev/null
-/**************************************************************************
- *
- * 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_regions.h"
-#include "intel_batchbuffer.h"
-#include "context.h"
-#include "framebuffer.h"
-#include "macros.h"
-#include "utils.h"
-#include "vblank.h"
-#include "swrast/swrast.h"
-
-GLboolean intel_intersect_cliprects( drm_clip_rect_t *dst,
- const drm_clip_rect_t *a,
- const drm_clip_rect_t *b )
-{
- dst->x1 = MAX2(a->x1, b->x1);
- dst->x2 = MIN2(a->x2, b->x2);
- dst->y1 = MAX2(a->y1, b->y1);
- dst->y2 = MIN2(a->y2, b->y2);
-
- return (dst->x1 <= dst->x2 &&
- dst->y1 <= dst->y2);
-}
-
-struct intel_region *intel_drawbuf_region( struct intel_context *intel )
-{
- switch (intel->ctx.DrawBuffer->_ColorDrawBufferMask[0]) {
- case BUFFER_BIT_FRONT_LEFT:
- return intel->front_region;
- case BUFFER_BIT_BACK_LEFT:
- return intel->back_region;
- default:
- /* Not necessary to fallback - could handle either NONE or
- * FRONT_AND_BACK cases below.
- */
- return NULL;
- }
-}
-
-struct intel_region *intel_readbuf_region( struct intel_context *intel )
-{
- GLcontext *ctx = &intel->ctx;
-
- /* This will have to change to support EXT_fbo's, but is correct
- * for now:
- */
- switch (ctx->ReadBuffer->_ColorReadBufferIndex) {
- case BUFFER_FRONT_LEFT:
- return intel->front_region;
- case BUFFER_BACK_LEFT:
- return intel->back_region;
- default:
- assert(0);
- 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.
- */
- LOCK_HARDWARE(intel);
- if (intel->driDrawable) {
- *width = intel->driDrawable->w;
- *height = intel->driDrawable->h;
- }
- else {
- *width = 0;
- *height = 0;
- }
- UNLOCK_HARDWARE(intel);
-}
-
-
-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;
-}
-
-
-static void intelSetBackClipRects( struct intel_context *intel )
-{
- __DRIdrawablePrivate *dPriv = intel->driDrawable;
-
- if (!dPriv) return;
-
- if (intel->sarea->pf_enabled == 0 && dPriv->numBackClipRects == 0) {
- intel->numClipRects = dPriv->numClipRects;
- intel->pClipRects = dPriv->pClipRects;
- intel->drawX = dPriv->x;
- intel->drawY = dPriv->y;
- } else {
- 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;
- }
- }
- }
-}
-
-
-void intelWindowMoved( struct intel_context *intel )
-{
- __DRIdrawablePrivate *dPriv = intel->driDrawable;
-
- if (!intel->ctx.DrawBuffer) {
- intelSetFrontClipRects( intel );
- }
- else {
- 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 );
- }
- }
-
- /* Get updated plane info so we sync against the right vblank counter */
- if (intel->intelScreen->driScrnPriv->ddx_version.minor >= 7) {
- drmI830Sarea *sarea = intel->sarea;
- drm_clip_rect_t drw_rect = { .x1 = dPriv->x, .x2 = dPriv->x + dPriv->w,
- .y1 = dPriv->y, .y2 = dPriv->y + dPriv->h };
- drm_clip_rect_t planeA_rect = { .x1 = sarea->planeA_x, .y1 = sarea->planeA_y,
- .x2 = sarea->planeA_x + sarea->planeA_w,
- .y2 = sarea->planeA_y + sarea->planeA_h };
- drm_clip_rect_t planeB_rect = { .x1 = sarea->planeB_x, .y1 = sarea->planeB_y,
- .x2 = sarea->planeB_x + sarea->planeB_w,
- .y2 = sarea->planeB_y + sarea->planeB_h };
- GLint areaA = driIntersectArea( drw_rect, planeA_rect );
- GLint areaB = driIntersectArea( drw_rect, planeB_rect );
- GLuint flags = dPriv->vblFlags;
-
- /* Update vblank info
- */
- if (areaB > areaA || (areaA == areaB && areaB > 0)) {
- flags = dPriv->vblFlags | VBLANK_FLAG_SECONDARY;
- } else {
- flags = dPriv->vblFlags & ~VBLANK_FLAG_SECONDARY;
- }
-
- /* Check to see if we changed pipes */
- if (flags != dPriv->vblFlags && dPriv->vblFlags &&
- !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ)) {
- int64_t count;
-
- /*
- * Update msc_base from old pipe
- */
- driDrawableGetMSC32(dPriv->driScreenPriv, dPriv, &count);
- dPriv->msc_base = count;
- /*
- * Then get new vblank_base and vblSeq values
- */
- dPriv->vblFlags = flags;
- driGetCurrentVBlank(dPriv, dPriv->vblFlags, &dPriv->vblSeq);
- dPriv->vblank_base = dPriv->vblSeq;
- }
- } else {
- dPriv->vblFlags &= ~VBLANK_FLAG_SECONDARY;
- }
-
- _mesa_resize_framebuffer(&intel->ctx,
- (GLframebuffer*)dPriv->driverPrivate,
- dPriv->w, dPriv->h);
-
- /* Set state we know depends on drawable parameters:
- */
- {
- GLcontext *ctx = &intel->ctx;
-
- if (ctx->Driver.Scissor)
- ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
- ctx->Scissor.Width, ctx->Scissor.Height );
-
- if (ctx->Driver.DepthRange)
- ctx->Driver.DepthRange( ctx,
- ctx->Viewport.Near,
- ctx->Viewport.Far );
-
- intel->NewGLState |= _NEW_SCISSOR;
- }
-
- /* This works because the lock is always grabbed before emitting
- * commands and commands are always flushed prior to releasing
- * the lock.
- */
- intel->NewGLState |= _NEW_WINDOW_POS;
-}
-
-
-
-/* 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)
-{
- GLcontext *ctx = &intel->ctx;
- drm_clip_rect_t clear;
- GLint cx, cy, cw, ch;
-
- if (INTEL_DEBUG & DEBUG_DRI)
- _mesa_printf("%s %x\n", __FUNCTION__, mask);
-
- {
-
- intel->vtbl.install_meta_state(intel);
-
- /* Get clear bounds after locking */
- cx = ctx->DrawBuffer->_Xmin;
- cy = ctx->DrawBuffer->_Ymin;
- cw = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin;
- ch = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin;
-
- 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)) {
- intel->vtbl.meta_draw_region(intel,
- intel->back_region,
- intel->depth_region );
-
- 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->vtbl.meta_draw_quad(intel,
- clear.x1, clear.x2,
- clear.y1, clear.y2,
- intel->ctx.Depth.Clear,
- intel->clear_chan[0],
- intel->clear_chan[1],
- intel->clear_chan[2],
- intel->clear_chan[3],
- 0, 0, 0, 0);
- }
-
- /* Front may have different cliprects:
- */
- if (mask & BUFFER_BIT_FRONT_LEFT) {
- 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,
- intel->front_region,
- intel->depth_region);
-
- /* XXX: Using INTEL_BATCH_NO_CLIPRECTS here is dangerous as the
- * drawing origin may not be correctly emitted.
- */
- intel->vtbl.meta_draw_quad(intel,
- clear.x1, clear.x2,
- clear.y1, clear.y2,
- 0,
- intel->clear_chan[0],
- intel->clear_chan[1],
- intel->clear_chan[2],
- intel->clear_chan[3],
- 0, 0, 0, 0);
- }
-
- intel->vtbl.leave_meta_state( intel );
- }
-}
-
-
-
-
-
-static void intelClear(GLcontext *ctx, GLbitfield mask)
-{
- 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;
-
- if (INTEL_DEBUG & DEBUG_DRI)
- fprintf(stderr, "%s %x\n", __FUNCTION__, mask);
-
-
- if (mask & BUFFER_BIT_FRONT_LEFT) {
- if (colorMask == ~0) {
- blit_mask |= BUFFER_BIT_FRONT_LEFT;
- }
- else {
- tri_mask |= BUFFER_BIT_FRONT_LEFT;
- }
- }
-
- if (mask & BUFFER_BIT_BACK_LEFT) {
- if (colorMask == ~0) {
- blit_mask |= BUFFER_BIT_BACK_LEFT;
- }
- else {
- tri_mask |= BUFFER_BIT_BACK_LEFT;
- }
- }
-
-
- if (mask & BUFFER_BIT_STENCIL) {
- if (!intel->hw_stencil) {
- swrast_mask |= BUFFER_BIT_STENCIL;
- }
- else if ((ctx->Stencil.WriteMask[0] & 0xff) != 0xff ||
- intel->depth_region->tiled) {
- tri_mask |= BUFFER_BIT_STENCIL;
- }
- else {
- blit_mask |= BUFFER_BIT_STENCIL;
- }
- }
-
- /* Do depth with stencil if possible to avoid 2nd pass over the
- * same buffer.
- */
- if (mask & BUFFER_BIT_DEPTH) {
- if ((tri_mask & BUFFER_BIT_STENCIL) ||
- intel->depth_region->tiled)
- tri_mask |= BUFFER_BIT_DEPTH;
- else
- blit_mask |= BUFFER_BIT_DEPTH;
- }
-
- swrast_mask |= (mask & BUFFER_BIT_ACCUM);
-
- intelFlush( ctx );
-
- if (blit_mask)
- intelClearWithBlit( ctx, blit_mask );
-
- if (tri_mask)
- intelClearWithTris( intel, tri_mask );
-
- if (swrast_mask)
- _swrast_Clear( ctx, swrast_mask );
-}
-
-
-
-
-
-
-
-/* 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->driContextPriv && dPriv->driContextPriv->driverPrivate) {
- struct intel_context *intel;
- GLcontext *ctx;
- intel = (struct intel_context *) dPriv->driContextPriv->driverPrivate;
- ctx = &intel->ctx;
- if (ctx->Visual.doubleBufferMode) {
- _mesa_notifySwapBuffers( ctx ); /* flush pending rendering comands */
- if ( 0 /*intel->doPageFlip*/ ) { /* doPageFlip is never set !!! */
- intelPageFlip( dPriv );
- } else {
- intelCopyBuffer( dPriv, NULL );
- }
- }
- } else {
- /* XXX this shouldn't be an error but we can't handle it for now */
- fprintf(stderr, "%s: drawable has no context!\n", __FUNCTION__);
- }
-}
-
-void intelCopySubBuffer( __DRIdrawablePrivate *dPriv,
- int x, int y, int w, int h )
-{
- if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
- struct intel_context *intel = dPriv->driContextPriv->driverPrivate;
- GLcontext *ctx = &intel->ctx;
-
- if (ctx->Visual.doubleBufferMode) {
- drm_clip_rect_t rect;
- rect.x1 = x + dPriv->x;
- rect.y1 = (dPriv->h - y - h) + dPriv->y;
- rect.x2 = rect.x1 + w;
- rect.y2 = rect.y1 + h;
- _mesa_notifySwapBuffers( ctx ); /* flush pending rendering comands */
- intelCopyBuffer( dPriv, &rect );
- }
- } else {
- /* XXX this shouldn't be an error but we can't handle it for now */
- fprintf(stderr, "%s: drawable has no context!\n", __FUNCTION__);
- }
-}
-
-
-static void intelDrawBuffer(GLcontext *ctx, GLenum mode )
-{
- struct intel_context *intel = intel_context(ctx);
- int front = 0;
-
- if (!ctx->DrawBuffer)
- return;
-
- switch ( ctx->DrawBuffer->_ColorDrawBufferMask[0] ) {
- case BUFFER_BIT_FRONT_LEFT:
- front = 1;
- FALLBACK( intel, INTEL_FALLBACK_DRAW_BUFFER, GL_FALSE );
- break;
- case BUFFER_BIT_BACK_LEFT:
- front = 0;
- FALLBACK( intel, INTEL_FALLBACK_DRAW_BUFFER, GL_FALSE );
- break;
- default:
- FALLBACK( intel, INTEL_FALLBACK_DRAW_BUFFER, GL_TRUE );
- return;
- }
-
- if ( intel->sarea->pf_current_page == 1 )
- front ^= 1;
-
- intelSetFrontClipRects( intel );
-
-
- if (front) {
- if (intel->draw_region != intel->front_region) {
- intel_region_release(intel, &intel->draw_region);
- intel_region_reference(&intel->draw_region, intel->front_region);
- }
- } else {
- if (intel->draw_region != intel->back_region) {
- intel_region_release(intel, &intel->draw_region);
- intel_region_reference(&intel->draw_region, intel->back_region);
- }
- }
-
- intel->vtbl.set_draw_region( intel,
- intel->draw_region,
- intel->depth_region);
-}
-
-static void intelReadBuffer( GLcontext *ctx, GLenum mode )
-{
- /* nothing, until we implement h/w glRead/CopyPixels or CopyTexImage */
-}
-
-
-
-void intelInitBufferFuncs( struct dd_function_table *functions )
-{
- functions->Clear = intelClear;
- functions->GetBufferSize = intelBufferSize;
- functions->DrawBuffer = intelDrawBuffer;
- functions->ReadBuffer = intelReadBuffer;
-}
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