diff options
Diffstat (limited to 'src/mesa/drivers/dri/radeon/radeon_common.c')
| -rw-r--r-- | src/mesa/drivers/dri/radeon/radeon_common.c | 1416 |
1 files changed, 1416 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/radeon/radeon_common.c b/src/mesa/drivers/dri/radeon/radeon_common.c new file mode 100644 index 0000000000..dc281ee269 --- /dev/null +++ b/src/mesa/drivers/dri/radeon/radeon_common.c @@ -0,0 +1,1416 @@ +/************************************************************************** + +Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved. + +The Weather Channel (TM) funded Tungsten Graphics to develop the +initial release of the Radeon 8500 driver under the XFree86 license. +This notice must be preserved. + +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, sublicense, 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 NONINFRINGEMENT. +IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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. + +**************************************************************************/ + +/* + * Authors: + * Keith Whitwell <keith@tungstengraphics.com> + */ + +/* + - Scissor implementation + - buffer swap/copy ioctls + - finish/flush + - state emission + - cmdbuffer management +*/ + +#include <errno.h> +#include "main/glheader.h" +#include "main/imports.h" +#include "main/context.h" +#include "main/api_arrayelt.h" +#include "main/enums.h" +#include "main/colormac.h" +#include "main/light.h" +#include "main/framebuffer.h" +#include "main/simple_list.h" +#include "main/renderbuffer.h" +#include "swrast/swrast.h" +#include "vbo/vbo.h" +#include "tnl/tnl.h" +#include "tnl/t_pipeline.h" +#include "swrast_setup/swrast_setup.h" + +#include "main/blend.h" +#include "main/bufferobj.h" +#include "main/buffers.h" +#include "main/depth.h" +#include "main/shaders.h" +#include "main/texstate.h" +#include "main/varray.h" +#include "glapi/dispatch.h" +#include "swrast/swrast.h" +#include "main/stencil.h" +#include "main/matrix.h" +#include "main/attrib.h" +#include "main/enable.h" +#include "main/viewport.h" + +#include "dri_util.h" +#include "vblank.h" + +#include "radeon_common.h" +#include "radeon_bocs_wrapper.h" +#include "radeon_lock.h" +#include "radeon_drm.h" +#include "radeon_mipmap_tree.h" + +#define DEBUG_CMDBUF 0 + +/* ============================================================= + * Scissoring + */ + +static GLboolean intersect_rect(drm_clip_rect_t * out, + drm_clip_rect_t * a, drm_clip_rect_t * b) +{ + *out = *a; + if (b->x1 > out->x1) + out->x1 = b->x1; + if (b->y1 > out->y1) + out->y1 = b->y1; + if (b->x2 < out->x2) + out->x2 = b->x2; + if (b->y2 < out->y2) + out->y2 = b->y2; + if (out->x1 >= out->x2) + return GL_FALSE; + if (out->y1 >= out->y2) + return GL_FALSE; + return GL_TRUE; +} + +void radeonRecalcScissorRects(radeonContextPtr radeon) +{ + drm_clip_rect_t *out; + int i; + + /* Grow cliprect store? + */ + if (radeon->state.scissor.numAllocedClipRects < radeon->numClipRects) { + while (radeon->state.scissor.numAllocedClipRects < + radeon->numClipRects) { + radeon->state.scissor.numAllocedClipRects += 1; /* zero case */ + radeon->state.scissor.numAllocedClipRects *= 2; + } + + if (radeon->state.scissor.pClipRects) + FREE(radeon->state.scissor.pClipRects); + + radeon->state.scissor.pClipRects = + MALLOC(radeon->state.scissor.numAllocedClipRects * + sizeof(drm_clip_rect_t)); + + if (radeon->state.scissor.pClipRects == NULL) { + radeon->state.scissor.numAllocedClipRects = 0; + return; + } + } + + out = radeon->state.scissor.pClipRects; + radeon->state.scissor.numClipRects = 0; + + for (i = 0; i < radeon->numClipRects; i++) { + if (intersect_rect(out, + &radeon->pClipRects[i], + &radeon->state.scissor.rect)) { + radeon->state.scissor.numClipRects++; + out++; + } + } +} + +void radeon_get_cliprects(radeonContextPtr radeon, + struct drm_clip_rect **cliprects, + unsigned int *num_cliprects, + int *x_off, int *y_off) +{ + __DRIdrawablePrivate *dPriv = radeon->dri.drawable; + struct radeon_framebuffer *rfb = dPriv->driverPrivate; + + if (radeon->constant_cliprect) { + radeon->fboRect.x1 = 0; + radeon->fboRect.y1 = 0; + radeon->fboRect.x2 = radeon->glCtx->DrawBuffer->Width; + radeon->fboRect.y2 = radeon->glCtx->DrawBuffer->Height; + + *cliprects = &radeon->fboRect; + *num_cliprects = 1; + *x_off = 0; + *y_off = 0; + } else if (radeon->front_cliprects || + rfb->pf_active || dPriv->numBackClipRects == 0) { + *cliprects = dPriv->pClipRects; + *num_cliprects = dPriv->numClipRects; + *x_off = dPriv->x; + *y_off = dPriv->y; + } else { + *num_cliprects = dPriv->numBackClipRects; + *cliprects = dPriv->pBackClipRects; + *x_off = dPriv->backX; + *y_off = dPriv->backY; + } +} + +/** + * Update cliprects and scissors. + */ +void radeonSetCliprects(radeonContextPtr radeon) +{ + __DRIdrawablePrivate *const drawable = radeon->dri.drawable; + __DRIdrawablePrivate *const readable = radeon->dri.readable; + struct radeon_framebuffer *const draw_rfb = drawable->driverPrivate; + struct radeon_framebuffer *const read_rfb = readable->driverPrivate; + int x_off, y_off; + + radeon_get_cliprects(radeon, &radeon->pClipRects, + &radeon->numClipRects, &x_off, &y_off); + + if ((draw_rfb->base.Width != drawable->w) || + (draw_rfb->base.Height != drawable->h)) { + _mesa_resize_framebuffer(radeon->glCtx, &draw_rfb->base, + drawable->w, drawable->h); + draw_rfb->base.Initialized = GL_TRUE; + } + + if (drawable != readable) { + if ((read_rfb->base.Width != readable->w) || + (read_rfb->base.Height != readable->h)) { + _mesa_resize_framebuffer(radeon->glCtx, &read_rfb->base, + readable->w, readable->h); + read_rfb->base.Initialized = GL_TRUE; + } + } + + if (radeon->state.scissor.enabled) + radeonRecalcScissorRects(radeon); + +} + + + +void radeonUpdateScissor( GLcontext *ctx ) +{ + radeonContextPtr rmesa = RADEON_CONTEXT(ctx); + + if ( rmesa->dri.drawable ) { + __DRIdrawablePrivate *dPriv = rmesa->dri.drawable; + + int x = ctx->Scissor.X; + int y = dPriv->h - ctx->Scissor.Y - ctx->Scissor.Height; + int w = ctx->Scissor.X + ctx->Scissor.Width - 1; + int h = dPriv->h - ctx->Scissor.Y - 1; + + rmesa->state.scissor.rect.x1 = x + dPriv->x; + rmesa->state.scissor.rect.y1 = y + dPriv->y; + rmesa->state.scissor.rect.x2 = w + dPriv->x + 1; + rmesa->state.scissor.rect.y2 = h + dPriv->y + 1; + + radeonRecalcScissorRects( rmesa ); + } +} + +/* ============================================================= + * Scissoring + */ + +void radeonScissor(GLcontext* ctx, GLint x, GLint y, GLsizei w, GLsizei h) +{ + radeonContextPtr radeon = RADEON_CONTEXT(ctx); + if (ctx->Scissor.Enabled) { + /* We don't pipeline cliprect changes */ + radeon_firevertices(radeon); + radeonUpdateScissor(ctx); + } +} + + +/* ================================================================ + * SwapBuffers with client-side throttling + */ + +static uint32_t radeonGetLastFrame(radeonContextPtr radeon) +{ + drm_radeon_getparam_t gp; + int ret; + uint32_t frame = 0; + + gp.param = RADEON_PARAM_LAST_FRAME; + gp.value = (int *)&frame; + ret = drmCommandWriteRead(radeon->dri.fd, DRM_RADEON_GETPARAM, + &gp, sizeof(gp)); + if (ret) { + fprintf(stderr, "%s: drmRadeonGetParam: %d\n", __FUNCTION__, + ret); + exit(1); + } + + return frame; +} + +uint32_t radeonGetAge(radeonContextPtr radeon) +{ + drm_radeon_getparam_t gp; + int ret; + uint32_t age; + + gp.param = RADEON_PARAM_LAST_CLEAR; + gp.value = (int *)&age; + ret = drmCommandWriteRead(radeon->dri.fd, DRM_RADEON_GETPARAM, + &gp, sizeof(gp)); + if (ret) { + fprintf(stderr, "%s: drmRadeonGetParam: %d\n", __FUNCTION__, + ret); + exit(1); + } + + return age; +} + +static void radeonEmitIrqLocked(radeonContextPtr radeon) +{ + drm_radeon_irq_emit_t ie; + int ret; + + ie.irq_seq = &radeon->iw.irq_seq; + ret = drmCommandWriteRead(radeon->dri.fd, DRM_RADEON_IRQ_EMIT, + &ie, sizeof(ie)); + if (ret) { + fprintf(stderr, "%s: drmRadeonIrqEmit: %d\n", __FUNCTION__, + ret); + exit(1); + } +} + +static void radeonWaitIrq(radeonContextPtr radeon) +{ + int ret; + + do { + ret = drmCommandWrite(radeon->dri.fd, DRM_RADEON_IRQ_WAIT, + &radeon->iw, sizeof(radeon->iw)); + } while (ret && (errno == EINTR || errno == EBUSY)); + + if (ret) { + fprintf(stderr, "%s: drmRadeonIrqWait: %d\n", __FUNCTION__, + ret); + exit(1); + } +} + +static void radeonWaitForFrameCompletion(radeonContextPtr radeon) +{ + drm_radeon_sarea_t *sarea = radeon->sarea; + + if (radeon->do_irqs) { + if (radeonGetLastFrame(radeon) < sarea->last_frame) { + if (!radeon->irqsEmitted) { + while (radeonGetLastFrame(radeon) < + sarea->last_frame) ; + } else { + UNLOCK_HARDWARE(radeon); + radeonWaitIrq(radeon); + LOCK_HARDWARE(radeon); + } + radeon->irqsEmitted = 10; + } + + if (radeon->irqsEmitted) { + radeonEmitIrqLocked(radeon); + radeon->irqsEmitted--; + } + } else { + while (radeonGetLastFrame(radeon) < sarea->last_frame) { + UNLOCK_HARDWARE(radeon); + if (radeon->do_usleeps) + DO_USLEEP(1); + LOCK_HARDWARE(radeon); + } + } +} + +/* wait for idle */ +void radeonWaitForIdleLocked(radeonContextPtr radeon) +{ + int ret; + int i = 0; + + do { + ret = drmCommandNone(radeon->dri.fd, DRM_RADEON_CP_IDLE); + if (ret) + DO_USLEEP(1); + } while (ret && ++i < 100); + + if (ret < 0) { + UNLOCK_HARDWARE(radeon); + fprintf(stderr, "Error: R300 timed out... exiting\n"); + exit(-1); + } +} + +static void radeonWaitForIdle(radeonContextPtr radeon) +{ + if (!radeon->radeonScreen->driScreen->dri2.enabled) { + LOCK_HARDWARE(radeon); + radeonWaitForIdleLocked(radeon); + UNLOCK_HARDWARE(radeon); + } +} + +static void radeon_flip_renderbuffers(struct radeon_framebuffer *rfb) +{ + int current_page = rfb->pf_current_page; + int next_page = (current_page + 1) % rfb->pf_num_pages; + struct gl_renderbuffer *tmp_rb; + + /* Exchange renderbuffers if necessary but make sure their + * reference counts are preserved. + */ + if (rfb->color_rb[current_page] && + rfb->base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer != + &rfb->color_rb[current_page]->base) { + tmp_rb = NULL; + _mesa_reference_renderbuffer(&tmp_rb, + rfb->base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer); + tmp_rb = &rfb->color_rb[current_page]->base; + _mesa_reference_renderbuffer(&rfb->base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer, tmp_rb); + _mesa_reference_renderbuffer(&tmp_rb, NULL); + } + + if (rfb->color_rb[next_page] && + rfb->base.Attachment[BUFFER_BACK_LEFT].Renderbuffer != + &rfb->color_rb[next_page]->base) { + tmp_rb = NULL; + _mesa_reference_renderbuffer(&tmp_rb, + rfb->base.Attachment[BUFFER_BACK_LEFT].Renderbuffer); + tmp_rb = &rfb->color_rb[next_page]->base; + _mesa_reference_renderbuffer(&rfb->base.Attachment[BUFFER_BACK_LEFT].Renderbuffer, tmp_rb); + _mesa_reference_renderbuffer(&tmp_rb, NULL); + } +} + +/* Copy the back color buffer to the front color buffer. + */ +void radeonCopyBuffer( __DRIdrawablePrivate *dPriv, + const drm_clip_rect_t *rect) +{ + radeonContextPtr rmesa; + struct radeon_framebuffer *rfb; + GLint nbox, i, ret; + + assert(dPriv); + assert(dPriv->driContextPriv); + assert(dPriv->driContextPriv->driverPrivate); + + rmesa = (radeonContextPtr) dPriv->driContextPriv->driverPrivate; + + LOCK_HARDWARE(rmesa); + + rfb = dPriv->driverPrivate; + + if ( RADEON_DEBUG & DEBUG_IOCTL ) { + fprintf( stderr, "\n%s( %p )\n\n", __FUNCTION__, (void *) rmesa->glCtx ); + } + + nbox = dPriv->numClipRects; /* must be in locked region */ + + for ( i = 0 ; i < nbox ; ) { + GLint nr = MIN2( i + RADEON_NR_SAREA_CLIPRECTS , nbox ); + drm_clip_rect_t *box = dPriv->pClipRects; + drm_clip_rect_t *b = rmesa->sarea->boxes; + GLint n = 0; + + for ( ; i < nr ; i++ ) { + + *b = box[i]; + + if (rect) + { + if (rect->x1 > b->x1) + b->x1 = rect->x1; + if (rect->y1 > b->y1) + b->y1 = rect->y1; + if (rect->x2 < b->x2) + b->x2 = rect->x2; + if (rect->y2 < b->y2) + b->y2 = rect->y2; + + if (b->x1 >= b->x2 || b->y1 >= b->y2) + continue; + } + + b++; + n++; + } + rmesa->sarea->nbox = n; + + if (!n) + continue; + + ret = drmCommandNone( rmesa->dri.fd, DRM_RADEON_SWAP ); + + if ( ret ) { + fprintf( stderr, "DRM_RADEON_SWAP_BUFFERS: return = %d\n", ret ); + UNLOCK_HARDWARE( rmesa ); + exit( 1 ); + } + } + + UNLOCK_HARDWARE( rmesa ); +} + +static int radeonScheduleSwap(__DRIdrawablePrivate *dPriv, GLboolean *missed_target) +{ + radeonContextPtr rmesa; + + rmesa = (radeonContextPtr) dPriv->driContextPriv->driverPrivate; + radeon_firevertices(rmesa); + + LOCK_HARDWARE( rmesa ); + + if (!dPriv->numClipRects) { + UNLOCK_HARDWARE(rmesa); + usleep(10000); /* throttle invisible client 10ms */ + return 0; + } + + radeonWaitForFrameCompletion(rmesa); + + UNLOCK_HARDWARE(rmesa); + driWaitForVBlank(dPriv, missed_target); + + return 0; +} + +static GLboolean radeonPageFlip( __DRIdrawablePrivate *dPriv ) +{ + radeonContextPtr radeon; + GLint ret; + __DRIscreenPrivate *psp; + struct radeon_renderbuffer *rrb; + struct radeon_framebuffer *rfb; + + assert(dPriv); + assert(dPriv->driContextPriv); + assert(dPriv->driContextPriv->driverPrivate); + + radeon = (radeonContextPtr) dPriv->driContextPriv->driverPrivate; + rfb = dPriv->driverPrivate; + rrb = (void *)rfb->base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer; + + psp = dPriv->driScreenPriv; + + LOCK_HARDWARE(radeon); + + if ( RADEON_DEBUG & DEBUG_IOCTL ) { + fprintf(stderr, "%s: pfCurrentPage: %d %d\n", __FUNCTION__, + radeon->sarea->pfCurrentPage, radeon->sarea->pfState); + } + drm_clip_rect_t *box = dPriv->pClipRects; + drm_clip_rect_t *b = radeon->sarea->boxes; + b[0] = box[0]; + radeon->sarea->nbox = 1; + + ret = drmCommandNone( radeon->dri.fd, DRM_RADEON_FLIP ); + + UNLOCK_HARDWARE(radeon); + + if ( ret ) { + fprintf( stderr, "DRM_RADEON_FLIP: return = %d\n", ret ); + return GL_FALSE; + } + + if (!rfb->pf_active) + return GL_FALSE; + + rfb->pf_current_page = radeon->sarea->pfCurrentPage; + radeon_flip_renderbuffers(rfb); + radeon_draw_buffer(radeon->glCtx, &rfb->base); + + return GL_TRUE; +} + + +/** + * Swap front and back buffer. + */ +void radeonSwapBuffers(__DRIdrawablePrivate * dPriv) +{ + int64_t ust; + __DRIscreenPrivate *psp; + + if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) { + radeonContextPtr radeon; + GLcontext *ctx; + + radeon = (radeonContextPtr) dPriv->driContextPriv->driverPrivate; + ctx = radeon->glCtx; + + if (ctx->Visual.doubleBufferMode) { + GLboolean missed_target; + struct radeon_framebuffer *rfb = dPriv->driverPrivate; + _mesa_notifySwapBuffers(ctx);/* flush pending rendering comands */ + + radeonScheduleSwap(dPriv, &missed_target); + + if (rfb->pf_active) { + radeonPageFlip(dPriv); + } else { + radeonCopyBuffer(dPriv, NULL); + } + + psp = dPriv->driScreenPriv; + + rfb->swap_count++; + (*psp->systemTime->getUST)( & ust ); + if ( missed_target ) { + rfb->swap_missed_count++; + rfb->swap_missed_ust = ust - rfb->swap_ust; + } + + rfb->swap_ust = ust; + radeon->hw.all_dirty = GL_TRUE; + } + } else { + /* XXX this shouldn't be an error but we can't handle it for now */ + _mesa_problem(NULL, "%s: drawable has no context!", + __FUNCTION__); + } +} + +void radeonCopySubBuffer(__DRIdrawablePrivate * dPriv, + int x, int y, int w, int h ) +{ + if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) { + radeonContextPtr radeon; + GLcontext *ctx; + + radeon = (radeonContextPtr) dPriv->driContextPriv->driverPrivate; + ctx = radeon->glCtx; + + 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 */ + radeonCopyBuffer(dPriv, &rect); + } + } else { + /* XXX this shouldn't be an error but we can't handle it for now */ + _mesa_problem(NULL, "%s: drawable has no context!", + __FUNCTION__); + } +} + +void radeon_draw_buffer(GLcontext *ctx, struct gl_framebuffer *fb) +{ + radeonContextPtr radeon = RADEON_CONTEXT(ctx); + struct radeon_renderbuffer *rrbDepth = NULL, *rrbStencil = NULL, + *rrbColor = NULL; + uint32_t offset = 0; + + + if (!fb) { + /* this can happen during the initial context initialization */ + return; + } + + /* radeons only handle 1 color draw so far */ + if (fb->_NumColorDrawBuffers != 1) { + radeon->vtbl.fallback(ctx, RADEON_FALLBACK_DRAW_BUFFER, GL_TRUE); + 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) + ;/* do something depthy/stencily TODO */ + + + /* none */ + if (fb->Name == 0) { + if (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT) { + rrbColor = radeon_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer); + radeon->front_cliprects = GL_TRUE; + } else { + rrbColor = radeon_renderbuffer(fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer); + radeon->front_cliprects = GL_FALSE; + } + } else { + /* user FBO in theory */ + struct radeon_renderbuffer *rrb; + rrb = radeon_renderbuffer(fb->_ColorDrawBuffers[0]); + if (rrb) { + offset = rrb->draw_offset; + rrbColor = rrb; + } + radeon->constant_cliprect = GL_TRUE; + } + + if (rrbColor == NULL) + radeon->vtbl.fallback(ctx, RADEON_FALLBACK_DRAW_BUFFER, GL_TRUE); + else + radeon->vtbl.fallback(ctx, RADEON_FALLBACK_DRAW_BUFFER, GL_FALSE); + + + if (fb->_DepthBuffer && fb->_DepthBuffer->Wrapped) { + rrbDepth = radeon_renderbuffer(fb->_DepthBuffer->Wrapped); + if (rrbDepth && rrbDepth->bo) { + radeon->vtbl.fallback(ctx, RADEON_FALLBACK_DEPTH_BUFFER, GL_FALSE); + } else { + radeon->vtbl.fallback(ctx, RADEON_FALLBACK_DEPTH_BUFFER, GL_TRUE); + } + } else { + radeon->vtbl.fallback(ctx, RADEON_FALLBACK_DEPTH_BUFFER, GL_FALSE); + rrbDepth = NULL; + } + + if (fb->_StencilBuffer && fb->_StencilBuffer->Wrapped) { + rrbStencil = radeon_renderbuffer(fb->_DepthBuffer->Wrapped); + if (rrbStencil && rrbStencil->bo) { + radeon->vtbl.fallback(ctx, RADEON_FALLBACK_STENCIL_BUFFER, GL_FALSE); + /* need to re-compute stencil hw state */ + if (!rrbDepth) + rrbDepth = rrbStencil; + } else { + radeon->vtbl.fallback(ctx, RADEON_FALLBACK_STENCIL_BUFFER, GL_TRUE); + } + } else { + radeon->vtbl.fallback(ctx, RADEON_FALLBACK_STENCIL_BUFFER, GL_FALSE); + if (ctx->Driver.Enable != NULL) + ctx->Driver.Enable(ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled); + else + ctx->NewState |= _NEW_STENCIL; + } + + /* Update culling direction which changes depending on the + * orientation of the buffer: + */ + if (ctx->Driver.FrontFace) + ctx->Driver.FrontFace(ctx, ctx->Polygon.FrontFace); + else + ctx->NewState |= _NEW_POLYGON; + + /* + * Update depth test state + */ + if (ctx->Driver.Enable) { + ctx->Driver.Enable(ctx, GL_DEPTH_TEST, + (ctx->Depth.Test && fb->Visual.depthBits > 0)); + ctx->Driver.Enable(ctx, GL_STENCIL_TEST, + (ctx->Stencil._Enabled && fb->Visual.stencilBits > 0)); + } else { + ctx->NewState |= (_NEW_DEPTH | _NEW_STENCIL); + } + + radeon->state.depth.rrb = rrbDepth; + radeon->state.color.rrb = rrbColor; + radeon->state.color.draw_offset = offset; + +#if 0 + /* update viewport since it depends on window size */ + if (ctx->Driver.Viewport) { + ctx->Driver.Viewport(ctx, ctx->Viewport.X, ctx->Viewport.Y, + ctx->Viewport.Width, ctx->Viewport.Height); + } else { + + } +#endif + ctx->NewState |= _NEW_VIEWPORT; + + /* Set state we know depends on drawable parameters: + */ + if (ctx->Driver.Scissor) + ctx->Driver.Scissor(ctx, ctx->Scissor.X, ctx->Scissor.Y, + ctx->Scissor.Width, ctx->Scissor.Height); + radeon->NewGLState |= _NEW_SCISSOR; + + if (ctx->Driver.DepthRange) + ctx->Driver.DepthRange(ctx, + ctx->Viewport.Near, + ctx->Viewport.Far); + + /* Update culling direction which changes depending on the + * orientation of the buffer: + */ + if (ctx->Driver.FrontFace) + ctx->Driver.FrontFace(ctx, ctx->Polygon.FrontFace); + else + ctx->NewState |= _NEW_POLYGON; +} + +/** + * Called via glDrawBuffer. + */ +void radeonDrawBuffer( GLcontext *ctx, GLenum mode ) +{ + if (RADEON_DEBUG & DEBUG_DRI) + fprintf(stderr, "%s %s\n", __FUNCTION__, + _mesa_lookup_enum_by_nr( mode )); + + radeon_draw_buffer(ctx, ctx->DrawBuffer); +} + +void radeonReadBuffer( GLcontext *ctx, GLenum mode ) +{ + /* nothing, until we implement h/w glRead/CopyPixels or CopyTexImage */ + 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. + */ + radeon_draw_buffer(ctx, ctx->DrawBuffer); + } +} + + +/* Turn on/off page flipping according to the flags in the sarea: + */ +void radeonUpdatePageFlipping(radeonContextPtr radeon) +{ + struct radeon_framebuffer *rfb = radeon->dri.drawable->driverPrivate; + + rfb->pf_active = radeon->sarea->pfState; + rfb->pf_current_page = radeon->sarea->pfCurrentPage; + rfb->pf_num_pages = 2; + radeon_flip_renderbuffers(rfb); + radeon_draw_buffer(radeon->glCtx, radeon->glCtx->DrawBuffer); +} + +void radeon_window_moved(radeonContextPtr radeon) +{ + if (!radeon->radeonScreen->driScreen->dri2.enabled) { + radeonUpdatePageFlipping(radeon); + } + radeonSetCliprects(radeon); +} + +void radeon_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height) +{ + radeonContextPtr radeon = RADEON_CONTEXT(ctx); + __DRIcontext *driContext = radeon->dri.context; + void (*old_viewport)(GLcontext *ctx, GLint x, GLint y, + GLsizei w, GLsizei h); + + if (!driContext->driScreenPriv->dri2.enabled) + return; + + radeon_update_renderbuffers(driContext, driContext->driDrawablePriv); + if (driContext->driDrawablePriv != driContext->driReadablePriv) + radeon_update_renderbuffers(driContext, driContext->driReadablePriv); + + old_viewport = ctx->Driver.Viewport; + ctx->Driver.Viewport = NULL; + radeon->dri.drawable = driContext->driDrawablePriv; + radeon_window_moved(radeon); + radeon_draw_buffer(ctx, radeon->glCtx->DrawBuffer); + ctx->Driver.Viewport = old_viewport; + + +} +static void radeon_print_state_atom(radeonContextPtr radeon, struct radeon_state_atom *state ) +{ + int i; + int dwords = (*state->check)(radeon->glCtx, state); + + fprintf(stderr, "emit %s %d/%d\n", state->name, state->cmd_size, dwords); + + if (RADEON_DEBUG & DEBUG_VERBOSE) + for (i = 0 ; i < dwords; i++) + fprintf(stderr, "\t%s[%d]: %x\n", state->name, i, state->cmd[i]); + +} + +static INLINE void radeonEmitAtoms(radeonContextPtr radeon, GLboolean dirty) +{ + BATCH_LOCALS(radeon); + struct radeon_state_atom *atom; + int dwords; + + if (radeon->vtbl.pre_emit_atoms) + radeon->vtbl.pre_emit_atoms(radeon); + + /* Emit actual atoms */ + foreach(atom, &radeon->hw.atomlist) { + if ((atom->dirty || radeon->hw.all_dirty) == dirty) { + dwords = (*atom->check) (radeon->glCtx, atom); + if (dwords) { + if (DEBUG_CMDBUF && RADEON_DEBUG & DEBUG_STATE) { + radeon_print_state_atom(radeon, atom); + } + if (atom->emit) { + (*atom->emit)(radeon->glCtx, atom); + } else { + BEGIN_BATCH_NO_AUTOSTATE(dwords); + OUT_BATCH_TABLE(atom->cmd, dwords); + END_BATCH(); + } + atom->dirty = GL_FALSE; + } else { + if (DEBUG_CMDBUF && RADEON_DEBUG & DEBUG_STATE) { + fprintf(stderr, " skip state %s\n", + atom->name); + } + } + } + } + + COMMIT_BATCH(); +} + +GLboolean radeon_revalidate_bos(GLcontext *ctx) +{ + radeonContextPtr radeon = RADEON_CONTEXT(ctx); + int flushed = 0; + int ret; +again: + ret = radeon_cs_space_check(radeon->cmdbuf.cs, radeon->state.bos, radeon->state.validated_bo_count); + if (ret == RADEON_CS_SPACE_OP_TO_BIG) + return GL_FALSE; + if (ret == RADEON_CS_SPACE_FLUSH) { + radeonFlush(ctx); + if (flushed) + return GL_FALSE; + flushed = 1; + goto again; + } + return GL_TRUE; +} + +void radeon_validate_reset_bos(radeonContextPtr radeon) +{ + int i; + + for (i = 0; i < radeon->state.validated_bo_count; i++) { + radeon_bo_unref(radeon->state.bos[i].bo); + radeon->state.bos[i].bo = NULL; + radeon->state.bos[i].read_domains = 0; + radeon->state.bos[i].write_domain = 0; + radeon->state.bos[i].new_accounted = 0; + } + radeon->state.validated_bo_count = 0; +} + +void radeon_validate_bo(radeonContextPtr radeon, struct radeon_bo *bo, uint32_t read_domains, uint32_t write_domain) +{ + radeon_bo_ref(bo); + radeon->state.bos[radeon->state.validated_bo_count].bo = bo; + radeon->state.bos[radeon->state.validated_bo_count].read_domains = read_domains; + radeon->state.bos[radeon->state.validated_bo_count].write_domain = write_domain; + radeon->state.bos[radeon->state.validated_bo_count].new_accounted = 0; + radeon->state.validated_bo_count++; + + assert(radeon->state.validated_bo_count < RADEON_MAX_BOS); +} + +void radeonEmitState(radeonContextPtr radeon) +{ + if (RADEON_DEBUG & (DEBUG_STATE|DEBUG_PRIMS)) + fprintf(stderr, "%s\n", __FUNCTION__); + + if (radeon->vtbl.pre_emit_state) + radeon->vtbl.pre_emit_state(radeon); + + /* this code used to return here but now it emits zbs */ + if (radeon->cmdbuf.cs->cdw && !radeon->hw.is_dirty && !radeon->hw.all_dirty) + return; + + /* To avoid going across the entire set of states multiple times, just check + * for enough space for the case of emitting all state, and inline the + * radeonAllocCmdBuf code here without all the checks. + */ + rcommonEnsureCmdBufSpace(radeon, radeon->hw.max_state_size, __FUNCTION__); + + if (!radeon->cmdbuf.cs->cdw) { + if (RADEON_DEBUG & DEBUG_STATE) + fprintf(stderr, "Begin reemit state\n"); + + radeonEmitAtoms(radeon, GL_FALSE); + } + + if (RADEON_DEBUG & DEBUG_STATE) + fprintf(stderr, "Begin dirty state\n"); + + radeonEmitAtoms(radeon, GL_TRUE); + radeon->hw.is_dirty = GL_FALSE; + radeon->hw.all_dirty = GL_FALSE; + +} + + +void radeonFlush(GLcontext *ctx) +{ + radeonContextPtr radeon = RADEON_CONTEXT(ctx); + if (RADEON_DEBUG & DEBUG_IOCTL) + fprintf(stderr, "%s %d\n", __FUNCTION__, radeon->cmdbuf.cs->cdw); + + /* okay if we have no cmds in the buffer && + we have no DMA flush && + we have no DMA buffer allocated. + then no point flushing anything at all. + */ + if (!radeon->dma.flush && !radeon->cmdbuf.cs->cdw && !radeon->dma.current) + return; + + if (radeon->dma.flush) + radeon->dma.flush( ctx ); + + radeonEmitState(radeon); + + if (radeon->cmdbuf.cs->cdw) + rcommonFlushCmdBuf(radeon, __FUNCTION__); +} + +/* Make sure all commands have been sent to the hardware and have + * completed processing. + */ +void radeonFinish(GLcontext * ctx) +{ + radeonContextPtr radeon = RADEON_CONTEXT(ctx); + struct gl_framebuffer *fb = ctx->DrawBuffer; + int i; + + radeonFlush(ctx); + + if (radeon->radeonScreen->kernel_mm) { + for (i = 0; i < fb->_NumColorDrawBuffers; i++) { + struct radeon_renderbuffer *rrb; + rrb = radeon_renderbuffer(fb->_ColorDrawBuffers[i]); + if (rrb && rrb->bo) + radeon_bo_wait(rrb->bo); + } + { + struct radeon_renderbuffer *rrb; + rrb = radeon_get_depthbuffer(radeon); + if (rrb && rrb->bo) + radeon_bo_wait(rrb->bo); + } + } else if (radeon->do_irqs) { + LOCK_HARDWARE(radeon); + radeonEmitIrqLocked(radeon); + UNLOCK_HARDWARE(radeon); + radeonWaitIrq(radeon); + } else { + radeonWaitForIdle(radeon); + } +} + +/* cmdbuffer */ +/** + * Send the current command buffer via ioctl to the hardware. + */ +int rcommonFlushCmdBufLocked(radeonContextPtr rmesa, const char *caller) +{ + int ret = 0; + + if (rmesa->cmdbuf.flushing) { + fprintf(stderr, "Recursive call into r300FlushCmdBufLocked!\n"); + exit(-1); + } + rmesa->cmdbuf.flushing = 1; + + if (RADEON_DEBUG & DEBUG_IOCTL) { + fprintf(stderr, "%s from %s - %i cliprects\n", + __FUNCTION__, caller, rmesa->numClipRects); + } + + if (rmesa->cmdbuf.cs->cdw) { + ret = radeon_cs_emit(rmesa->cmdbuf.cs); + rmesa->hw.all_dirty = GL_TRUE; + } + radeon_cs_erase(rmesa->cmdbuf.cs); + rmesa->cmdbuf.flushing = 0; + + if (radeon_revalidate_bos(rmesa->glCtx) == GL_FALSE) { + fprintf(stderr,"failed to revalidate buffers\n"); + } + + return ret; +} + +int rcommonFlushCmdBuf(radeonContextPtr rmesa, const char *caller) +{ + int ret; + + radeonReleaseDmaRegion(rmesa); + + LOCK_HARDWARE(rmesa); + ret = rcommonFlushCmdBufLocked(rmesa, caller); + UNLOCK_HARDWARE(rmesa); + + if (ret) { + fprintf(stderr, "drmRadeonCmdBuffer: %d\n", ret); + _mesa_exit(ret); + } + + return ret; +} + +/** + * Make sure that enough space is available in the command buffer + * by flushing if necessary. + * + * \param dwords The number of dwords we need to be free on the command buffer + */ +void rcommonEnsureCmdBufSpace(radeonContextPtr rmesa, int dwords, const char *caller) +{ + if ((rmesa->cmdbuf.cs->cdw + dwords + 128) > rmesa->cmdbuf.size || + radeon_cs_need_flush(rmesa->cmdbuf.cs)) { + rcommonFlushCmdBuf(rmesa, caller); + } +} + +void rcommonInitCmdBuf(radeonContextPtr rmesa) +{ + GLuint size; + /* Initialize command buffer */ + size = 256 * driQueryOptioni(&rmesa->optionCache, + "command_buffer_size"); + if (size < 2 * rmesa->hw.max_state_size) { + size = 2 * rmesa->hw.max_state_size + 65535; + } + if (size > 64 * 256) + size = 64 * 256; + + if (RADEON_DEBUG & (DEBUG_IOCTL | DEBUG_DMA)) { + fprintf(stderr, "sizeof(drm_r300_cmd_header_t)=%zd\n", + sizeof(drm_r300_cmd_header_t)); + fprintf(stderr, "sizeof(drm_radeon_cmd_buffer_t)=%zd\n", + sizeof(drm_radeon_cmd_buffer_t)); + fprintf(stderr, + "Allocating %d bytes command buffer (max state is %d bytes)\n", + size * 4, rmesa->hw.max_state_size * 4); + } + + if (rmesa->radeonScreen->kernel_mm) { + int fd = rmesa->radeonScreen->driScreen->fd; + rmesa->cmdbuf.csm = radeon_cs_manager_gem_ctor(fd); + } else { + rmesa->cmdbuf.csm = radeon_cs_manager_legacy_ctor(rmesa); + } + if (rmesa->cmdbuf.csm == NULL) { + /* FIXME: fatal error */ + return; + } + rmesa->cmdbuf.cs = radeon_cs_create(rmesa->cmdbuf.csm, size); + assert(rmesa->cmdbuf.cs != NULL); + rmesa->cmdbuf.size = size; + + if (!rmesa->radeonScreen->kernel_mm) { + radeon_cs_set_limit(rmesa->cmdbuf.cs, RADEON_GEM_DOMAIN_VRAM, rmesa->radeonScreen->texSize[0]); + radeon_cs_set_limit(rmesa->cmdbuf.cs, RADEON_GEM_DOMAIN_GTT, rmesa->radeonScreen->gartTextures.size); + } else { + struct drm_radeon_gem_info mminfo; + + if (!drmCommandWriteRead(rmesa->dri.fd, DRM_RADEON_GEM_INFO, &mminfo, sizeof(mminfo))) + { + radeon_cs_set_limit(rmesa->cmdbuf.cs, RADEON_GEM_DOMAIN_VRAM, mminfo.vram_visible); + radeon_cs_set_limit(rmesa->cmdbuf.cs, RADEON_GEM_DOMAIN_GTT, mminfo.gart_size); + } + } + +} +/** + * Destroy the command buffer + */ +void rcommonDestroyCmdBuf(radeonContextPtr rmesa) +{ + radeon_cs_destroy(rmesa->cmdbuf.cs); + if (rmesa->radeonScreen->driScreen->dri2.enabled || rmesa->radeonScreen->kernel_mm) { + radeon_cs_manager_gem_dtor(rmesa->cmdbuf.csm); + } else { + radeon_cs_manager_legacy_dtor(rmesa->cmdbuf.csm); + } +} + +void rcommonBeginBatch(radeonContextPtr rmesa, int n, + int dostate, + const char *file, + const char *function, + int line) +{ + rcommonEnsureCmdBufSpace(rmesa, n, function); + if (!rmesa->cmdbuf.cs->cdw && dostate) { + if (RADEON_DEBUG & DEBUG_IOCTL) + fprintf(stderr, "Reemit state after flush (from %s)\n", function); + radeonEmitState(rmesa); + } + radeon_cs_begin(rmesa->cmdbuf.cs, n, file, function, line); + + if (DEBUG_CMDBUF && RADEON_DEBUG & DEBUG_IOCTL) + fprintf(stderr, "BEGIN_BATCH(%d) at %d, from %s:%i\n", + n, rmesa->cmdbuf.cs->cdw, function, line); + +} + + + +static void +radeon_meta_set_passthrough_transform(radeonContextPtr radeon) +{ + GLcontext *ctx = radeon->glCtx; + + radeon->meta.saved_vp_x = ctx->Viewport.X; + radeon->meta.saved_vp_y = ctx->Viewport.Y; + radeon->meta.saved_vp_width = ctx->Viewport.Width; + radeon->meta.saved_vp_height = ctx->Viewport.Height; + radeon->meta.saved_matrix_mode = ctx->Transform.MatrixMode; + + _mesa_Viewport(0, 0, ctx->DrawBuffer->Width, ctx->DrawBuffer->Height); + + _mesa_MatrixMode(GL_PROJECTION); + _mesa_PushMatrix(); + _mesa_LoadIdentity(); + _mesa_Ortho(0, ctx->DrawBuffer->Width, 0, ctx->DrawBuffer->Height, 1, -1); + + _mesa_MatrixMode(GL_MODELVIEW); + _mesa_PushMatrix(); + _mesa_LoadIdentity(); +} + +static void +radeon_meta_restore_transform(radeonContextPtr radeon) +{ + _mesa_MatrixMode(GL_PROJECTION); + _mesa_PopMatrix(); + _mesa_MatrixMode(GL_MODELVIEW); + _mesa_PopMatrix(); + + _mesa_MatrixMode(radeon->meta.saved_matrix_mode); + + _mesa_Viewport(radeon->meta.saved_vp_x, radeon->meta.saved_vp_y, + radeon->meta.saved_vp_width, radeon->meta.saved_vp_height); +} + + +/** + * Perform glClear where mask contains only color, depth, and/or stencil. + * + * The implementation is based on calling into Mesa to set GL state and + * performing normal triangle rendering. The intent of this path is to + * have as generic a path as possible, so that any driver could make use of + * it. + */ + + +void radeon_clear_tris(GLcontext *ctx, GLbitfield mask) +{ + radeonContextPtr rmesa = RADEON_CONTEXT(ctx); + GLfloat vertices[4][3]; + GLfloat color[4][4]; + GLfloat dst_z; + struct gl_framebuffer *fb = ctx->DrawBuffer; + int i; + GLboolean saved_fp_enable = GL_FALSE, saved_vp_enable = GL_FALSE; + GLboolean saved_shader_program = 0; + unsigned int saved_active_texture; + + assert((mask & ~(TRI_CLEAR_COLOR_BITS | BUFFER_BIT_DEPTH | + BUFFER_BIT_STENCIL)) == 0); + + _mesa_PushAttrib(GL_COLOR_BUFFER_BIT | + GL_CURRENT_BIT | + GL_DEPTH_BUFFER_BIT | + GL_ENABLE_BIT | + GL_POLYGON_BIT | + GL_STENCIL_BUFFER_BIT | + GL_TRANSFORM_BIT | + GL_CURRENT_BIT); + _mesa_PushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT); + saved_active_texture = ctx->Texture.CurrentUnit; + + /* Disable existing GL state we don't want to apply to a clear. */ + _mesa_Disable(GL_ALPHA_TEST); + _mesa_Disable(GL_BLEND); + _mesa_Disable(GL_CULL_FACE); + _mesa_Disable(GL_FOG); + _mesa_Disable(GL_POLYGON_SMOOTH); + _mesa_Disable(GL_POLYGON_STIPPLE); + _mesa_Disable(GL_POLYGON_OFFSET_FILL); + _mesa_Disable(GL_LIGHTING); + _mesa_Disable(GL_CLIP_PLANE0); + _mesa_Disable(GL_CLIP_PLANE1); + _mesa_Disable(GL_CLIP_PLANE2); + _mesa_Disable(GL_CLIP_PLANE3); + _mesa_Disable(GL_CLIP_PLANE4); + _mesa_Disable(GL_CLIP_PLANE5); + _mesa_PolygonMode(GL_FRONT_AND_BACK, GL_FILL); + if (ctx->Extensions.ARB_fragment_program && ctx->FragmentProgram.Enabled) { + saved_fp_enable = GL_TRUE; + _mesa_Disable(GL_FRAGMENT_PROGRAM_ARB); + } + if (ctx->Extensions.ARB_vertex_program && ctx->VertexProgram.Enabled) { + saved_vp_enable = GL_TRUE; + _mesa_Disable(GL_VERTEX_PROGRAM_ARB); + } + if (ctx->Extensions.ARB_shader_objects && ctx->Shader.CurrentProgram) { + saved_shader_program = ctx->Shader.CurrentProgram->Name; + _mesa_UseProgramObjectARB(0); + } + + if (ctx->Texture._EnabledUnits != 0) { + int i; + + for (i = 0; i < ctx->Const.MaxTextureUnits; i++) { + _mesa_ActiveTextureARB(GL_TEXTURE0 + i); + _mesa_Disable(GL_TEXTURE_1D); + _mesa_Disable(GL_TEXTURE_2D); + _mesa_Disable(GL_TEXTURE_3D); + if (ctx->Extensions.ARB_texture_cube_map) + _mesa_Disable(GL_TEXTURE_CUBE_MAP_ARB); + if (ctx->Extensions.NV_texture_rectangle) + _mesa_Disable(GL_TEXTURE_RECTANGLE_NV); + if (ctx->Extensions.MESA_texture_array) { + _mesa_Disable(GL_TEXTURE_1D_ARRAY_EXT); + _mesa_Disable(GL_TEXTURE_2D_ARRAY_EXT); + } + } + } + +#if FEATURE_ARB_vertex_buffer_object + _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, 0); + _mesa_BindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0); +#endif + + radeon_meta_set_passthrough_transform(rmesa); + + for (i = 0; i < 4; i++) { + color[i][0] = ctx->Color.ClearColor[0]; + color[i][1] = ctx->Color.ClearColor[1]; + color[i][2] = ctx->Color.ClearColor[2]; + color[i][3] = ctx->Color.ClearColor[3]; + } + + /* convert clear Z from [0,1] to NDC coord in [-1,1] */ + + dst_z = -1.0 + 2.0 * ctx->Depth.Clear; + /* Prepare the vertices, which are the same regardless of which buffer we're + * drawing to. + */ + vertices[0][0] = fb->_Xmin; + vertices[0][1] = fb->_Ymin; + vertices[0][2] = dst_z; + vertices[1][0] = fb->_Xmax; + vertices[1][1] = fb->_Ymin; + vertices[1][2] = dst_z; + vertices[2][0] = fb->_Xmax; + vertices[2][1] = fb->_Ymax; + vertices[2][2] = dst_z; + vertices[3][0] = fb->_Xmin; + vertices[3][1] = fb->_Ymax; + vertices[3][2] = dst_z; + + _mesa_ColorPointer(4, GL_FLOAT, 4 * sizeof(GLfloat), &color); + _mesa_VertexPointer(3, GL_FLOAT, 3 * sizeof(GLfloat), &vertices); + _mesa_Enable(GL_COLOR_ARRAY); + _mesa_Enable(GL_VERTEX_ARRAY); + + while (mask != 0) { + GLuint this_mask = 0; + GLuint color_bit; + + color_bit = _mesa_ffs(mask & TRI_CLEAR_COLOR_BITS); + if (color_bit != 0) + this_mask |= (1 << (color_bit - 1)); + + /* Clear depth/stencil in the same pass as color. */ + this_mask |= (mask & (BUFFER_BIT_DEPTH | BUFFER_BIT_STENCIL)); + + /* Select the current color buffer and use the color write mask if + * we have one, otherwise don't write any color channels. + */ + if (this_mask & BUFFER_BIT_FRONT_LEFT) + _mesa_DrawBuffer(GL_FRONT_LEFT); + else if (this_mask & BUFFER_BIT_BACK_LEFT) + _mesa_DrawBuffer(GL_BACK_LEFT); + else if (color_bit != 0) + _mesa_DrawBuffer(GL_COLOR_ATTACHMENT0 + + (color_bit - BUFFER_COLOR0 - 1)); + else + _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); + + /* Control writing of the depth clear value to depth. */ + if (this_mask & BUFFER_BIT_DEPTH) { + _mesa_DepthFunc(GL_ALWAYS); + _mesa_DepthMask(GL_TRUE); + _mesa_Enable(GL_DEPTH_TEST); + } else { + _mesa_Disable(GL_DEPTH_TEST); + _mesa_DepthMask(GL_FALSE); + } + + /* Control writing of the stencil clear value to stencil. */ + if (this_mask & BUFFER_BIT_STENCIL) { + _mesa_Enable(GL_STENCIL_TEST); + _mesa_StencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE); + _mesa_StencilFuncSeparate(GL_FRONT, GL_ALWAYS, ctx->Stencil.Clear, + ctx->Stencil.WriteMask[0]); + } else { + _mesa_Disable(GL_STENCIL_TEST); + } + + CALL_DrawArrays(ctx->Exec, (GL_TRIANGLE_FAN, 0, 4)); + + mask &= ~this_mask; + } + + radeon_meta_restore_transform(rmesa); + + _mesa_ActiveTextureARB(GL_TEXTURE0 + saved_active_texture); + if (saved_fp_enable) + _mesa_Enable(GL_FRAGMENT_PROGRAM_ARB); + if (saved_vp_enable) + _mesa_Enable(GL_VERTEX_PROGRAM_ARB); + + if (saved_shader_program) + _mesa_UseProgramObjectARB(saved_shader_program); + + _mesa_PopClientAttrib(); + _mesa_PopAttrib(); +} |