| /********************************************************** |
| * Copyright 2008-2009 VMware, Inc. 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, 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 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 AUTHORS OR COPYRIGHT HOLDERS |
| * 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 "svga_cmd.h" |
| #include "svga_debug.h" |
| |
| #include "pipe/p_defines.h" |
| #include "util/u_pack_color.h" |
| |
| #include "svga_context.h" |
| #include "svga_state.h" |
| #include "svga_screen_texture.h" |
| |
| |
| static enum pipe_error |
| try_clear(struct svga_context *svga, |
| unsigned buffers, |
| const float *rgba, |
| double depth, |
| unsigned stencil) |
| { |
| int ret = PIPE_OK; |
| SVGA3dRect rect = { 0, 0, 0, 0 }; |
| boolean restore_viewport = FALSE; |
| SVGA3dClearFlag flags = 0; |
| struct pipe_framebuffer_state *fb = &svga->curr.framebuffer; |
| union util_color uc; |
| |
| ret = svga_update_state(svga, SVGA_STATE_HW_CLEAR); |
| if (ret) |
| return ret; |
| |
| if ((buffers & PIPE_CLEAR_COLOR) && fb->cbufs[0]) { |
| flags |= SVGA3D_CLEAR_COLOR; |
| util_pack_color(rgba, PIPE_FORMAT_A8R8G8B8_UNORM, &uc); |
| |
| rect.w = fb->cbufs[0]->width; |
| rect.h = fb->cbufs[0]->height; |
| } |
| |
| if ((buffers & PIPE_CLEAR_DEPTHSTENCIL) && fb->zsbuf) { |
| flags |= SVGA3D_CLEAR_DEPTH; |
| |
| if (svga->curr.framebuffer.zsbuf->format == PIPE_FORMAT_Z24S8_UNORM) |
| flags |= SVGA3D_CLEAR_STENCIL; |
| |
| rect.w = MAX2(rect.w, fb->zsbuf->width); |
| rect.h = MAX2(rect.h, fb->zsbuf->height); |
| } |
| |
| if (memcmp(&rect, &svga->state.hw_clear.viewport, sizeof(rect)) != 0) { |
| restore_viewport = TRUE; |
| ret = SVGA3D_SetViewport(svga->swc, &rect); |
| if (ret) |
| return ret; |
| } |
| |
| ret = SVGA3D_ClearRect(svga->swc, flags, uc.ui, depth, stencil, |
| rect.x, rect.y, rect.w, rect.h); |
| if (ret != PIPE_OK) |
| return ret; |
| |
| if (restore_viewport) { |
| memcpy(&rect, &svga->state.hw_clear.viewport, sizeof rect); |
| ret = SVGA3D_SetViewport(svga->swc, &rect); |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * Clear the given surface to the specified value. |
| * No masking, no scissor (clear entire buffer). |
| */ |
| void |
| svga_clear(struct pipe_context *pipe, unsigned buffers, const float *rgba, |
| double depth, unsigned stencil) |
| { |
| struct svga_context *svga = svga_context( pipe ); |
| int ret; |
| |
| if (buffers & PIPE_CLEAR_COLOR) |
| SVGA_DBG(DEBUG_DMA, "clear sid %p\n", |
| svga_surface(svga->curr.framebuffer.cbufs[0])->handle); |
| |
| ret = try_clear( svga, buffers, rgba, depth, stencil ); |
| |
| if (ret == PIPE_ERROR_OUT_OF_MEMORY) { |
| /* Flush command buffer and retry: |
| */ |
| svga_context_flush( svga, NULL ); |
| |
| ret = try_clear( svga, buffers, rgba, depth, stencil ); |
| } |
| |
| /* |
| * Mark target surfaces as dirty |
| * TODO Mark only cleared surfaces. |
| */ |
| svga_mark_surfaces_dirty(svga); |
| |
| assert (ret == PIPE_OK); |
| } |