svga_pipe_clear.c revision b34d138d8453d45f29632d4dcbe040be11265d26
1/********************************************************** 2 * Copyright 2008-2009 VMware, Inc. All rights reserved. 3 * 4 * Permission is hereby granted, free of charge, to any person 5 * obtaining a copy of this software and associated documentation 6 * files (the "Software"), to deal in the Software without 7 * restriction, including without limitation the rights to use, copy, 8 * modify, merge, publish, distribute, sublicense, and/or sell copies 9 * of the Software, and to permit persons to whom the Software is 10 * furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be 13 * included in all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 * 24 **********************************************************/ 25 26#include "svga_cmd.h" 27#include "svga_debug.h" 28 29#include "pipe/p_defines.h" 30#include "util/u_pack_color.h" 31 32#include "svga_context.h" 33#include "svga_state.h" 34#include "svga_screen_texture.h" 35 36 37static enum pipe_error 38try_clear(struct svga_context *svga, 39 unsigned buffers, 40 const float *rgba, 41 double depth, 42 unsigned stencil) 43{ 44 int ret = PIPE_OK; 45 SVGA3dRect rect = { 0, 0, 0, 0 }; 46 boolean restore_viewport = FALSE; 47 SVGA3dClearFlag flags = 0; 48 struct pipe_framebuffer_state *fb = &svga->curr.framebuffer; 49 union util_color uc; 50 51 ret = svga_update_state(svga, SVGA_STATE_HW_CLEAR); 52 if (ret) 53 return ret; 54 55 if ((buffers & PIPE_CLEAR_COLOR) && fb->cbufs[0]) { 56 flags |= SVGA3D_CLEAR_COLOR; 57 util_pack_color(rgba, PIPE_FORMAT_B8G8R8A8_UNORM, &uc); 58 59 rect.w = fb->cbufs[0]->width; 60 rect.h = fb->cbufs[0]->height; 61 } 62 63 if ((buffers & PIPE_CLEAR_DEPTHSTENCIL) && fb->zsbuf) { 64 flags |= SVGA3D_CLEAR_DEPTH; 65 66 if (svga->curr.framebuffer.zsbuf->format == PIPE_FORMAT_S8Z24_UNORM) 67 flags |= SVGA3D_CLEAR_STENCIL; 68 69 rect.w = MAX2(rect.w, fb->zsbuf->width); 70 rect.h = MAX2(rect.h, fb->zsbuf->height); 71 } 72 73 if (memcmp(&rect, &svga->state.hw_clear.viewport, sizeof(rect)) != 0) { 74 restore_viewport = TRUE; 75 ret = SVGA3D_SetViewport(svga->swc, &rect); 76 if (ret) 77 return ret; 78 } 79 80 ret = SVGA3D_ClearRect(svga->swc, flags, uc.ui, depth, stencil, 81 rect.x, rect.y, rect.w, rect.h); 82 if (ret != PIPE_OK) 83 return ret; 84 85 if (restore_viewport) { 86 memcpy(&rect, &svga->state.hw_clear.viewport, sizeof rect); 87 ret = SVGA3D_SetViewport(svga->swc, &rect); 88 } 89 90 return ret; 91} 92 93/** 94 * Clear the given surface to the specified value. 95 * No masking, no scissor (clear entire buffer). 96 */ 97void 98svga_clear(struct pipe_context *pipe, unsigned buffers, const float *rgba, 99 double depth, unsigned stencil) 100{ 101 struct svga_context *svga = svga_context( pipe ); 102 int ret; 103 104 if (buffers & PIPE_CLEAR_COLOR) 105 SVGA_DBG(DEBUG_DMA, "clear sid %p\n", 106 svga_surface(svga->curr.framebuffer.cbufs[0])->handle); 107 108 ret = try_clear( svga, buffers, rgba, depth, stencil ); 109 110 if (ret == PIPE_ERROR_OUT_OF_MEMORY) { 111 /* Flush command buffer and retry: 112 */ 113 svga_context_flush( svga, NULL ); 114 115 ret = try_clear( svga, buffers, rgba, depth, stencil ); 116 } 117 118 /* 119 * Mark target surfaces as dirty 120 * TODO Mark only cleared surfaces. 121 */ 122 svga_mark_surfaces_dirty(svga); 123 124 assert (ret == PIPE_OK); 125} 126