1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
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:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
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
24 **********************************************************/
27 #include "svga_debug.h"
29 #include "pipe/p_defines.h"
30 #include "util/u_pack_color.h"
32 #include "svga_context.h"
33 #include "svga_state.h"
34 #include "svga_surface.h"
37 static enum pipe_error
38 try_clear(struct svga_context *svga,
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;
51 ret = svga_update_state(svga, SVGA_STATE_HW_CLEAR);
55 if ((buffers & PIPE_CLEAR_COLOR) && fb->cbufs[0]) {
56 flags |= SVGA3D_CLEAR_COLOR;
57 util_pack_color(rgba, PIPE_FORMAT_B8G8R8A8_UNORM, &uc);
59 rect.w = fb->cbufs[0]->width;
60 rect.h = fb->cbufs[0]->height;
63 if ((buffers & PIPE_CLEAR_DEPTHSTENCIL) && fb->zsbuf) {
64 flags |= SVGA3D_CLEAR_DEPTH;
66 if (svga->curr.framebuffer.zsbuf->format == PIPE_FORMAT_S8_USCALED_Z24_UNORM)
67 flags |= SVGA3D_CLEAR_STENCIL;
69 rect.w = MAX2(rect.w, fb->zsbuf->width);
70 rect.h = MAX2(rect.h, fb->zsbuf->height);
73 if (memcmp(&rect, &svga->state.hw_clear.viewport, sizeof(rect)) != 0) {
74 restore_viewport = TRUE;
75 ret = SVGA3D_SetViewport(svga->swc, &rect);
80 ret = SVGA3D_ClearRect(svga->swc, flags, uc.ui, depth, stencil,
81 rect.x, rect.y, rect.w, rect.h);
85 if (restore_viewport) {
86 memcpy(&rect, &svga->state.hw_clear.viewport, sizeof rect);
87 ret = SVGA3D_SetViewport(svga->swc, &rect);
94 * Clear the given surface to the specified value.
95 * No masking, no scissor (clear entire buffer).
98 svga_clear(struct pipe_context *pipe, unsigned buffers, const float *rgba,
99 double depth, unsigned stencil)
101 struct svga_context *svga = svga_context( pipe );
104 if (buffers & PIPE_CLEAR_COLOR)
105 SVGA_DBG(DEBUG_DMA, "clear sid %p\n",
106 svga_surface(svga->curr.framebuffer.cbufs[0])->handle);
108 ret = try_clear( svga, buffers, rgba, depth, stencil );
110 if (ret == PIPE_ERROR_OUT_OF_MEMORY) {
111 /* Flush command buffer and retry:
113 svga_context_flush( svga, NULL );
115 ret = try_clear( svga, buffers, rgba, depth, stencil );
119 * Mark target surfaces as dirty
120 * TODO Mark only cleared surfaces.
122 svga_mark_surfaces_dirty(svga);
124 assert (ret == PIPE_OK);