1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #include "util/u_pack_color.h"
29 #include "util/u_math.h"
31 #include "pipe/p_state.h"
33 #include "brw_batchbuffer.h"
34 #include "brw_screen.h"
35 #include "brw_context.h"
38 #define MASK24 0xffffff
42 * Use blitting to clear the renderbuffers named by 'flags'.
43 * Note: we can't use the ctx->DrawBuffer->_ColorDrawBufferIndexes field
44 * since that might include software renderbuffers or renderbuffers
45 * which we're clearing with triangles.
47 static enum pipe_error
48 try_clear( struct brw_context *brw,
49 struct brw_surface *surface,
56 int x2 = surface->base.width;
57 int y2 = surface->base.height;
58 int pitch = surface->pitch;
59 int cpp = surface->cpp;
61 if (x2 == 0 || y2 == 0)
64 debug_printf("%s dst:buf(%p)/%d+%d %d,%d sz:%dx%d\n",
66 (void *)surface->bo, pitch * cpp,
68 x1, y1, x2 - x1, y2 - y1);
71 CMD = XY_COLOR_BLT_CMD | rgba_mask;
73 /* Setup the blit command */
82 /* XXX: nasty hack for clearing depth buffers
84 if (surface->tiling == BRW_TILING_Y) {
88 if (surface->tiling == BRW_TILING_X) {
93 BR13 |= (pitch * cpp);
98 OUT_BATCH((y1 << 16) | x1);
99 OUT_BATCH((y2 << 16) | x2);
100 OUT_RELOC(surface->bo,
112 static void color_clear(struct brw_context *brw,
113 struct brw_surface *bsurface,
117 union util_color value;
119 util_pack_color( rgba, bsurface->base.format, &value );
121 if (bsurface->cpp == 2)
122 value.ui |= value.ui << 16;
124 ret = try_clear( brw, bsurface, value.ui,
125 XY_BLT_WRITE_RGB | XY_BLT_WRITE_ALPHA );
128 brw_context_flush( brw );
129 ret = try_clear( brw, bsurface, value.ui,
130 XY_BLT_WRITE_RGB | XY_BLT_WRITE_ALPHA );
135 static void zstencil_clear(struct brw_context *brw,
136 struct brw_surface *bsurface,
137 unsigned clear_flags,
146 if (clear_flags & PIPE_CLEAR_DEPTH)
147 mask |= XY_BLT_WRITE_RGB;
149 switch (bsurface->base.format) {
150 case PIPE_FORMAT_Z32_FLOAT:
151 tmp.f = (float)depth;
154 case PIPE_FORMAT_Z24X8_UNORM:
155 case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
156 value = ((unsigned)(depth * MASK24) & MASK24);
158 case PIPE_FORMAT_Z16_UNORM:
159 value = ((unsigned)(depth * MASK16) & MASK16);
166 switch (bsurface->base.format) {
167 case PIPE_FORMAT_Z32_FLOAT:
168 mask |= XY_BLT_WRITE_ALPHA;
170 case PIPE_FORMAT_Z24X8_UNORM:
171 value = value | (stencil << 24);
172 mask |= XY_BLT_WRITE_ALPHA;
174 case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
175 value = value | (stencil << 24);
176 if (clear_flags & PIPE_CLEAR_STENCIL)
177 mask |= XY_BLT_WRITE_ALPHA;
179 case PIPE_FORMAT_Z16_UNORM:
180 value = value | (value << 16);
181 mask |= XY_BLT_WRITE_ALPHA;
187 ret = try_clear( brw, bsurface, value, mask );
190 brw_context_flush( brw );
191 ret = try_clear( brw, bsurface, value, mask );
199 * Clear the given surface to the specified value.
200 * No masking, no scissor (clear entire buffer).
202 static void brw_clear(struct pipe_context *pipe,
208 struct brw_context *brw = brw_context( pipe );
211 if (buffers & PIPE_CLEAR_COLOR) {
212 for (i = 0; i < brw->curr.fb.nr_cbufs; i++) {
214 brw_surface(brw->curr.fb.cbufs[i]),
219 if (buffers & PIPE_CLEAR_DEPTHSTENCIL) {
220 if (brw->curr.fb.zsbuf) {
222 brw_surface(brw->curr.fb.zsbuf),
223 buffers & PIPE_CLEAR_DEPTHSTENCIL,
229 /* XXX should respect region */
230 static void brw_clear_render_target(struct pipe_context *pipe,
231 struct pipe_surface *dst,
233 unsigned dstx, unsigned dsty,
234 unsigned width, unsigned height)
236 struct brw_context *brw = brw_context( pipe );
243 /* XXX should respect region */
244 static void brw_clear_depth_stencil(struct pipe_context *pipe,
245 struct pipe_surface *dst,
246 unsigned clear_flags,
249 unsigned dstx, unsigned dsty,
250 unsigned width, unsigned height)
252 struct brw_context *brw = brw_context( pipe );
260 void brw_pipe_clear_init( struct brw_context *brw )
262 brw->base.clear = brw_clear;
263 brw->base.clear_render_target = brw_clear_render_target;
264 brw->base.clear_depth_stencil = brw_clear_depth_stencil;
268 void brw_pipe_clear_cleanup( struct brw_context *brw )