1 /**************************************************************************
3 * Copyright 2007 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 **************************************************************************/
33 #include "util/u_clear.h"
34 #include "util/u_format.h"
35 #include "util/u_pack_color.h"
36 #include "i915_context.h"
37 #include "i915_screen.h"
39 #include "i915_batch.h"
40 #include "i915_resource.h"
41 #include "i915_state.h"
44 i915_clear_emit(struct pipe_context
*pipe
, unsigned buffers
,
45 const union pipe_color_union
*color
,
46 double depth
, unsigned stencil
,
47 unsigned destx
, unsigned desty
, unsigned width
, unsigned height
)
49 struct i915_context
*i915
= i915_context(pipe
);
50 uint32_t clear_params
, clear_color
, clear_depth
, clear_stencil
,
51 clear_color8888
, packed_z_stencil
;
52 union util_color u_color
;
53 float f_depth
= depth
;
54 struct i915_texture
*cbuf_tex
, *depth_tex
;
56 cbuf_tex
= depth_tex
= NULL
;
59 if (buffers
& PIPE_CLEAR_COLOR
) {
60 struct pipe_surface
*cbuf
= i915
->framebuffer
.cbufs
[0];
62 clear_params
|= CLEARPARAM_WRITE_COLOR
;
63 cbuf_tex
= i915_texture(cbuf
->texture
);
65 util_pack_color(color
->f
, cbuf
->format
, &u_color
);
66 if (util_format_get_blocksize(cbuf_tex
->b
.b
.format
) == 4)
67 clear_color
= u_color
.ui
;
69 clear_color
= (u_color
.ui
& 0xffff) | (u_color
.ui
<< 16);
71 /* correctly swizzle clear value */
72 if (i915
->current
.need_target_fixup
)
73 util_pack_color(color
->f
, cbuf
->format
, &u_color
);
75 util_pack_color(color
->f
, PIPE_FORMAT_B8G8R8A8_UNORM
, &u_color
);
76 clear_color8888
= u_color
.ui
;
78 clear_color
= clear_color8888
= 0;
80 clear_depth
= clear_stencil
= 0;
81 if (buffers
& PIPE_CLEAR_DEPTH
) {
82 struct pipe_surface
*zbuf
= i915
->framebuffer
.zsbuf
;
84 clear_params
|= CLEARPARAM_WRITE_DEPTH
;
85 depth_tex
= i915_texture(zbuf
->texture
);
86 packed_z_stencil
= util_pack_z_stencil(depth_tex
->b
.b
.format
, depth
, stencil
);
88 if (util_format_get_blocksize(depth_tex
->b
.b
.format
) == 4) {
89 /* Avoid read-modify-write if there's no stencil. */
90 if (buffers
& PIPE_CLEAR_STENCIL
91 || depth_tex
->b
.b
.format
!= PIPE_FORMAT_Z24_UNORM_S8_USCALED
) {
92 clear_params
|= CLEARPARAM_WRITE_STENCIL
;
93 clear_stencil
= packed_z_stencil
& 0xff;
94 clear_depth
= packed_z_stencil
;
96 clear_depth
= packed_z_stencil
& 0xffffff00;
98 clear_depth
= (clear_depth
& 0xffff) | (clear_depth
<< 16);
102 if (i915
->hardware_dirty
)
103 i915_emit_hardware_state(i915
);
105 if (!BEGIN_BATCH(7 + 7)) {
108 i915_emit_hardware_state(i915
);
109 i915
->vbo_flushed
= 1;
111 assert(BEGIN_BATCH(7 + 7));
114 OUT_BATCH(_3DSTATE_CLEAR_PARAMETERS
);
115 OUT_BATCH(clear_params
| CLEARPARAM_CLEAR_RECT
);
116 /* Used for zone init prim */
117 OUT_BATCH(clear_color
);
118 OUT_BATCH(clear_depth
);
119 /* Used for clear rect prim */
120 OUT_BATCH(clear_color8888
);
121 OUT_BATCH_F(f_depth
);
122 OUT_BATCH(clear_stencil
);
124 OUT_BATCH(_3DPRIMITIVE
| PRIM3D_CLEAR_RECT
| 5);
125 OUT_BATCH_F(destx
+ width
);
126 OUT_BATCH_F(desty
+ height
);
128 OUT_BATCH_F(desty
+ height
);
132 /* Flush after clear, its expected to be a costly operation.
133 * This is not required, just a heuristic
137 i915
->last_fired_vertices
= i915
->fired_vertices
;
138 i915
->fired_vertices
= 0;
142 * Clear the given buffers to the specified values.
143 * No masking, no scissor (clear entire buffer).
146 i915_clear_blitter(struct pipe_context
*pipe
, unsigned buffers
,
147 const union pipe_color_union
*color
,
148 double depth
, unsigned stencil
)
150 util_clear(pipe
, &i915_context(pipe
)->framebuffer
, buffers
, color
, depth
,
155 i915_clear_render(struct pipe_context
*pipe
, unsigned buffers
,
156 const union pipe_color_union
*color
,
157 double depth
, unsigned stencil
)
159 struct i915_context
*i915
= i915_context(pipe
);
162 i915_update_derived(i915
);
164 i915_clear_emit(pipe
, buffers
, color
, depth
, stencil
,
165 0, 0, i915
->framebuffer
.width
, i915
->framebuffer
.height
);