1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* Copyright 2009 Intel Corporation.
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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 "main/glheader.h"
#include "main/mtypes.h"
#include "swrast/swrast.h"
#include "drivers/common/meta.h"
#include "intel_context.h"
#include "intel_blit.h"
#include "intel_clear.h"
#include "intel_fbo.h"
#include "intel_regions.h"
#define FILE_DEBUG_FLAG DEBUG_BLIT
static const char *buffer_names[] = {
[BUFFER_FRONT_LEFT] = "front",
[BUFFER_BACK_LEFT] = "back",
[BUFFER_FRONT_RIGHT] = "front right",
[BUFFER_BACK_RIGHT] = "back right",
[BUFFER_DEPTH] = "depth",
[BUFFER_STENCIL] = "stencil",
[BUFFER_ACCUM] = "accum",
[BUFFER_AUX0] = "aux0",
[BUFFER_COLOR0] = "color0",
[BUFFER_COLOR1] = "color1",
[BUFFER_COLOR2] = "color2",
[BUFFER_COLOR3] = "color3",
[BUFFER_COLOR4] = "color4",
[BUFFER_COLOR5] = "color5",
[BUFFER_COLOR6] = "color6",
[BUFFER_COLOR7] = "color7",
};
/**
* Called by ctx->Driver.Clear.
*/
static void
intelClear(GLcontext *ctx, GLbitfield mask)
{
struct intel_context *intel = intel_context(ctx);
const GLuint colorMask = *((GLuint *) & ctx->Color.ColorMask[0]);
GLbitfield tri_mask = 0;
GLbitfield blit_mask = 0;
GLbitfield swrast_mask = 0;
struct gl_framebuffer *fb = ctx->DrawBuffer;
GLuint i;
if (mask & (BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_FRONT_RIGHT)) {
intel->front_buffer_dirty = GL_TRUE;
}
if (0)
fprintf(stderr, "%s\n", __FUNCTION__);
/* HW color buffers (front, back, aux, generic FBO, etc) */
if (colorMask == ~0) {
/* clear all R,G,B,A */
/* XXX FBO: need to check if colorbuffers are software RBOs! */
blit_mask |= (mask & BUFFER_BITS_COLOR);
}
else {
/* glColorMask in effect */
tri_mask |= (mask & (BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT));
}
/* HW stencil */
if (mask & BUFFER_BIT_STENCIL) {
const struct intel_region *stencilRegion
= intel_get_rb_region(fb, BUFFER_STENCIL);
if (stencilRegion) {
/* have hw stencil */
if (stencilRegion->tiling == I915_TILING_Y ||
(ctx->Stencil.WriteMask[0] & 0xff) != 0xff) {
/* We have to use the 3D engine if we're clearing a partial mask
* of the stencil buffer, or if we're on a 965 which has a tiled
* depth/stencil buffer in a layout we can't blit to.
*/
tri_mask |= BUFFER_BIT_STENCIL;
}
else {
/* clearing all stencil bits, use blitting */
blit_mask |= BUFFER_BIT_STENCIL;
}
}
}
/* HW depth */
if (mask & BUFFER_BIT_DEPTH) {
const struct intel_region *irb = intel_get_rb_region(fb, BUFFER_DEPTH);
/* clear depth with whatever method is used for stencil (see above) */
if (irb->tiling == I915_TILING_Y || tri_mask & BUFFER_BIT_STENCIL)
tri_mask |= BUFFER_BIT_DEPTH;
else
blit_mask |= BUFFER_BIT_DEPTH;
}
/* If we're doing a tri pass for depth/stencil, include a likely color
* buffer with it.
*/
if (mask & (BUFFER_BIT_DEPTH | BUFFER_BIT_STENCIL)) {
int color_bit = _mesa_ffs(mask & BUFFER_BITS_COLOR);
if (color_bit != 0) {
tri_mask |= blit_mask & (1 << (color_bit - 1));
blit_mask &= ~(1 << (color_bit - 1));
}
}
if (intel->gen >= 6) {
/* Blits are in a different ringbuffer so we don't use them. */
tri_mask |= blit_mask;
blit_mask = 0;
}
/* SW fallback clearing */
swrast_mask = mask & ~tri_mask & ~blit_mask;
{
/* look for non-Intel renderbuffers (clear them with swrast) */
GLbitfield blit_or_tri = blit_mask | tri_mask;
while (blit_or_tri) {
GLuint i = _mesa_ffs(blit_or_tri) - 1;
GLbitfield bufBit = 1 << i;
if (!fb->Attachment[i].Renderbuffer->ClassID) {
blit_mask &= ~bufBit;
tri_mask &= ~bufBit;
swrast_mask |= bufBit;
}
blit_or_tri ^= bufBit;
}
}
if (blit_mask) {
if (INTEL_DEBUG & DEBUG_BLIT) {
DBG("blit clear:");
for (i = 0; i < BUFFER_COUNT; i++) {
if (blit_mask & (1 << i))
DBG(" %s", buffer_names[i]);
}
DBG("\n");
}
intelClearWithBlit(ctx, blit_mask);
}
if (tri_mask) {
if (INTEL_DEBUG & DEBUG_BLIT) {
DBG("tri clear:");
for (i = 0; i < BUFFER_COUNT; i++) {
if (tri_mask & (1 << i))
DBG(" %s", buffer_names[i]);
}
DBG("\n");
}
_mesa_meta_Clear(&intel->ctx, tri_mask);
}
if (swrast_mask) {
if (INTEL_DEBUG & DEBUG_BLIT) {
DBG("swrast clear:");
for (i = 0; i < BUFFER_COUNT; i++) {
if (swrast_mask & (1 << i))
DBG(" %s", buffer_names[i]);
}
DBG("\n");
}
_swrast_Clear(ctx, swrast_mask);
}
}
void
intelInitClearFuncs(struct dd_function_table *functions)
{
functions->Clear = intelClear;
}
|
