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
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
#include "intel_context.h"
#include "intel_tex.h"
#include "main/enums.h"
#include "main/formats.h"
/**
* Choose hardware texture format given the user's glTexImage parameters.
*
* It works out that this function is fine for all the supported
* hardware. However, there is still a need to map the formats onto
* hardware descriptors.
*
* Note that the i915 can actually support many more formats than
* these if we take the step of simply swizzling the colors
* immediately after sampling...
*/
gl_format
intelChooseTextureFormat(GLcontext * ctx, GLint internalFormat,
GLenum format, GLenum type)
{
struct intel_context *intel = intel_context(ctx);
const GLboolean do32bpt = (intel->ctx.Visual.rgbBits >= 24);
#if 0
printf("%s intFmt=0x%x format=0x%x type=0x%x\n",
__FUNCTION__, internalFormat, format, type);
#endif
switch (internalFormat) {
case 4:
case GL_RGBA:
case GL_COMPRESSED_RGBA:
if (format == GL_BGRA) {
if (type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_8_8_8_8_REV) {
return MESA_FORMAT_ARGB8888;
}
else if (type == GL_UNSIGNED_SHORT_4_4_4_4_REV) {
return MESA_FORMAT_ARGB4444;
}
else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
return MESA_FORMAT_ARGB1555;
}
}
return do32bpt ? MESA_FORMAT_ARGB8888 : MESA_FORMAT_ARGB4444;
case 3:
case GL_RGB:
case GL_COMPRESSED_RGB:
if (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) {
return MESA_FORMAT_RGB565;
}
if (do32bpt) {
if (intel->has_xrgb_textures)
return MESA_FORMAT_XRGB8888;
else
return MESA_FORMAT_ARGB8888;
} else {
return MESA_FORMAT_RGB565;
}
case GL_RGBA8:
case GL_RGB10_A2:
case GL_RGBA12:
case GL_RGBA16:
return do32bpt ? MESA_FORMAT_ARGB8888 : MESA_FORMAT_ARGB4444;
case GL_RGBA4:
case GL_RGBA2:
return MESA_FORMAT_ARGB4444;
case GL_RGB5_A1:
return MESA_FORMAT_ARGB1555;
case GL_RGB8:
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
if (intel->has_xrgb_textures)
return MESA_FORMAT_XRGB8888;
else
return MESA_FORMAT_ARGB8888;
case GL_RGB5:
case GL_RGB4:
case GL_R3_G3_B2:
return MESA_FORMAT_RGB565;
case GL_ALPHA:
case GL_ALPHA4:
case GL_ALPHA8:
case GL_ALPHA12:
case GL_ALPHA16:
case GL_COMPRESSED_ALPHA:
return MESA_FORMAT_A8;
case 1:
case GL_LUMINANCE:
case GL_LUMINANCE4:
case GL_LUMINANCE8:
case GL_LUMINANCE12:
case GL_LUMINANCE16:
case GL_COMPRESSED_LUMINANCE:
return MESA_FORMAT_L8;
case GL_LUMINANCE12_ALPHA4:
case GL_LUMINANCE12_ALPHA12:
case GL_LUMINANCE16_ALPHA16:
#ifndef I915
return MESA_FORMAT_AL1616;
#else
/* FALLTHROUGH */
#endif
case 2:
case GL_LUMINANCE_ALPHA:
case GL_LUMINANCE4_ALPHA4:
case GL_LUMINANCE6_ALPHA2:
case GL_LUMINANCE8_ALPHA8:
case GL_COMPRESSED_LUMINANCE_ALPHA:
return MESA_FORMAT_AL88;
case GL_INTENSITY:
case GL_INTENSITY4:
case GL_INTENSITY8:
case GL_INTENSITY12:
case GL_INTENSITY16:
case GL_COMPRESSED_INTENSITY:
return MESA_FORMAT_I8;
case GL_YCBCR_MESA:
if (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE)
return MESA_FORMAT_YCBCR;
else
return MESA_FORMAT_YCBCR_REV;
case GL_COMPRESSED_RGB_FXT1_3DFX:
return MESA_FORMAT_RGB_FXT1;
case GL_COMPRESSED_RGBA_FXT1_3DFX:
return MESA_FORMAT_RGBA_FXT1;
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
return MESA_FORMAT_RGB_DXT1;
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
return MESA_FORMAT_RGBA_DXT1;
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
return MESA_FORMAT_RGBA_DXT3;
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
return MESA_FORMAT_RGBA_DXT5;
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT16:
case GL_DEPTH_COMPONENT24:
case GL_DEPTH_COMPONENT32:
#if 0
return MESA_FORMAT_Z16;
#else
/* fall-through.
* 16bpp depth texture can't be paired with a stencil buffer so
* always used combined depth/stencil format.
*/
#endif
case GL_DEPTH_STENCIL_EXT:
case GL_DEPTH24_STENCIL8_EXT:
return MESA_FORMAT_S8_Z24;
#ifndef I915
case GL_SRGB_EXT:
case GL_SRGB8_EXT:
case GL_SRGB_ALPHA_EXT:
case GL_SRGB8_ALPHA8_EXT:
case GL_COMPRESSED_SRGB_EXT:
case GL_COMPRESSED_SRGB_ALPHA_EXT:
case GL_COMPRESSED_SLUMINANCE_EXT:
case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
return MESA_FORMAT_SARGB8;
case GL_SLUMINANCE_EXT:
case GL_SLUMINANCE8_EXT:
if (intel->has_luminance_srgb)
return MESA_FORMAT_SL8;
else
return MESA_FORMAT_SARGB8;
case GL_SLUMINANCE_ALPHA_EXT:
case GL_SLUMINANCE8_ALPHA8_EXT:
if (intel->has_luminance_srgb)
return MESA_FORMAT_SLA8;
else
return MESA_FORMAT_SARGB8;
case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
return MESA_FORMAT_SRGB_DXT1;
/* i915 could also do this */
case GL_DUDV_ATI:
case GL_DU8DV8_ATI:
return MESA_FORMAT_DUDV8;
case GL_RGBA_SNORM:
case GL_RGBA8_SNORM:
return MESA_FORMAT_SIGNED_RGBA8888_REV;
#endif
default:
fprintf(stderr, "unexpected texture format %s in %s\n",
_mesa_lookup_enum_by_nr(internalFormat), __FUNCTION__);
return MESA_FORMAT_NONE;
}
return MESA_FORMAT_NONE; /* never get here */
}
int intel_compressed_num_bytes(GLuint mesaFormat)
{
GLuint bw, bh;
GLuint block_size;
block_size = _mesa_get_format_bytes(mesaFormat);
_mesa_get_format_block_size(mesaFormat, &bw, &bh);
return block_size / bw;
}
|
