1 /*
2 * Copyright © 2015 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24 /**
25 * \name mesa_formats.cpp
26 *
27 * Verify that all mesa formats are handled in certain functions and that
28 * the format info table is sane.
29 *
30 */
31
32 #include <gtest/gtest.h>
33
34 #include "main/formats.h"
35 #include "main/glformats.h"
36 #include "main/format_unpack.h"
37 #include "main/format_pack.h"
38
39 // Test fixture for Format tests.
40 class MesaFormatsTest : public ::testing::Test {
41 };
42
43 /**
44 * Debug/test: check that all uncompressed formats are handled in the
45 * _mesa_uncompressed_format_to_type_and_comps() function. When new pixel
46 * formats are added to Mesa, that function needs to be updated.
47 */
TEST_F(MesaFormatsTest,FormatTypeAndComps)48 TEST_F(MesaFormatsTest, FormatTypeAndComps)
49 {
50 for (int fi = MESA_FORMAT_NONE + 1; fi < MESA_FORMAT_COUNT; ++fi) {
51 mesa_format f = (mesa_format) fi;
52 SCOPED_TRACE(_mesa_get_format_name(f));
53
54 if (!_mesa_get_format_name(f))
55 continue;
56
57 /* This function will emit a problem/warning if the format is
58 * not handled.
59 */
60 if (!_mesa_is_format_compressed(f)) {
61 GLenum datatype = 0;
62 GLuint comps = 0;
63
64 /* If the datatype is zero, the format was not handled */
65 _mesa_uncompressed_format_to_type_and_comps(f, &datatype, &comps);
66 EXPECT_NE(datatype, (GLenum)0);
67 }
68
69 }
70 }
71
72 /**
73 * Do sanity checking of the format info table.
74 */
TEST_F(MesaFormatsTest,FormatSanity)75 TEST_F(MesaFormatsTest, FormatSanity)
76 {
77 for (int fi = 0; fi < MESA_FORMAT_COUNT; ++fi) {
78 mesa_format f = (mesa_format) fi;
79 SCOPED_TRACE(_mesa_get_format_name(f));
80 if (!_mesa_get_format_name(f))
81 continue;
82
83 GLenum datatype = _mesa_get_format_datatype(f);
84 GLint r = _mesa_get_format_bits(f, GL_RED_BITS);
85 GLint g = _mesa_get_format_bits(f, GL_GREEN_BITS);
86 GLint b = _mesa_get_format_bits(f, GL_BLUE_BITS);
87 GLint a = _mesa_get_format_bits(f, GL_ALPHA_BITS);
88 GLint l = _mesa_get_format_bits(f, GL_TEXTURE_LUMINANCE_SIZE);
89 GLint i = _mesa_get_format_bits(f, GL_TEXTURE_INTENSITY_SIZE);
90
91 /* Note: Z32_FLOAT_X24S8 has datatype of GL_NONE */
92 EXPECT_TRUE(datatype == GL_NONE ||
93 datatype == GL_UNSIGNED_NORMALIZED ||
94 datatype == GL_SIGNED_NORMALIZED ||
95 datatype == GL_UNSIGNED_INT ||
96 datatype == GL_INT ||
97 datatype == GL_FLOAT);
98
99 if (r > 0 && !_mesa_is_format_compressed(f)) {
100 GLint bytes = _mesa_get_format_bytes(f);
101 EXPECT_LE((r+g+b+a) / 8, bytes);
102 }
103
104 /* Determines if the base format has a channel [rgba] or property [li].
105 * > indicates existance
106 * == indicates non-existance
107 */
108 #define HAS_PROP(rop,gop,bop,aop,lop,iop) \
109 do { \
110 EXPECT_TRUE(r rop 0); \
111 EXPECT_TRUE(g gop 0); \
112 EXPECT_TRUE(b bop 0); \
113 EXPECT_TRUE(a aop 0); \
114 EXPECT_TRUE(l lop 0); \
115 EXPECT_TRUE(i iop 0); \
116 } while(0)
117
118 switch (_mesa_get_format_base_format(f)) {
119 case GL_RGBA:
120 HAS_PROP(>,>,>,>,==,==);
121 break;
122 case GL_RGB:
123 HAS_PROP(>,>,>,==,==,==);
124 break;
125 case GL_RG:
126 HAS_PROP(>,>,==,==,==,==);
127 break;
128 case GL_RED:
129 HAS_PROP(>,==,==,==,==,==);
130 break;
131 case GL_LUMINANCE:
132 HAS_PROP(==,==,==,==,>,==);
133 break;
134 case GL_INTENSITY:
135 HAS_PROP(==,==,==,==,==,>);
136 break;
137 default:
138 break;
139 }
140
141 #undef HAS_PROP
142
143 }
144 }
145
TEST_F(MesaFormatsTest,IntensityToRed)146 TEST_F(MesaFormatsTest, IntensityToRed)
147 {
148 EXPECT_EQ(_mesa_get_intensity_format_red(MESA_FORMAT_I_UNORM8),
149 MESA_FORMAT_R_UNORM8);
150 EXPECT_EQ(_mesa_get_intensity_format_red(MESA_FORMAT_I_SINT32),
151 MESA_FORMAT_R_SINT32);
152 EXPECT_EQ(_mesa_get_intensity_format_red(MESA_FORMAT_R8G8B8A8_UNORM),
153 MESA_FORMAT_R8G8B8A8_UNORM);
154 }
155
fffat_wrap(GLenum format,GLenum type)156 static mesa_format fffat_wrap(GLenum format, GLenum type)
157 {
158 uint32_t f = _mesa_format_from_format_and_type(format, type);
159 if (_mesa_format_is_mesa_array_format(f))
160 f = _mesa_format_from_array_format((mesa_array_format)f);
161 return (mesa_format)f;
162 }
163
TEST_F(MesaFormatsTest,FormatFromFormatAndType)164 TEST_F(MesaFormatsTest, FormatFromFormatAndType)
165 {
166 EXPECT_EQ(fffat_wrap(GL_RGBA, GL_SHORT),
167 MESA_FORMAT_RGBA_SNORM16);
168 EXPECT_EQ(fffat_wrap(GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT),
169 MESA_FORMAT_Z_UNORM16);
170 EXPECT_EQ(fffat_wrap(GL_STENCIL_INDEX, GL_UNSIGNED_BYTE),
171 MESA_FORMAT_S_UINT8);
172
173 /* Should return an array format, but not a proper MESA_FORMAT. */
174 EXPECT_TRUE(_mesa_format_is_mesa_array_format(_mesa_format_from_format_and_type(GL_DEPTH_COMPONENT,
175 GL_BYTE)));
176 }
177
TEST_F(MesaFormatsTest,FormatMatchesFormatAndType)178 TEST_F(MesaFormatsTest, FormatMatchesFormatAndType)
179 {
180 EXPECT_TRUE(_mesa_format_matches_format_and_type(MESA_FORMAT_RGBA_UNORM16,
181 GL_RGBA,
182 GL_UNSIGNED_SHORT, false,
183 NULL));
184 EXPECT_TRUE(_mesa_format_matches_format_and_type(MESA_FORMAT_S_UINT8,
185 GL_STENCIL_INDEX,
186 GL_UNSIGNED_BYTE, false,
187 NULL));
188 EXPECT_TRUE(_mesa_format_matches_format_and_type(MESA_FORMAT_Z_UNORM16,
189 GL_DEPTH_COMPONENT,
190 GL_UNSIGNED_SHORT, false,
191 NULL));
192 }
193
194 static uint32_t
test_unpack_r8i(int8_t val)195 test_unpack_r8i(int8_t val)
196 {
197 uint32_t result[4];
198 _mesa_unpack_uint_rgba_row(MESA_FORMAT_R_SINT8, 1, &val, &result);
199 return result[0];
200 }
201
202 static uint32_t
test_unpack_r32ui(uint32_t val)203 test_unpack_r32ui(uint32_t val)
204 {
205 uint32_t result[4];
206 _mesa_unpack_uint_rgba_row(MESA_FORMAT_R_UINT32, 1, &val, &result);
207 return result[0];
208 }
209
TEST_F(MesaFormatsTest,UnpackRGBAUintRow)210 TEST_F(MesaFormatsTest, UnpackRGBAUintRow)
211 {
212 EXPECT_EQ(test_unpack_r8i(0), 0);
213 EXPECT_EQ(test_unpack_r8i(1), 1);
214 EXPECT_EQ(test_unpack_r8i(0xff), 0xffffffff);
215 EXPECT_EQ(test_unpack_r32ui(0), 0);
216 EXPECT_EQ(test_unpack_r32ui(0xffffffff), 0xffffffff);
217 }
218
TEST_F(MesaFormatsTest,UnpackRGBAUbyteRowRGBA32F)219 TEST_F(MesaFormatsTest, UnpackRGBAUbyteRowRGBA32F)
220 {
221 float val[4] = {0, 0.5, -1, 2};
222 uint8_t result[4];
223 _mesa_unpack_ubyte_rgba_row(MESA_FORMAT_RGBA_FLOAT32, 1, &val, &result);
224 EXPECT_EQ(result[0], 0);
225 EXPECT_EQ(result[1], 0x80);
226 EXPECT_EQ(result[2], 0);
227 EXPECT_EQ(result[3], 0xff);
228 }
229
TEST_F(MesaFormatsTest,UnpackRGBAUbyteRowRGBA4)230 TEST_F(MesaFormatsTest, UnpackRGBAUbyteRowRGBA4)
231 {
232 uint16_t val = (1 << 0) | (0x3f << 5) | (0x10 << 11);
233 uint8_t result[4];
234 _mesa_unpack_ubyte_rgba_row(MESA_FORMAT_R5G6B5_UNORM, 1, &val, &result);
235 EXPECT_EQ(result[0], 0x08);
236 EXPECT_EQ(result[1], 0xff);
237 EXPECT_EQ(result[2], 0x84);
238 EXPECT_EQ(result[3], 0xff);
239 }
240
241 static float
test_unpack_floatz_z32f(float val)242 test_unpack_floatz_z32f(float val)
243 {
244 float result;
245 _mesa_unpack_float_z_row(MESA_FORMAT_Z_FLOAT32, 1, &val, &result);
246 return result;
247 }
248
TEST_F(MesaFormatsTest,UnpackFloatZRow)249 TEST_F(MesaFormatsTest, UnpackFloatZRow)
250 {
251 EXPECT_EQ(test_unpack_floatz_z32f(0.5), 0.5);
252 EXPECT_EQ(test_unpack_floatz_z32f(-1.0), -1.0);
253 EXPECT_EQ(test_unpack_floatz_z32f(2.0), 2.0);
254 }
255
256 static uint32_t
test_unpack_uintz_z32f(float val)257 test_unpack_uintz_z32f(float val)
258 {
259 uint32_t result;
260 _mesa_unpack_uint_z_row(MESA_FORMAT_Z_FLOAT32, 1, &val, &result);
261 return result;
262 }
263
TEST_F(MesaFormatsTest,UnpackUintZRow)264 TEST_F(MesaFormatsTest, UnpackUintZRow)
265 {
266 EXPECT_EQ(test_unpack_uintz_z32f(0.5), 0x7fffffff);
267 EXPECT_EQ(test_unpack_uintz_z32f(-1.0), 0);
268 EXPECT_EQ(test_unpack_uintz_z32f(2.0), 0xffffffff);
269 }
270
271 /* It's easy to have precision issues packing 32-bit floats to unorm. */
TEST_F(MesaFormatsTest,PackFloatZ)272 TEST_F(MesaFormatsTest, PackFloatZ)
273 {
274 float val = 0.571428597f;
275 uint32_t result;
276 _mesa_pack_float_z_row(MESA_FORMAT_Z_UNORM32, 1, &val, &result);
277 EXPECT_EQ(result, 0x924924ff);
278 }
279
TEST_F(MesaFormatsTest,PackUbyteRGBARounding)280 TEST_F(MesaFormatsTest, PackUbyteRGBARounding)
281 {
282 for (int i = 0; i <= 255; i++) {
283 uint8_t val[4] = {(uint8_t)i, 0, 0, 0};
284 uint16_t result;
285 _mesa_pack_ubyte_rgba_row(MESA_FORMAT_R5G6B5_UNORM, 1, val, &result);
286 EXPECT_EQ(result, (i * 31 + 127) / 255);
287 }
288 }
289