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 /* If the datatype is zero, the format was not handled */
62 GLenum datatype = _mesa_uncompressed_format_to_type(f);
63 EXPECT_NE(datatype, (GLenum)0);
64 }
65
66 }
67 }
68
69 /**
70 * Do sanity checking of the format info table.
71 */
TEST_F(MesaFormatsTest,FormatSanity)72 TEST_F(MesaFormatsTest, FormatSanity)
73 {
74 for (int fi = 0; fi < MESA_FORMAT_COUNT; ++fi) {
75 mesa_format f = (mesa_format) fi;
76 SCOPED_TRACE(_mesa_get_format_name(f));
77 if (!_mesa_get_format_name(f))
78 continue;
79
80 GLenum datatype = _mesa_get_format_datatype(f);
81 GLint r = _mesa_get_format_bits(f, GL_RED_BITS);
82 GLint g = _mesa_get_format_bits(f, GL_GREEN_BITS);
83 GLint b = _mesa_get_format_bits(f, GL_BLUE_BITS);
84 GLint a = _mesa_get_format_bits(f, GL_ALPHA_BITS);
85 GLint l = _mesa_get_format_bits(f, GL_TEXTURE_LUMINANCE_SIZE);
86 GLint i = _mesa_get_format_bits(f, GL_TEXTURE_INTENSITY_SIZE);
87
88 /* Note: Z32_FLOAT_X24S8 has datatype of GL_NONE */
89 EXPECT_TRUE(datatype == GL_NONE ||
90 datatype == GL_UNSIGNED_NORMALIZED ||
91 datatype == GL_SIGNED_NORMALIZED ||
92 datatype == GL_UNSIGNED_INT ||
93 datatype == GL_INT ||
94 datatype == GL_FLOAT);
95
96 if (r > 0 && !_mesa_is_format_compressed(f)) {
97 GLint bytes = _mesa_get_format_bytes(f);
98 EXPECT_LE((r+g+b+a) / 8, bytes);
99 }
100
101 /* Determines if the base format has a channel [rgba] or property [li].
102 * > indicates existance
103 * == indicates non-existance
104 */
105 #define HAS_PROP(rop,gop,bop,aop,lop,iop) \
106 do { \
107 EXPECT_TRUE(r rop 0); \
108 EXPECT_TRUE(g gop 0); \
109 EXPECT_TRUE(b bop 0); \
110 EXPECT_TRUE(a aop 0); \
111 EXPECT_TRUE(l lop 0); \
112 EXPECT_TRUE(i iop 0); \
113 } while(0)
114
115 switch (_mesa_get_format_base_format(f)) {
116 case GL_RGBA:
117 HAS_PROP(>,>,>,>,==,==);
118 break;
119 case GL_RGB:
120 HAS_PROP(>,>,>,==,==,==);
121 break;
122 case GL_RG:
123 HAS_PROP(>,>,==,==,==,==);
124 break;
125 case GL_RED:
126 HAS_PROP(>,==,==,==,==,==);
127 break;
128 case GL_LUMINANCE:
129 HAS_PROP(==,==,==,==,>,==);
130 break;
131 case GL_INTENSITY:
132 HAS_PROP(==,==,==,==,==,>);
133 break;
134 default:
135 break;
136 }
137
138 #undef HAS_PROP
139
140 }
141 }
142
TEST_F(MesaFormatsTest,IntensityToRed)143 TEST_F(MesaFormatsTest, IntensityToRed)
144 {
145 EXPECT_EQ(_mesa_get_intensity_format_red(MESA_FORMAT_I_UNORM8),
146 MESA_FORMAT_R_UNORM8);
147 EXPECT_EQ(_mesa_get_intensity_format_red(MESA_FORMAT_I_SINT32),
148 MESA_FORMAT_R_SINT32);
149 EXPECT_EQ(_mesa_get_intensity_format_red(MESA_FORMAT_R8G8B8A8_UNORM),
150 MESA_FORMAT_R8G8B8A8_UNORM);
151 }
152
fffat_wrap(GLenum format,GLenum type)153 static mesa_format fffat_wrap(GLenum format, GLenum type)
154 {
155 uint32_t f = _mesa_format_from_format_and_type(format, type);
156 if (_mesa_format_is_mesa_array_format(f))
157 f = _mesa_format_from_array_format((mesa_array_format)f);
158 return (mesa_format)f;
159 }
160
TEST_F(MesaFormatsTest,FormatFromFormatAndType)161 TEST_F(MesaFormatsTest, FormatFromFormatAndType)
162 {
163 EXPECT_EQ(fffat_wrap(GL_RGBA, GL_SHORT),
164 MESA_FORMAT_RGBA_SNORM16);
165 EXPECT_EQ(fffat_wrap(GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT),
166 MESA_FORMAT_Z_UNORM16);
167 EXPECT_EQ(fffat_wrap(GL_STENCIL_INDEX, GL_UNSIGNED_BYTE),
168 MESA_FORMAT_S_UINT8);
169
170 /* Should return an array format, but not a proper MESA_FORMAT. */
171 EXPECT_TRUE(_mesa_format_is_mesa_array_format(_mesa_format_from_format_and_type(GL_DEPTH_COMPONENT,
172 GL_BYTE)));
173 }
174
TEST_F(MesaFormatsTest,FormatMatchesFormatAndType)175 TEST_F(MesaFormatsTest, FormatMatchesFormatAndType)
176 {
177 EXPECT_TRUE(_mesa_format_matches_format_and_type(MESA_FORMAT_RGBA_UNORM16,
178 GL_RGBA,
179 GL_UNSIGNED_SHORT, false,
180 NULL));
181 EXPECT_TRUE(_mesa_format_matches_format_and_type(MESA_FORMAT_S_UINT8,
182 GL_STENCIL_INDEX,
183 GL_UNSIGNED_BYTE, false,
184 NULL));
185 EXPECT_TRUE(_mesa_format_matches_format_and_type(MESA_FORMAT_Z_UNORM16,
186 GL_DEPTH_COMPONENT,
187 GL_UNSIGNED_SHORT, false,
188 NULL));
189 }
190
191 static uint32_t
test_unpack_r8i(int8_t val)192 test_unpack_r8i(int8_t val)
193 {
194 uint32_t result[4];
195 _mesa_unpack_uint_rgba_row(MESA_FORMAT_R_SINT8, 1, &val, &result);
196 return result[0];
197 }
198
199 static uint32_t
test_unpack_r32ui(uint32_t val)200 test_unpack_r32ui(uint32_t val)
201 {
202 uint32_t result[4];
203 _mesa_unpack_uint_rgba_row(MESA_FORMAT_R_UINT32, 1, &val, &result);
204 return result[0];
205 }
206
TEST_F(MesaFormatsTest,UnpackRGBAUintRow)207 TEST_F(MesaFormatsTest, UnpackRGBAUintRow)
208 {
209 EXPECT_EQ(test_unpack_r8i(0), 0);
210 EXPECT_EQ(test_unpack_r8i(1), 1);
211 EXPECT_EQ(test_unpack_r8i(0xff), 0xffffffff);
212 EXPECT_EQ(test_unpack_r32ui(0), 0);
213 EXPECT_EQ(test_unpack_r32ui(0xffffffff), 0xffffffff);
214 }
215
TEST_F(MesaFormatsTest,UnpackRGBAUbyteRowRGBA32F)216 TEST_F(MesaFormatsTest, UnpackRGBAUbyteRowRGBA32F)
217 {
218 float val[4] = {0, 0.5, -1, 2};
219 uint8_t result[4];
220 _mesa_unpack_ubyte_rgba_row(MESA_FORMAT_RGBA_FLOAT32, 1, &val, &result);
221 EXPECT_EQ(result[0], 0);
222 EXPECT_EQ(result[1], 0x80);
223 EXPECT_EQ(result[2], 0);
224 EXPECT_EQ(result[3], 0xff);
225 }
226
TEST_F(MesaFormatsTest,UnpackRGBAUbyteRowRGBA4)227 TEST_F(MesaFormatsTest, UnpackRGBAUbyteRowRGBA4)
228 {
229 uint16_t val = (1 << 0) | (0x3f << 5) | (0x10 << 11);
230 uint8_t result[4];
231 _mesa_unpack_ubyte_rgba_row(MESA_FORMAT_R5G6B5_UNORM, 1, &val, &result);
232 EXPECT_EQ(result[0], 0x08);
233 EXPECT_EQ(result[1], 0xff);
234 EXPECT_EQ(result[2], 0x84);
235 EXPECT_EQ(result[3], 0xff);
236 }
237
238 static float
test_unpack_floatz_z32f(float val)239 test_unpack_floatz_z32f(float val)
240 {
241 float result;
242 _mesa_unpack_float_z_row(MESA_FORMAT_Z_FLOAT32, 1, &val, &result);
243 return result;
244 }
245
TEST_F(MesaFormatsTest,UnpackFloatZRow)246 TEST_F(MesaFormatsTest, UnpackFloatZRow)
247 {
248 EXPECT_EQ(test_unpack_floatz_z32f(0.5), 0.5);
249 EXPECT_EQ(test_unpack_floatz_z32f(-1.0), -1.0);
250 EXPECT_EQ(test_unpack_floatz_z32f(2.0), 2.0);
251 }
252
253 static uint32_t
test_unpack_uintz_z32f(float val)254 test_unpack_uintz_z32f(float val)
255 {
256 uint32_t result;
257 _mesa_unpack_uint_z_row(MESA_FORMAT_Z_FLOAT32, 1, &val, &result);
258 return result;
259 }
260
TEST_F(MesaFormatsTest,UnpackUintZRow)261 TEST_F(MesaFormatsTest, UnpackUintZRow)
262 {
263 EXPECT_EQ(test_unpack_uintz_z32f(0.5), 0x7fffffff);
264 EXPECT_EQ(test_unpack_uintz_z32f(-1.0), 0);
265 EXPECT_EQ(test_unpack_uintz_z32f(2.0), 0xffffffff);
266 }
267
268 /* It's easy to have precision issues packing 32-bit floats to unorm. */
TEST_F(MesaFormatsTest,PackFloatZ)269 TEST_F(MesaFormatsTest, PackFloatZ)
270 {
271 float val = 0.571428597f;
272 uint32_t result;
273 _mesa_pack_float_z_row(MESA_FORMAT_Z_UNORM32, 1, &val, &result);
274 EXPECT_EQ(result, 0x924924ff);
275 }
276
TEST_F(MesaFormatsTest,PackUbyteRGBARounding)277 TEST_F(MesaFormatsTest, PackUbyteRGBARounding)
278 {
279 for (int i = 0; i <= 255; i++) {
280 uint8_t val[4] = {(uint8_t)i, 0, 0, 0};
281 uint16_t result;
282 _mesa_pack_ubyte_rgba_row(MESA_FORMAT_R5G6B5_UNORM, 1, val, &result);
283 EXPECT_EQ(result, (i * 31 + 127) / 255);
284 }
285 }
286