[Piglit] [PATCH] Add a basic teximage color conversion test
Jason Ekstrand
jason at jlekstrand.net
Fri Aug 22 13:02:38 PDT 2014
I've had this one kicking around my personal repo for a while. It's nicer
than the equivalent glean test (but doesn't cover quite as much) and is
also useful for benchmarking texture uploads.
On Fri, Aug 22, 2014 at 1:00 PM, Jason Ekstrand <jason at jlekstrand.net>
wrote:
> ---
> tests/all.py | 29 ++
> tests/texturing/CMakeLists.gl.txt | 1 +
> tests/texturing/teximage-colors.c | 872
> ++++++++++++++++++++++++++++++++++++++
> 3 files changed, 902 insertions(+)
> create mode 100644 tests/texturing/teximage-colors.c
>
> diff --git a/tests/all.py b/tests/all.py
> index 17d5d9b..5670928 100644
> --- a/tests/all.py
> +++ b/tests/all.py
> @@ -797,6 +797,35 @@ add_concurrent_test(gl11,
> 'triangle-guardband-viewport')
> add_concurrent_test(gl11, 'getteximage-targets 1D')
> add_concurrent_test(gl11, 'getteximage-targets 2D')
>
> +color_formats = [
> + 'GL_RED', 'GL_R8', 'GL_R8_SNORM', 'GL_R16', 'GL_R16_SNORM',
> + 'GL_R16F', 'GL_R32F',
> +
> + 'GL_RG', 'GL_RG8', 'GL_RG8_SNORM', 'GL_RG16', 'GL_RG16_SNORM',
> + 'GL_RG16F', 'GL_RG32F',
> +
> + 'GL_RGB', 'GL_R3_G3_B2', 'GL_RGB4', 'GL_RGB5', 'GL_RGB8',
> + 'GL_RGB8_SNORM', 'GL_SRGB8', 'GL_RGB10', 'GL_R11F_G11F_B10F',
> + 'GL_RGB12', 'GL_RGB9_E5', 'GL_RGB16', 'GL_RGB16F',
> + 'GL_RGB16_SNORM', 'GL_RGB32F',
> +
> + 'GL_RGBA', 'GL_RGBA2', 'GL_RGBA4', 'GL_RGB5_A1', 'GL_RGBA8',
> + 'GL_RGB10_A2', 'GL_RGBA8_SNORM', 'GL_SRGB8_ALPHA8', 'GL_RGBA12',
> + 'GL_RGBA16', 'GL_RGBA16_SNORM', 'GL_RGBA32F',
> +
> + 'GL_ALPHA', 'GL_ALPHA4', 'GL_ALPHA8', 'GL_ALPHA12', 'GL_ALPHA16',
> +
> + 'GL_LUMINANCE', 'GL_LUMINANCE4', 'GL_LUMINANCE8', 'GL_SLUMINANCE8',
> + 'GL_LUMINANCE12', 'GL_LUMINANCE16',
> +
> + 'GL_LUMINANCE_ALPHA', 'GL_LUMINANCE4_ALPHA4',
> + 'GL_LUMINANCE6_ALPHA2', 'GL_LUMINANCE8_ALPHA8',
> + 'GL_SLUMINANCE8_ALPHA8', 'GL_LUMINANCE12_ALPHA4',
> + 'GL_LUMINANCE12_ALPHA12', 'GL_LUMINANCE16_ALPHA16',
> +]
> +for format in color_formats:
> + add_concurrent_test(gl11, 'teximage-colors ' + format)
> +
> gl10 = {}
> spec['!OpenGL 1.0'] = gl10
> add_concurrent_test(gl10, 'gl-1.0-beginend-coverage')
> diff --git a/tests/texturing/CMakeLists.gl.txt
> b/tests/texturing/CMakeLists.gl.txt
> index b121163..7d8d512 100644
> --- a/tests/texturing/CMakeLists.gl.txt
> +++ b/tests/texturing/CMakeLists.gl.txt
> @@ -87,5 +87,6 @@ ENDIF (UNIX)
> piglit_add_executable (texsubimage texsubimage.c)
> piglit_add_executable (texture-al texture-al.c)
> piglit_add_executable (texture-rg texture-rg.c)
> +piglit_add_executable (teximage-colors teximage-colors.c)
>
> # vim: ft=cmake:
> diff --git a/tests/texturing/teximage-colors.c
> b/tests/texturing/teximage-colors.c
> new file mode 100644
> index 0000000..c68bddd
> --- /dev/null
> +++ b/tests/texturing/teximage-colors.c
> @@ -0,0 +1,872 @@
> +/*
> + * Copyright 2014 Intel Corporation
> + *
> + * 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,
> sublicense,
> + * 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 NONINFRINGEMENT. IN NO EVENT
> SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS 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 "piglit-util-gl-common.h"
> +
> +#define BENCHMARK_ITERATIONS 1000
> +
> +PIGLIT_GL_TEST_CONFIG_BEGIN
> +
> + config.supports_gl_compat_version = 13;
> +
> + config.window_visual = PIGLIT_GL_VISUAL_RGBA |
> PIGLIT_GL_VISUAL_DOUBLE;
> +
> +PIGLIT_GL_TEST_CONFIG_END
> +
> +struct texture_format {
> + GLenum internal_format;
> + const char *name;
> + GLenum format;
> + GLenum data_type;
> +};
> +
> +struct texture_format formats[] = {
> +#define FORMAT(IF, F, D) { IF, #IF, F, D }
> + FORMAT(GL_RED, GL_RED, GL_NONE),
> + FORMAT(GL_R8, GL_RED, GL_UNSIGNED_BYTE),
> + FORMAT(GL_R8_SNORM, GL_RED, GL_BYTE),
> + FORMAT(GL_R16, GL_RED, GL_UNSIGNED_SHORT),
> + FORMAT(GL_R16_SNORM, GL_RED, GL_SHORT),
> + FORMAT(GL_R16F, GL_RED, GL_NONE),
> + FORMAT(GL_R32F, GL_RED, GL_FLOAT),
> +
> + FORMAT(GL_RG, GL_RG, GL_NONE),
> + FORMAT(GL_RG8, GL_RG, GL_UNSIGNED_BYTE),
> + FORMAT(GL_RG8_SNORM, GL_RG, GL_BYTE),
> + FORMAT(GL_RG16, GL_RG, GL_UNSIGNED_SHORT),
> + FORMAT(GL_RG16_SNORM, GL_RG, GL_SHORT),
> + FORMAT(GL_RG16F, GL_RG, GL_NONE),
> + FORMAT(GL_RG32F, GL_RG, GL_FLOAT),
> +
> + FORMAT(GL_RGB, GL_RGB, GL_NONE),
> + FORMAT(GL_R3_G3_B2, GL_RGB, GL_UNSIGNED_BYTE_3_3_2),
> + FORMAT(GL_RGB4, GL_RGB, GL_UNSIGNED_SHORT_5_6_5),
> + FORMAT(GL_RGB5, GL_RGB, GL_UNSIGNED_SHORT_5_6_5),
> + FORMAT(GL_RGB8, GL_RGB, GL_UNSIGNED_BYTE),
> + FORMAT(GL_RGB8_SNORM, GL_RGB, GL_BYTE),
> + FORMAT(GL_SRGB8, GL_RGB, GL_BYTE),
> + FORMAT(GL_RGB10, GL_RGB, GL_UNSIGNED_SHORT),
> + FORMAT(GL_R11F_G11F_B10F, GL_RGB, GL_NONE),
> + FORMAT(GL_RGB12, GL_RGB, GL_UNSIGNED_SHORT),
> + FORMAT(GL_RGB9_E5, GL_RGB, GL_NONE),
> + FORMAT(GL_RGB16, GL_RGB, GL_UNSIGNED_SHORT),
> + FORMAT(GL_RGB16F, GL_RGB, GL_NONE),
> + FORMAT(GL_RGB16_SNORM, GL_RGB, GL_SHORT),
> + FORMAT(GL_RGB32F, GL_RGB, GL_FLOAT),
> +
> + FORMAT(GL_RGBA, GL_RGBA, GL_NONE),
> + FORMAT(GL_RGBA2, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4),
> + FORMAT(GL_RGBA4, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4),
> + FORMAT(GL_RGB5_A1, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1),
> + FORMAT(GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE),
> + FORMAT(GL_RGB10_A2, GL_RGBA, GL_UNSIGNED_INT_10_10_10_2),
> + FORMAT(GL_RGBA8_SNORM, GL_RGBA, GL_BYTE),
> + FORMAT(GL_SRGB8_ALPHA8, GL_RGBA, GL_BYTE),
> + FORMAT(GL_RGBA12, GL_RGBA, GL_UNSIGNED_BYTE),
> + FORMAT(GL_RGBA16, GL_RGBA, GL_UNSIGNED_SHORT),
> + FORMAT(GL_RGBA16_SNORM, GL_RGBA, GL_SHORT),
> + FORMAT(GL_RGBA32F, GL_RGBA, GL_FLOAT),
> +
> + FORMAT(GL_ALPHA, GL_ALPHA, GL_NONE),
> + FORMAT(GL_ALPHA4, GL_ALPHA, GL_NONE),
> + FORMAT(GL_ALPHA8, GL_ALPHA, GL_UNSIGNED_BYTE),
> + FORMAT(GL_ALPHA12, GL_ALPHA, GL_UNSIGNED_BYTE),
> + FORMAT(GL_ALPHA16, GL_ALPHA, GL_UNSIGNED_SHORT),
> +
> + FORMAT(GL_LUMINANCE, GL_LUMINANCE, GL_NONE),
> + FORMAT(GL_LUMINANCE4, GL_LUMINANCE, GL_NONE),
> + FORMAT(GL_LUMINANCE8, GL_LUMINANCE, GL_UNSIGNED_BYTE),
> + FORMAT(GL_SLUMINANCE8, GL_LUMINANCE, GL_UNSIGNED_BYTE),
> + FORMAT(GL_LUMINANCE12, GL_LUMINANCE, GL_NONE),
> + FORMAT(GL_LUMINANCE16, GL_LUMINANCE, GL_UNSIGNED_SHORT),
> +
> + FORMAT(GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, GL_NONE),
> + FORMAT(GL_LUMINANCE4_ALPHA4, GL_LUMINANCE_ALPHA, GL_NONE),
> + FORMAT(GL_LUMINANCE6_ALPHA2, GL_LUMINANCE_ALPHA, GL_NONE),
> + FORMAT(GL_LUMINANCE8_ALPHA8, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE),
> + FORMAT(GL_SLUMINANCE8_ALPHA8, GL_LUMINANCE_ALPHA,
> GL_UNSIGNED_BYTE),
> + FORMAT(GL_LUMINANCE12_ALPHA4, GL_LUMINANCE_ALPHA, GL_NONE),
> + FORMAT(GL_LUMINANCE12_ALPHA12, GL_LUMINANCE_ALPHA, GL_NONE),
> + FORMAT(GL_LUMINANCE16_ALPHA16, GL_LUMINANCE_ALPHA,
> GL_UNSIGNED_SHORT),
> +#undef FORMAT
> +};
> +
> +#define ARRAY_LENGTH(arr) (sizeof(arr) / sizeof(*arr))
> +
> +static struct texture_format *
> +find_format(const char *name)
> +{
> + int i;
> +
> + for (i = 0; i < ARRAY_LENGTH(formats); ++i)
> + if (strcmp(name, formats[i].name) == 0)
> + return &formats[i];
> +
> + return NULL;
> +}
> +
> +static const GLenum gl_formats[] = {
> + GL_RED,
> + GL_GREEN,
> + GL_BLUE,
> + GL_ALPHA,
> + GL_RG,
> + GL_RGB,
> + GL_BGR,
> + GL_RGBA,
> + GL_BGRA,
> + GL_ABGR_EXT,
> +// GL_INTENSITY,
> + GL_LUMINANCE,
> + GL_LUMINANCE_ALPHA,
> +};
> +
> +static const GLenum gl_types[] = {
> + GL_UNSIGNED_BYTE_3_3_2,
> + GL_UNSIGNED_BYTE_2_3_3_REV,
> + GL_UNSIGNED_SHORT_5_6_5,
> + GL_UNSIGNED_SHORT_5_6_5_REV,
> + GL_UNSIGNED_SHORT_4_4_4_4,
> + GL_UNSIGNED_SHORT_4_4_4_4_REV,
> + GL_UNSIGNED_SHORT_5_5_5_1,
> + GL_UNSIGNED_SHORT_1_5_5_5_REV,
> + GL_UNSIGNED_INT_10_10_10_2,
> + GL_UNSIGNED_INT_2_10_10_10_REV,
> + GL_UNSIGNED_INT_8_8_8_8,
> + GL_UNSIGNED_INT_8_8_8_8_REV,
> + GL_BYTE,
> + GL_UNSIGNED_BYTE,
> + GL_SHORT,
> + GL_UNSIGNED_SHORT,
> + GL_FLOAT,
> + GL_INT,
> + GL_UNSIGNED_INT,
> +};
> +
> +static bool
> +valid_combination(GLenum format, GLenum type)
> +{
> + switch (type) {
> + case GL_UNSIGNED_BYTE_3_3_2:
> + case GL_UNSIGNED_BYTE_2_3_3_REV:
> + case GL_UNSIGNED_SHORT_5_6_5:
> + case GL_UNSIGNED_SHORT_5_6_5_REV:
> + return format == GL_RGB;
> + case GL_UNSIGNED_SHORT_4_4_4_4:
> + case GL_UNSIGNED_SHORT_4_4_4_4_REV:
> + case GL_UNSIGNED_SHORT_5_5_5_1:
> + case GL_UNSIGNED_SHORT_1_5_5_5_REV:
> + case GL_UNSIGNED_INT_10_10_10_2:
> + case GL_UNSIGNED_INT_2_10_10_10_REV:
> + case GL_UNSIGNED_INT_8_8_8_8:
> + case GL_UNSIGNED_INT_8_8_8_8_REV:
> + return format == GL_RGBA || format == GL_BGRA;
> + default:
> + return true;
> + }
> +}
> +
> +static float
> +un_to_float(unsigned char bits, unsigned int color)
> +{
> + unsigned int max = ~(~0ul << bits);
> + return (float)color / (float)max;
> +}
> +
> +static float
> +sn_to_float(unsigned char bits, int color)
> +{
> + int max = ~(~0 << (bits-1));
> + if (color < -max)
> + color = -max;
> + return (float)color / (float)max;
> +}
> +
> +static float
> +srgb_to_linear(float s)
> +{
> + if (s > 0.0405)
> + return pow((s + 0.055) / 1.055, 2.4);
> + else
> + return s / 12.92;
> +}
> +
> +#define UNPACK(val, len, off) ((val) >> off) & ~(~0ul << len)
> +
> +static void
> +to_float(void *data, int num_chan, GLenum type, float *out)
> +{
> + int i;
> +
> + switch (type) {
> + case GL_UNSIGNED_BYTE_3_3_2:
> + assert(num_chan == 3);
> + out[0] = un_to_float(3, UNPACK(*(GLubyte *)data, 3, 5));
> + out[1] = un_to_float(3, UNPACK(*(GLubyte *)data, 3, 2));
> + out[2] = un_to_float(2, UNPACK(*(GLubyte *)data, 2, 0));
> + break;
> + case GL_UNSIGNED_BYTE_2_3_3_REV:
> + assert(num_chan == 3);
> + out[0] = un_to_float(3, UNPACK(*(GLubyte *)data, 3, 0));
> + out[1] = un_to_float(3, UNPACK(*(GLubyte *)data, 3, 3));
> + out[2] = un_to_float(2, UNPACK(*(GLubyte *)data, 2, 6));
> + break;
> + case GL_UNSIGNED_SHORT_5_6_5:
> + assert(num_chan == 3);
> + out[0] = un_to_float(5, UNPACK(*(GLushort *)data, 5, 11));
> + out[1] = un_to_float(6, UNPACK(*(GLushort *)data, 6, 5));
> + out[2] = un_to_float(5, UNPACK(*(GLushort *)data, 5, 0));
> + break;
> + case GL_UNSIGNED_SHORT_5_6_5_REV:
> + assert(num_chan == 3);
> + out[0] = un_to_float(5, UNPACK(*(GLushort *)data, 5, 0));
> + out[1] = un_to_float(6, UNPACK(*(GLushort *)data, 6, 5));
> + out[2] = un_to_float(5, UNPACK(*(GLushort *)data, 5, 11));
> + break;
> + case GL_UNSIGNED_SHORT_4_4_4_4:
> + assert(num_chan == 4);
> + out[0] = un_to_float(4, UNPACK(*(GLushort *)data, 4, 12));
> + out[1] = un_to_float(4, UNPACK(*(GLushort *)data, 4, 8));
> + out[2] = un_to_float(4, UNPACK(*(GLushort *)data, 4, 4));
> + out[3] = un_to_float(4, UNPACK(*(GLushort *)data, 4, 0));
> + break;
> + case GL_UNSIGNED_SHORT_4_4_4_4_REV:
> + assert(num_chan == 4);
> + out[0] = un_to_float(4, UNPACK(*(GLushort *)data, 4, 0));
> + out[1] = un_to_float(4, UNPACK(*(GLushort *)data, 4, 4));
> + out[2] = un_to_float(4, UNPACK(*(GLushort *)data, 4, 8));
> + out[3] = un_to_float(4, UNPACK(*(GLushort *)data, 4, 12));
> + break;
> + case GL_UNSIGNED_SHORT_5_5_5_1:
> + assert(num_chan == 4);
> + out[0] = un_to_float(5, UNPACK(*(GLushort *)data, 5, 11));
> + out[1] = un_to_float(5, UNPACK(*(GLushort *)data, 5, 6));
> + out[2] = un_to_float(5, UNPACK(*(GLushort *)data, 5, 1));
> + out[3] = un_to_float(1, UNPACK(*(GLushort *)data, 1, 0));
> + break;
> + case GL_UNSIGNED_SHORT_1_5_5_5_REV:
> + assert(num_chan == 4);
> + out[0] = un_to_float(5, UNPACK(*(GLushort *)data, 5, 0));
> + out[1] = un_to_float(5, UNPACK(*(GLushort *)data, 5, 5));
> + out[2] = un_to_float(5, UNPACK(*(GLushort *)data, 5, 10));
> + out[3] = un_to_float(1, UNPACK(*(GLushort *)data, 1, 15));
> + break;
> + case GL_UNSIGNED_INT_10_10_10_2:
> + assert(num_chan == 4);
> + out[0] = un_to_float(10, UNPACK(*(GLuint *)data, 10, 22));
> + out[1] = un_to_float(10, UNPACK(*(GLuint *)data, 10, 12));
> + out[2] = un_to_float(10, UNPACK(*(GLuint *)data, 10, 2));
> + out[3] = un_to_float(2, UNPACK(*(GLuint *)data, 2, 0));
> + break;
> + case GL_UNSIGNED_INT_2_10_10_10_REV:
> + assert(num_chan == 4);
> + out[0] = un_to_float(10, UNPACK(*(GLuint *)data, 10, 0));
> + out[1] = un_to_float(10, UNPACK(*(GLuint *)data, 10, 10));
> + out[2] = un_to_float(10, UNPACK(*(GLuint *)data, 10, 20));
> + out[3] = un_to_float(2, UNPACK(*(GLuint *)data, 2, 30));
> + break;
> + case GL_UNSIGNED_INT_8_8_8_8:
> + assert(num_chan == 4);
> + out[0] = un_to_float(8, UNPACK(*(GLuint *)data, 8, 24));
> + out[1] = un_to_float(8, UNPACK(*(GLuint *)data, 8, 16));
> + out[2] = un_to_float(8, UNPACK(*(GLuint *)data, 8, 8));
> + out[3] = un_to_float(8, UNPACK(*(GLuint *)data, 8, 0));
> + break;
> + case GL_UNSIGNED_INT_8_8_8_8_REV:
> + assert(num_chan == 4);
> + out[0] = un_to_float(8, UNPACK(*(GLuint *)data, 8, 0));
> + out[1] = un_to_float(8, UNPACK(*(GLuint *)data, 8, 8));
> + out[2] = un_to_float(8, UNPACK(*(GLuint *)data, 8, 16));
> + out[3] = un_to_float(8, UNPACK(*(GLuint *)data, 8, 24));
> + break;
> + case GL_BYTE:
> + for (i = 0; i < num_chan; ++i)
> + out[i] = sn_to_float(8, ((GLbyte *)data)[i]);
> + break;
> + case GL_UNSIGNED_BYTE:
> + for (i = 0; i < num_chan; ++i)
> + out[i] = un_to_float(8, ((GLubyte *)data)[i]);
> + break;
> + case GL_SHORT:
> + for (i = 0; i < num_chan; ++i)
> + out[i] = sn_to_float(16, ((GLshort *)data)[i]);
> + break;
> + case GL_UNSIGNED_SHORT:
> + for (i = 0; i < num_chan; ++i)
> + out[i] = un_to_float(16, ((GLushort *)data)[i]);
> + break;
> + case GL_FLOAT:
> + for (i = 0; i < num_chan; ++i)
> + out[i] = ((float *)data)[i];
> + break;
> + case GL_INT:
> + for (i = 0; i < num_chan; ++i)
> + out[i] = sn_to_float(32, ((GLint *)data)[i]);
> + break;
> + case GL_UNSIGNED_INT:
> + for (i = 0; i < num_chan; ++i)
> + out[i] = un_to_float(32, ((GLuint *)data)[i]);
> + break;
> + default:
> + assert(!"Invalid type");
> + }
> +}
> +
> +static bool
> +is_format_signed(GLenum format)
> +{
> + switch (format) {
> + case GL_R8_SNORM:
> + case GL_R16_SNORM:
> + case GL_R32F:
> + case GL_RG8_SNORM:
> + case GL_RG16_SNORM:
> + case GL_RG32F:
> + case GL_RGB8_SNORM:
> + case GL_RGB16_SNORM:
> + case GL_RGB32F:
> + case GL_RGBA8_SNORM:
> + case GL_RGBA16_SNORM:
> + case GL_RGBA32F:
> + return true;
> + default:
> + return false;
> + }
> +}
> +
> +static bool
> +is_format_srgb(GLenum format)
> +{
> + switch (format) {
> + case GL_SRGB:
> + case GL_SRGB8:
> + case GL_SRGB_ALPHA:
> + case GL_SRGB8_ALPHA8:
> + case GL_SLUMINANCE:
> + case GL_SLUMINANCE8:
> + case GL_SLUMINANCE_ALPHA:
> + case GL_SLUMINANCE8_ALPHA8:
> + return true;
> + default:
> + return false;
> + }
> +}
> +
> +static int
> +num_channels(GLenum format)
> +{
> + switch (format) {
> + case GL_RED:
> + case GL_GREEN:
> + case GL_BLUE:
> + case GL_ALPHA:
> + case GL_INTENSITY:
> + case GL_LUMINANCE:
> + return 1;
> + case GL_RG:
> + case GL_LUMINANCE_ALPHA:
> + return 2;
> + case GL_RGB:
> + case GL_BGR:
> + return 3;
> + case GL_RGBA:
> + case GL_BGRA:
> + case GL_ABGR_EXT:
> + return 4;
> + default:
> + assert(!"Invalid format");
> + return 0;
> + }
> +}
> +
> +static int
> +bytes_per_pixel(GLenum format, GLenum type)
> +{
> + int channels = num_channels(format);
> +
> + switch (type) {
> + case GL_UNSIGNED_BYTE_3_3_2:
> + case GL_UNSIGNED_BYTE_2_3_3_REV:
> + assert(channels == 3);
> + return 1;
> + case GL_UNSIGNED_SHORT_5_6_5:
> + case GL_UNSIGNED_SHORT_5_6_5_REV:
> + assert(channels == 3);
> + return 2;
> + case GL_UNSIGNED_SHORT_4_4_4_4:
> + case GL_UNSIGNED_SHORT_4_4_4_4_REV:
> + case GL_UNSIGNED_SHORT_5_5_5_1:
> + case GL_UNSIGNED_SHORT_1_5_5_5_REV:
> + assert(channels == 4);
> + return 2;
> + case GL_UNSIGNED_INT_10_10_10_2:
> + case GL_UNSIGNED_INT_2_10_10_10_REV:
> + case GL_UNSIGNED_INT_8_8_8_8:
> + case GL_UNSIGNED_INT_8_8_8_8_REV:
> + assert(channels == 4);
> + return 4;
> + case GL_BYTE:
> + case GL_UNSIGNED_BYTE:
> + return channels;
> + case GL_SHORT:
> + case GL_UNSIGNED_SHORT:
> + return channels * 2;
> + case GL_FLOAT:
> + case GL_INT:
> + case GL_UNSIGNED_INT:
> + return channels * 4;
> + default:
> + assert(!"Invalid type");
> + return 0;
> + }
> +}
> +
> +static const char *frag_shader_unsigned_src =
> +"uniform sampler2D tex; \n"
> +"void main() \n"
> +"{ \n"
> +" gl_FragColor = texture2D(tex, gl_TexCoord[0].xy);\n"
> +"} \n";
> +
> +static const char *frag_shader_signed_src =
> +"uniform sampler2D tex; \n"
> +"void main() \n"
> +"{ \n"
> +" gl_FragColor = 0.5 + 0.5 * texture2D(tex, gl_TexCoord[0].xy);\n"
> +"} \n";
> +
> +int texture_size = 31;
> +struct texture_format *format = NULL;
> +GLuint unsigned_prog, signed_prog;
> +void *rand_data;
> +float tolerance[4];
> +bool benchmark = false;
> +
> +void
> +piglit_init(int argc, char **argv)
> +{
> + int i, seed = 0;
> +
> + for (i = 1; i < argc; ++i) {
> + if (sscanf(argv[i], "--seed=%d", &seed) > 0) {
> + srand(seed);
> + } else if (strcmp(argv[i], "--benchmark") == 0) {
> + benchmark = true;
> + texture_size = 128;
> + } else if (i == argc - 1) {
> + format = find_format(argv[i]);
> + break;
> + }
> + }
> +
> + if (argc < 1) {
> + printf("usage: texstore-colors [--seed=seed] [--benchmark]
> format");
> + exit(1);
> + }
> +
> + piglit_require_extension("GL_EXT_texture_integer");
> +
> + assert(format);
> +
> + signed_prog = piglit_build_simple_program(NULL,
> frag_shader_signed_src);
> + unsigned_prog = piglit_build_simple_program(NULL,
> frag_shader_unsigned_src);
> +
> + srand(seed);
> + rand_data = malloc(texture_size * texture_size * 128);
> + for (i = 0; i < texture_size * texture_size * 128; ++i)
> + ((GLubyte *)rand_data)[i] = rand();
> +
> + if (is_format_srgb(format->internal_format)) {
> + /* We loose a little precision in the high numbers */
> + tolerance[0] = 0.02;
> + tolerance[1] = 0.02;
> + tolerance[2] = 0.02;
> + tolerance[3] = 0.02;
> + } else {
> + tolerance[0] = 0.01;
> + tolerance[1] = 0.01;
> + tolerance[2] = 0.01;
> + tolerance[3] = 0.01;
> + }
> +
> + if (format->internal_format == GL_R11F_G11F_B10F) {
> + tolerance[0] = 0.3;
> + tolerance[1] = 0.3;
> + tolerance[2] = 0.3;
> + }
> +
> + switch (format->data_type) {
> + case GL_UNSIGNED_BYTE_3_3_2:
> + case GL_UNSIGNED_BYTE_2_3_3_REV:
> + tolerance[0] = 0.3;
> + tolerance[1] = 0.3;
> + tolerance[2] = 0.3;
> + break;
> + case GL_UNSIGNED_SHORT_5_5_5_1:
> + case GL_UNSIGNED_SHORT_1_5_5_5_REV:
> + tolerance[3] = 0.6;
> + case GL_UNSIGNED_SHORT_5_6_5:
> + case GL_UNSIGNED_SHORT_5_6_5_REV:
> + tolerance[0] = 0.05;
> + tolerance[1] = 0.05;
> + tolerance[2] = 0.05;
> + break;
> + case GL_UNSIGNED_SHORT_4_4_4_4:
> + case GL_UNSIGNED_SHORT_4_4_4_4_REV:
> + tolerance[0] = 0.1;
> + tolerance[1] = 0.1;
> + tolerance[2] = 0.1;
> + tolerance[3] = 0.1;
> + break;
> + case GL_UNSIGNED_INT_10_10_10_2:
> + case GL_UNSIGNED_INT_2_10_10_10_REV:
> + tolerance[3] = 0.3;
> + break;
> + }
> +}
> +
> +void
> +to_expected(GLenum test_format, GLenum test_type, void *up_raw, float
> *expected)
> +{
> + float up_rgba[4];
> + int num_chan = num_channels(test_format);
> +
> + to_float(up_raw, num_chan, test_type, up_rgba);
> +
> + expected[0] = 0.0f;
> + expected[1] = 0.0f;
> + expected[2] = 0.0f;
> + expected[3] = 1.0f;
> +
> + switch (test_format) {
> + case GL_RED:
> + expected[0] = up_rgba[0];
> + break;
> + case GL_GREEN:
> + expected[1] = up_rgba[0];
> + break;
> + case GL_BLUE:
> + expected[2] = up_rgba[0];
> + break;
> + case GL_ALPHA:
> + expected[3] = up_rgba[0];
> + break;
> + case GL_RG:
> + expected[0] = up_rgba[0];
> + expected[1] = up_rgba[1];
> + break;
> + case GL_RGBA:
> + expected[3] = up_rgba[3];
> + case GL_RGB:
> + expected[0] = up_rgba[0];
> + expected[1] = up_rgba[1];
> + expected[2] = up_rgba[2];
> + break;
> + case GL_BGRA:
> + expected[3] = up_rgba[3];
> + case GL_BGR:
> + expected[0] = up_rgba[2];
> + expected[1] = up_rgba[1];
> + expected[2] = up_rgba[0];
> + break;
> + case GL_ABGR_EXT:
> + expected[0] = up_rgba[3];
> + expected[1] = up_rgba[2];
> + expected[2] = up_rgba[1];
> + expected[3] = up_rgba[0];
> + break;
> + case GL_INTENSITY:
> + expected[0] = up_rgba[0];
> + expected[1] = up_rgba[0];
> + expected[2] = up_rgba[0];
> + expected[3] = up_rgba[0];
> + break;
> + case GL_LUMINANCE_ALPHA:
> + expected[3] = up_rgba[1];
> + case GL_LUMINANCE:
> + expected[0] = up_rgba[0];
> + expected[1] = up_rgba[0];
> + expected[2] = up_rgba[0];
> + break;
> + default:
> + assert(!"Invalid color format");
> + }
> +
> + switch (format->format) {
> + case GL_RED:
> + case GL_RED_INTEGER:
> + expected[1] = 0.0f;
> + case GL_RG:
> + case GL_RG_INTEGER:
> + expected[2] = 0.0f;
> + case GL_RGB:
> + case GL_RGB_INTEGER:
> + expected[3] = 1.0f;
> + break;
> + case GL_RGBA:
> + case GL_RGBA_INTEGER:
> + break;
> + case GL_ALPHA:
> + expected[0] = 0.0f;
> + expected[1] = 0.0f;
> + expected[2] = 0.0f;
> + break;
> + case GL_LUMINANCE:
> + expected[3] = 1.0f;
> + case GL_LUMINANCE_ALPHA:
> + expected[0] = expected[0];
> + expected[1] = expected[0];
> + expected[2] = expected[0];
> + break;
> + default:
> + assert(!"Invalid color format");
> + }
> +
> + if (!is_format_signed(format->internal_format)) {
> + if (expected[0] < 0.0f)
> + expected[0] = 0.0f;
> + if (expected[1] < 0.0f)
> + expected[1] = 0.0f;
> + if (expected[2] < 0.0f)
> + expected[2] = 0.0f;
> + if (expected[3] < 0.0f)
> + expected[3] = 0.0f;
> + }
> +
> + if (is_format_srgb(format->internal_format)) {
> + expected[0] = srgb_to_linear(expected[0]);
> + expected[1] = srgb_to_linear(expected[1]);
> + expected[2] = srgb_to_linear(expected[2]);
> + }
> +}
> +
> +enum piglit_result
> +run_test(GLenum test_format, GLenum test_type, float *time_out)
> +{
> + bool pass = true;
> + int64_t time;
> + GLuint tex;
> + int i, Bpp, channels;
> + float *tmp, *expected, *observed;
> + void *data;
> +
> + glGenTextures(1, &tex);
> + glBindTexture(GL_TEXTURE_2D, tex);
> + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
> + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
> +
> + glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
> +
> + channels = num_channels(test_format);
> + Bpp = bytes_per_pixel(test_format, test_type);
> +
> + if (test_type == GL_FLOAT) {
> + /* Sanatize so we don't get invalid floating point values
> */
> + tmp = malloc(texture_size * texture_size * channels *
> sizeof(float));
> + for (i = 0; i < texture_size * texture_size * channels;
> ++i)
> + tmp[i] = sn_to_float(32, ((GLint *)rand_data)[i]);
> + data = tmp;
> + } else {
> + tmp = NULL;
> + data = rand_data;
> + }
> +
> + expected = malloc(texture_size * texture_size * 4 * sizeof(float));
> + for (i = 0; i < texture_size * texture_size; ++i)
> + to_expected(test_format, test_type, (GLubyte *)data + (i *
> Bpp),
> + expected + 4 * i);
> +
> + if (benchmark) {
> + time = piglit_get_microseconds();
> + for (i = 0; i < BENCHMARK_ITERATIONS; ++i)
> + glTexImage2D(GL_TEXTURE_2D, 0,
> format->internal_format,
> + texture_size, texture_size, 0,
> + test_format, test_type, data);
> + time = piglit_get_microseconds() - time;
> + *time_out = (double)time / (double)BENCHMARK_ITERATIONS;
> + } else {
> + glTexImage2D(GL_TEXTURE_2D, 0, format->internal_format,
> + texture_size, texture_size, 0,
> + test_format, test_type, data);
> + }
> + pass &= piglit_check_gl_error(GL_NO_ERROR);
> +
> + if (is_format_signed(format->internal_format)) {
> + glUseProgram(signed_prog);
> +
> + for (i = 0; i < texture_size * texture_size * 4; ++i)
> + expected[i] = 0.5 + 0.5 * expected[i];
> + } else {
> + glUseProgram(unsigned_prog);
> + }
> +
> + piglit_draw_rect_tex(0, 0, texture_size, texture_size, 0, 0, 1, 1);
> +
> + observed = malloc(texture_size * texture_size * 4 * sizeof(float));
> + glReadPixels(0, 0, texture_size, texture_size,
> + GL_RGBA, GL_FLOAT, observed);
> + pass &= piglit_check_gl_error(GL_NO_ERROR);
> +
> + pass &= piglit_compare_images_color(0, 0, texture_size,
> texture_size, 4,
> + tolerance, expected, observed);
> +
> + free(observed);
> + free(expected);
> + free(tmp);
> +
> + piglit_report_subtest_result(pass ? PIGLIT_PASS : PIGLIT_FAIL,
> + "%s texture with %s and %s",
> +
> piglit_get_gl_enum_name(format->internal_format),
> + piglit_get_gl_enum_name(test_format),
> + piglit_get_gl_enum_name(test_type));
> +
> + glDeleteTextures(1, &tex);
> +
> + return pass;
> +}
> +
> +bool
> +test_exact()
> +{
> + int i, Bpp, channels;
> + float *tmp_float;
> + GLubyte *data, *observed;
> + GLint tex_width, tex_height;
> + bool pass = true;
> +
> + if (format->data_type == GL_NONE) {
> + piglit_report_subtest_result(PIGLIT_SKIP,
> + "Exact upload-download of %s",
> +
> piglit_get_gl_enum_name(format->internal_format));
> + return true;
> + }
> +
> + channels = num_channels(format->format);
> + Bpp = bytes_per_pixel(format->format, format->data_type);
> +
> + if (format->data_type == GL_FLOAT) {
> + /* Sanatize so we don't get invalid floating point values
> */
> + tmp_float = malloc(texture_size * texture_size *
> + channels * sizeof(float));
> + for (i = 0; i < texture_size * texture_size * channels;
> ++i)
> + tmp_float[i] = sn_to_float(32, ((GLint
> *)rand_data)[i]);
> + data = (GLubyte *)tmp_float;
> + } else {
> + tmp_float = NULL;
> + data = rand_data;
> + }
> +
> + glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
> + glTexImage2D(GL_TEXTURE_2D, 0, format->internal_format,
> + texture_size, texture_size, 0, format->format,
> + format->data_type, data);
> + pass &= piglit_check_gl_error(GL_NO_ERROR);
> +
> + glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH,
> &tex_width);
> + glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT,
> &tex_height);
> + glPixelStorei(GL_PACK_ALIGNMENT, 1);
> + observed = malloc(tex_width * tex_height * Bpp);
> +
> + glGetTexImage(GL_TEXTURE_2D, 0, format->format, format->data_type,
> + observed);
> + pass &= piglit_check_gl_error(GL_NO_ERROR);
> +
> + for (i = 0; i < texture_size; ++i)
> + pass &= memcmp(&data[i * texture_size * Bpp],
> + &observed[i * tex_width * Bpp],
> + texture_size * Bpp) == 0;
> +
> + free(observed);
> + free(tmp_float);
> +
> + piglit_report_subtest_result(pass ? PIGLIT_PASS : PIGLIT_FAIL,
> + "Exact upload-download of %s",
> +
> piglit_get_gl_enum_name(format->internal_format));
> +
> + return pass;
> +}
> +
> +enum piglit_result
> +piglit_display(void)
> +{
> + bool warn = false, pass = true;
> + GLuint rb, fbo;
> + int i, j;
> + float times[ARRAY_LENGTH(gl_formats)][ARRAY_LENGTH(gl_types)];
> +
> + glGenRenderbuffersEXT(1, &rb);
> + glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, rb);
> + glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT,
> + GL_RGBA, texture_size, texture_size);
> + pass &= piglit_check_gl_error(GL_NO_ERROR);
> +
> + glGenFramebuffersEXT(1, &fbo);
> + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo);
> + glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
> + GL_COLOR_ATTACHMENT0_EXT,
> + GL_RENDERBUFFER_EXT, rb);
> + pass &= piglit_check_gl_error(GL_NO_ERROR);
> +
> + /* Set up basic GL stuff */
> + glEnable(GL_TEXTURE_2D);
> + glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
> + piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
> +
> + warn = !test_exact();
> +
> + for (i = 0; i < ARRAY_LENGTH(gl_formats); ++i) {
> + for (j = 0; j < ARRAY_LENGTH(gl_types); ++j) {
> + if (!valid_combination(gl_formats[i], gl_types[j]))
> + continue;
> +
> + pass &= run_test(gl_formats[i], gl_types[j],
> + ×[i][j]);
> + }
> + }
> +
> + glDisable(GL_TEXTURE_2D);
> + glDeleteFramebuffers(1, &fbo);
> + glDeleteRenderbuffers(1, &rb);
> +
> + if (benchmark) {
> + fprintf(stdout, "internalFormat, format, type, time
> (us/call)\n");
> + for (i = 0; i < ARRAY_LENGTH(gl_formats); ++i) {
> + for (j = 0; j < ARRAY_LENGTH(gl_types); ++j) {
> + if (!valid_combination(gl_formats[i],
> gl_types[j]))
> + continue;
> +
> + fprintf(stdout, "%s, %s, %s, %.3f\n",
> +
> piglit_get_gl_enum_name(format->internal_format),
> +
> piglit_get_gl_enum_name(gl_formats[i]),
> +
> piglit_get_gl_enum_name(gl_types[j]),
> + times[i][j]);
> + }
> + }
> + }
> +
> + if (pass) {
> + return warn ? PIGLIT_WARN : PIGLIT_PASS;
> + } else {
> + return PIGLIT_FAIL;
> + }
> +}
> --
> 2.1.0
>
>
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