[Piglit] [PATCH] arb_copy_image: add new format swizzle test

Marek Olšák maraeo at gmail.com
Fri Sep 4 11:11:16 PDT 2015


Hi Brian,

You don't need to spend more time on the swizzling for ARB_copy_image
if you don't want to. I have it almost done:
http://cgit.freedesktop.org/~mareko/mesa/commit/?h=arb-copy-image

Marek


On Tue, Sep 1, 2015 at 4:14 PM, Brian Paul <brianp at vmware.com> wrote:
> Check that copies between textures whose formats may only differ by
> swizzling works correctly.
>
> v2: move test code into piglit_init()
> ---
>  tests/all.py                                |   1 +
>  tests/spec/arb_copy_image/CMakeLists.gl.txt |   1 +
>  tests/spec/arb_copy_image/format-swizzle.c  | 232 ++++++++++++++++++++++++++++
>  3 files changed, 234 insertions(+)
>  create mode 100644 tests/spec/arb_copy_image/format-swizzle.c
>
> diff --git a/tests/all.py b/tests/all.py
> index 9320722..0285bc1 100644
> --- a/tests/all.py
> +++ b/tests/all.py
> @@ -3897,6 +3897,7 @@ with profile.group_manager(
>      g(['arb_copy_image-formats', '--samples=2'])
>      g(['arb_copy_image-formats', '--samples=4'])
>      g(['arb_copy_image-formats', '--samples=8'])
> +    g(['arb_copy_image-format-swizzle'])
>
>  with profile.group_manager(
>          PiglitGLTest, grouptools.join('spec', 'arb_cull_distance')) as g:
> diff --git a/tests/spec/arb_copy_image/CMakeLists.gl.txt b/tests/spec/arb_copy_image/CMakeLists.gl.txt
> index f1a59e3..90e9270 100644
> --- a/tests/spec/arb_copy_image/CMakeLists.gl.txt
> +++ b/tests/spec/arb_copy_image/CMakeLists.gl.txt
> @@ -12,6 +12,7 @@ piglit_add_executable (arb_copy_image-simple simple.c)
>  piglit_add_executable (arb_copy_image-api_errors api_errors.c)
>  piglit_add_executable (arb_copy_image-targets targets.c)
>  piglit_add_executable (arb_copy_image-formats formats.c)
> +piglit_add_executable (arb_copy_image-format-swizzle format-swizzle.c)
>  piglit_add_executable (arb_copy_image-srgb-copy srgb-copy.c)
>
>  # vim: ft=cmake:
> diff --git a/tests/spec/arb_copy_image/format-swizzle.c b/tests/spec/arb_copy_image/format-swizzle.c
> new file mode 100644
> index 0000000..08ce432
> --- /dev/null
> +++ b/tests/spec/arb_copy_image/format-swizzle.c
> @@ -0,0 +1,232 @@
> +/*
> + * Copyright 2015 VMware, Inc.
> + *
> + * 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.
> + */
> +
> +/**
> + * This test exercises some subtle format issues for GL_ARB_copy_image.
> + * If a driver supports texture formats which only vary by swizzling (ex: RGBA vs.
> + * BGRA) we may wind up using different hardware texture formats depending
> + * on the user-specified format and type arguments to glTexImage.
> + * When we try to copy between such textures, the copy-sub-image code
> + * must be able to handle the swizzling.
> + *
> + * Brian Paul
> + * 31 August 2015
> + */
> +
> +
> +#include "piglit-util-gl.h"
> +
> +PIGLIT_GL_TEST_CONFIG_BEGIN
> +       config.supports_gl_compat_version = 13;
> +       config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
> +PIGLIT_GL_TEST_CONFIG_END
> +
> +
> +static bool
> +test_combination(GLenum intFormat,
> +                GLenum srcFormat, GLenum srcType,
> +                GLenum dstFormat, GLenum dstType)
> +{
> +       const int width = 16, height = 16;
> +       int i;
> +       GLuint textures[2];
> +       GLubyte *image, *getimage;
> +       bool pass = true;
> +       int comps;
> +
> +       switch (srcFormat) {
> +       case GL_RGB:
> +       case GL_BGR:
> +               comps = 3;
> +               break;
> +       case GL_RGBA:
> +       case GL_BGRA:
> +       case GL_RGBA_INTEGER:
> +       case GL_BGRA_INTEGER:
> +               comps = 4;
> +               break;
> +       default:
> +               assert(!"Unexpected format");
> +               comps = 4;
> +       }
> +
> +       getimage = malloc(width * height * comps);
> +
> +       image = malloc(width * height * comps);
> +       if (comps == 4) {
> +               for (i = 0; i < width * height; i++) {
> +                       image[i * 4 + 0] = 0xff;
> +                       image[i * 4 + 1] = 0x80;
> +                       image[i * 4 + 2] = 0x40;
> +                       image[i * 4 + 3] = 0x20;
> +               }
> +       }
> +       else {
> +               for (i = 0; i < width * height; i++) {
> +                       image[i * 3 + 0] = 0xff;
> +                       image[i * 3 + 1] = 0x80;
> +                       image[i * 3 + 2] = 0x40;
> +               }
> +       }
> +
> +       glGenTextures(2, textures);
> +
> +       /* setup tex0 */
> +       glBindTexture(GL_TEXTURE_2D, textures[0]);
> +       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
> +       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
> +       glTexImage2D(GL_TEXTURE_2D, 0, intFormat, width, height, 0,
> +                    srcFormat, srcType, image);
> +
> +       /* setup tex1 */
> +       glBindTexture(GL_TEXTURE_2D, textures[1]);
> +       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
> +       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
> +       glTexImage2D(GL_TEXTURE_2D, 0, intFormat, width, height, 0,
> +                    dstFormat, dstType, NULL);
> +
> +       if (!piglit_check_gl_error(GL_NO_ERROR)) {
> +               /* should be no errors */
> +               pass = false;
> +       }
> +
> +       /* Copy from tex0 to tex1 */
> +       glCopyImageSubData(textures[0], GL_TEXTURE_2D, 0, /* src image */
> +                          0, 0, 0,  /* src offset */
> +                          textures[1], GL_TEXTURE_2D, 0, /* dst image */
> +                          0, 0, 0,  /* dst offset */
> +                          width, height, 1);  /* src size */
> +
> +       /* Readback tex1 */
> +       glGetTexImage(GL_TEXTURE_2D, 0, srcFormat, srcType, getimage);
> +
> +       if (memcmp(image, getimage, width * height * comps) != 0) {
> +               printf("Failure:\n");
> +               printf("  internal tex format=%s\n",
> +                      piglit_get_gl_enum_name(intFormat));
> +               printf("  src tex format=%s type=%s\n",
> +                      piglit_get_gl_enum_name(srcFormat),
> +                      piglit_get_gl_enum_name(srcType));
> +               printf("  dst tex format=%s type=%s\n",
> +                      piglit_get_gl_enum_name(dstFormat),
> +                      piglit_get_gl_enum_name(dstType));
> +               printf("Expected %u %u %u %u\n",
> +                      image[0], image[1], image[2], image[3]);
> +               printf("Found %u %u %u %u\n",
> +                      getimage[0], getimage[1], getimage[2], getimage[3]);
> +               pass = false;
> +       }
> +
> +       glDeleteTextures(2, textures);
> +
> +       free(image);
> +       free(getimage);
> +
> +       return pass;
> +}
> +
> +
> +enum piglit_result
> +piglit_display(void)
> +{
> +       /* nothing */
> +       return PIGLIT_SKIP;
> +}
> +
> +
> +void
> +piglit_init(int argc, char **argv)
> +{
> +       static const GLenum formats[] = {
> +               GL_RGBA,
> +               GL_BGRA
> +       };
> +       static const GLenum rgbFormats[] = {
> +               GL_RGB,
> +               GL_BGR
> +       };
> +       static const GLenum intFormats[] = {
> +               GL_RGBA_INTEGER,
> +               GL_BGRA_INTEGER,
> +       };
> +       static const GLenum types[] = {
> +               GL_UNSIGNED_BYTE,
> +               GL_UNSIGNED_INT_8_8_8_8,
> +               GL_UNSIGNED_INT_8_8_8_8_REV,
> +       };
> +       int sf, st, df, dt;
> +       bool pass = true;
> +
> +       piglit_require_extension("GL_ARB_copy_image");
> +
> +       /* Test all RGBA format/type combinations for the src/dst textures */
> +       for (sf = 0; sf < ARRAY_SIZE(formats); sf++) {
> +               for (df = 0; df < ARRAY_SIZE(formats); df++) {
> +                       for (st = 0; st < ARRAY_SIZE(types); st++) {
> +                               for (dt = 0; dt < ARRAY_SIZE(types); dt++) {
> +                                       if (!test_combination(GL_RGBA,
> +                                                             formats[sf],
> +                                                             types[st],
> +                                                             formats[df],
> +                                                             types[dt])) {
> +                                               pass = false;
> +                                       }
> +                               }
> +                       }
> +               }
> +       }
> +
> +       /* RGB formats */
> +       for (sf = 0; sf < ARRAY_SIZE(rgbFormats); sf++) {
> +               for (df = 0; df < ARRAY_SIZE(rgbFormats); df++) {
> +                       if (!test_combination(GL_RGBA,
> +                                             rgbFormats[sf],
> +                                             GL_UNSIGNED_BYTE,
> +                                             rgbFormats[df],
> +                                             GL_UNSIGNED_BYTE)) {
> +                               pass = false;
> +                       }
> +               }
> +       }
> +
> +       /* integer formats */
> +        if (piglit_is_extension_supported("GL_EXT_texture_integer")) {
> +               for (sf = 0; sf < ARRAY_SIZE(intFormats); sf++) {
> +                       for (df = 0; df < ARRAY_SIZE(intFormats); df++) {
> +                               for (st = 0; st < ARRAY_SIZE(types); st++) {
> +                                       for (dt = 0; dt < ARRAY_SIZE(types); dt++) {
> +                                               if (!test_combination(GL_RGBA8UI,
> +                                                                     intFormats[sf],
> +                                                                     types[st],
> +                                                                     intFormats[df],
> +                                                                     types[dt])) {
> +                                                       pass = false;
> +                                               }
> +                                       }
> +                               }
> +                       }
> +               }
> +       }
> +
> +       piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
> +}
> --
> 1.9.1
>
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