[Piglit] [PATCH v2] arb_texture_view: Add test for 2d layer as 2d
Ilia Mirkin
imirkin at alum.mit.edu
Thu Oct 15 16:20:42 PDT 2015
Reviewed-by: Ilia Mirkin <imirkin at alum.mit.edu>
On Thu, Oct 15, 2015 at 7:10 PM, Glenn Kennard <glenn.kennard at gmail.com> wrote:
> Test that layers other than 0 from a 2d layer texture
> can be used in a 2d texture view.
>
> Signed-off-by: Glenn Kennard <glenn.kennard at gmail.com>
> ---
> tests/all.py | 2 +
> tests/spec/arb_texture_view/CMakeLists.gl.txt | 1 +
> .../sampling-2d-array-as-2d-layer.c | 195 +++++++++++++++++++++
> 3 files changed, 198 insertions(+)
> create mode 100644 tests/spec/arb_texture_view/sampling-2d-array-as-2d-layer.c
>
> diff --git a/tests/all.py b/tests/all.py
> index 610d89f..738cec2 100644
> --- a/tests/all.py
> +++ b/tests/all.py
> @@ -2451,6 +2451,8 @@ with profile.group_manager(
> 'sampling-2d-array-as-cubemap')
> g(['arb_texture_view-sampling-2d-array-as-cubemap-array'],
> 'sampling-2d-array-as-cubemap-array')
> + g(['arb_texture_view-sampling-2d-array-as-2d-layer'],
> + 'sampling-2d-array-as-2d-layer')
>
> with profile.group_manager(
> PiglitGLTest,
> diff --git a/tests/spec/arb_texture_view/CMakeLists.gl.txt b/tests/spec/arb_texture_view/CMakeLists.gl.txt
> index 197731a..772f8b4 100644
> --- a/tests/spec/arb_texture_view/CMakeLists.gl.txt
> +++ b/tests/spec/arb_texture_view/CMakeLists.gl.txt
> @@ -23,6 +23,7 @@ piglit_add_executable(arb_texture_view-rendering-formats rendering-formats.c)
> piglit_add_executable(arb_texture_view-rendering-layers rendering_layers.c common.c)
> piglit_add_executable(arb_texture_view-rendering-levels rendering_levels.c common.c)
> piglit_add_executable(arb_texture_view-rendering-target rendering_target.c common.c)
> +piglit_add_executable(arb_texture_view-sampling-2d-array-as-2d-layer sampling-2d-array-as-2d-layer.c)
> piglit_add_executable(arb_texture_view-sampling-2d-array-as-cubemap-array sampling-2d-array-as-cubemap-array.c)
> piglit_add_executable(arb_texture_view-sampling-2d-array-as-cubemap sampling-2d-array-as-cubemap.c)
> piglit_add_executable(arb_texture_view-targets targets.c common.c)
> diff --git a/tests/spec/arb_texture_view/sampling-2d-array-as-2d-layer.c b/tests/spec/arb_texture_view/sampling-2d-array-as-2d-layer.c
> new file mode 100644
> index 0000000..65074d2
> --- /dev/null
> +++ b/tests/spec/arb_texture_view/sampling-2d-array-as-2d-layer.c
> @@ -0,0 +1,195 @@
> +/*
> + * Copyright © 2015 Glenn Kennard
> + *
> + * 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.
> + *
> + * Author: Glenn Kennard <glenn.kennard at gmail.com>
> + */
> +
> +/**
> + * \file sampling-2d-array-as-2d-layer.c
> + * This tests that you can cast from a 2D Array texture to a regular 2D texture
> + * with layer>0 and sample from the latter.
> + */
> +
> +#include "piglit-util-gl.h"
> +
> +PIGLIT_GL_TEST_CONFIG_BEGIN
> + config.supports_gl_compat_version = 30;
> +// config.supports_gl_core_version = 32;
> + config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
> +
> +PIGLIT_GL_TEST_CONFIG_END
> +
> +static const float green[] = {0, 1, 0, 1};
> +static const float red[] = {1, 0, 0, 1};
> +
> +typedef struct Params {
> + int num_layers;
> + int width;
> + int height;
> + const char * const desc;
> +} Params;
> +
> +/* test a few size combinations that tend to require particular alignment
> + requirements by the hardware */
> +static const Params testparams[] = {
> + { 8, 1, 1, "1x1" },
> + { 3, 2, 1, "2x1" },
> + { 3, 8, 1, "8x1" },
> + { 1, 16, 1, "16x1" },
> + { 5, 1, 16, "1x16" },
> + { 9, 32, 32, "32x32" },
> + { 2, 64, 64, "64x64" },
> + { 4, 128, 64, "128x64" },
> + { 3, 35, 67, "35x67" }
> +};
> +
> +static float *makesolidimage(int w, int h, const float color[4])
> +{
> + float *p = malloc(w * h * 4 * sizeof(GLfloat));
> + size_t n;
> + assert(p);
> + for (n = 0; n < w * h; n++) {
> + p[n*4 + 0] = color[0];
> + p[n*4 + 1] = color[1];
> + p[n*4 + 2] = color[2];
> + p[n*4 + 3] = color[3];
> + }
> + return p;
> +}
> +
> +static bool
> +test_single_layer(const Params* p, int layer)
> +{
> + int l;
> + GLuint tex_src, tex_view;
> + GLboolean pass;
> + GLfloat *image;
> +
> + assert(layer < p->num_layers);
> +
> + glGenTextures(1, &tex_src);
> + glBindTexture(GL_TEXTURE_2D_ARRAY, tex_src);
> +
> + glTexStorage3D(GL_TEXTURE_2D_ARRAY, 1, GL_RGBA8, p->width, p->height, p->num_layers);
> +
> + /* load each array layer with red */
> + image = makesolidimage(p->width, p->height, red);
> + for (l = 0; l < p->num_layers; l++) {
> + glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0, 0, 0, l,
> + p->width, p->height, 1, GL_RGBA, GL_FLOAT, image);
> + }
> +
> + /* make layer to check red, but green for pixel at (0,0) which should be the only one sampled */
> + memcpy(image, green, sizeof(green));
> +
> + glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0, 0, 0, layer,
> + p->width, p->height, 1, GL_RGBA, GL_FLOAT, image);
> +
> + free(image);
> +
> + glGenTextures(1, &tex_view);
> + /* checked layer is supposed to be green */
> + glTextureView(tex_view, GL_TEXTURE_2D, tex_src, GL_RGBA8,
> + 0, 1, layer, 1);
> + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
> + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
> + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
> + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
> +
> + glBindTexture(GL_TEXTURE_2D, tex_view);
> +
> + /* draw it! */
> + piglit_draw_rect(-1, -1, 2, 2);
> +
> + pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height, green);
> + if (!pass) {
> + printf("layer %d failed\n", layer);
> + }
> +
> + glDeleteTextures(1, &tex_view);
> + glDeleteTextures(1, &tex_src);
> +
> + return pass;
> +}
> +
> +enum piglit_result
> +piglit_display(void)
> +{
> + GLboolean pass = GL_TRUE;
> + size_t n;
> + int layer;
> +
> + glViewport(0, 0, piglit_width, piglit_height);
> + glClearColor(0.0, 0.0, 1.0, 1.0);
> +
> + for (n = 0; n < ARRAY_SIZE(testparams); n++) {
> + GLboolean subtest_pass = GL_TRUE;
> + for (layer = 0; layer < testparams[n].num_layers; layer++) {
> + glClear(GL_COLOR_BUFFER_BIT);
> +
> + subtest_pass &= test_single_layer(&testparams[n], layer);
> + }
> + piglit_report_subtest_result(subtest_pass ? PIGLIT_PASS : PIGLIT_FAIL,
> + testparams[n].desc);
> + pass &= subtest_pass;
> + }
> +
> + piglit_present_results();
> +
> + return pass ? PIGLIT_PASS : PIGLIT_FAIL;
> +}
> +
> +void
> +piglit_init(int argc, char **argv)
> +{
> + int tex_loc_view, prog_view;
> + char *vsCode;
> + char *fsCode;
> +
> + piglit_require_extension("GL_ARB_texture_view");
> + piglit_require_extension("GL_ARB_texture_storage");
> +
> + /* setup shaders and program object for texture rendering */
> + vsCode =
> + "#version 130\n"
> + "void main()\n"
> + "{\n"
> + " gl_Position = gl_Vertex;\n"
> + "}\n";
> + fsCode =
> + "#version 130\n"
> + "uniform sampler2D tex;\n"
> + "void main()\n"
> + "{\n"
> + " ivec2 size = textureSize(tex, 0);\n"
> + /* texel in (0,0) should be the only green texel in the entire texture */
> + " vec2 offset = vec2(0.5/float(size.x), 0.5/float(size.y));\n"
> + " vec4 color = texture(tex, offset);\n"
> + " gl_FragColor = vec4(color.xyz, 1.0);\n"
> + "}\n";
> + prog_view = piglit_build_simple_program(vsCode, fsCode);
> + tex_loc_view = glGetUniformLocation(prog_view, "tex");
> +
> + glUseProgram(prog_view);
> + glDeleteProgram(prog_view);
> + glUniform1i(tex_loc_view, 0);
> +}
> --
> 1.9.1
>
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