[Piglit] [PATCH] arb_texture_view: verify that 2darray can be sampled as cube

Ilia Mirkin imirkin at alum.mit.edu
Wed Aug 20 19:35:07 PDT 2014


Yep, I caught that about 5s after I sent it out :) And Chris provided
some additional feedback, v2 sent (+ another test that does cubearray)

On Wed, Aug 20, 2014 at 10:30 PM, Dylan Baker <baker.dylan.c at gmail.com> wrote:
> Presumably you want to add this to all.py so it gets run.
>
> On Wednesday, August 20, 2014 09:55:33 PM Ilia Mirkin wrote:
>> Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
>> ---
>>  tests/spec/arb_texture_view/CMakeLists.gl.txt      |   1 +
>>  .../sampling-2d-array-as-cubemap.c                 | 119 +++++++++++++++++++++
>>  2 files changed, 120 insertions(+)
>>  create mode 100644 tests/spec/arb_texture_view/sampling-2d-array-as-cubemap.c
>>
>> diff --git a/tests/spec/arb_texture_view/CMakeLists.gl.txt b/tests/spec/arb_texture_view/CMakeLists.gl.txt
>> index f939707..293c8d6 100644
>> --- a/tests/spec/arb_texture_view/CMakeLists.gl.txt
>> +++ b/tests/spec/arb_texture_view/CMakeLists.gl.txt
>> @@ -26,5 +26,6 @@ piglit_add_executable(arb_texture_view-clear-into-view-2d-array clear-into-view-
>>  piglit_add_executable(arb_texture_view-clear-into-view-layered clear-into-view-layered.c common.c)
>>  piglit_add_executable(arb_texture_view-rendering-formats rendering-formats.c)
>>  piglit_add_executable(arb_texture_view-copytexsubimage-layers copytexsubimage-layers.c common.c)
>> +piglit_add_executable(arb_texture_view-sampling-2d-array-as-cubemap sampling-2d-array-as-cubemap.c)
>>
>>  # vim: ft=cmake:
>> diff --git a/tests/spec/arb_texture_view/sampling-2d-array-as-cubemap.c b/tests/spec/arb_texture_view/sampling-2d-array-as-cubemap.c
>> new file mode 100644
>> index 0000000..3661027
>> --- /dev/null
>> +++ b/tests/spec/arb_texture_view/sampling-2d-array-as-cubemap.c
>> @@ -0,0 +1,119 @@
>> +/*
>> + * Copyright © 2014 Ilia Mirkin
>> + *
>> + * 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: Ilia Mirkin <imirkin at alum.mit.edu>
>> + */
>> +
>> +/**
>> + * \file sampling-2d-array-as-cubemap.c
>> + * This tests that you can cast from a 2D Array texture to a Cubemap
>> + * texture and sample from the Cubemap view.
>> + */
>> +
>> +#include "piglit-util-gl.h"
>> +
>> +PIGLIT_GL_TEST_CONFIG_BEGIN
>> +
>> +     config.supports_gl_compat_version = 30;
>> +     config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
>> +
>> +PIGLIT_GL_TEST_CONFIG_END
>> +
>> +static float green[] = {0, 1, 0, 1};
>> +static float red[] = {1, 0, 0, 1};
>> +
>> +enum piglit_result
>> +piglit_display(void)
>> +{
>> +     GLboolean pass;
>> +
>> +     glViewport(0, 0, piglit_width, piglit_height);
>> +     glClearColor(0.5, 0.5, 0.5, 0.5);
>> +     glClear(GL_COLOR_BUFFER_BIT);
>> +
>> +     piglit_draw_rect(-1, -1, 2, 2);
>> +
>> +     pass = piglit_probe_rect_rgba(-1, -1, 2, 2, green);
>> +
>> +     piglit_present_results();
>> +
>> +     return pass ? PIGLIT_PASS : PIGLIT_FAIL;
>> +}
>> +
>> +void
>> +piglit_init(int argc, char **argv)
>> +{
>> +     char *vsCode;
>> +     char *fsCode;
>> +     int tex_loc_cube, prog_cube, l;
>> +     GLuint tex_2DArray, tex_Cube;
>> +
>> +     piglit_require_extension("GL_ARB_texture_view");
>> +     piglit_require_extension("GL_EXT_texture_array");
>> +     piglit_require_extension("GL_ARB_texture_cube_map");
>> +
>> +     /* setup shaders and program object for Cube rendering */
>> +     asprintf(&vsCode,
>> +              "void main()\n"
>> +              "{\n"
>> +              "    gl_Position = gl_Vertex;\n"
>> +              "}\n");
>> +     asprintf(&fsCode,
>> +              "uniform samplerCube tex;\n"
>> +              "void main()\n"
>> +              "{\n"
>> +              "   vec4 color  = textureCube(tex, vec3(-1, 0, 0));\n"
>> +              "   gl_FragColor = vec4(color.xyz, 1.0);\n"
>> +              "}\n");
>> +     prog_cube = piglit_build_simple_program(vsCode, fsCode);
>> +     free(fsCode);
>> +     free(vsCode);
>> +     tex_loc_cube = glGetUniformLocation(prog_cube, "tex");
>> +
>> +     glGenTextures(1, &tex_2DArray);
>> +     glActiveTexture(GL_TEXTURE0);
>> +     glBindTexture(GL_TEXTURE_2D_ARRAY, tex_2DArray);
>> +
>> +     glTexStorage3D(GL_TEXTURE_2D_ARRAY, 1, GL_RGBA8, 1, 1, 8);
>> +
>> +     /* load each array layer with a different color texture */
>> +     for (l = 0; l < 8; l++) {
>> +             glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0, 0, 0, l,
>> +                             1, 1, 1, GL_RGBA, GL_FLOAT, red);
>> +     }
>> +     /* make array layer 3 have green */
>> +     glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0, 0, 0, 3,
>> +                     1, 1, 1, GL_RGBA, GL_FLOAT, green);
>> +
>> +     glGenTextures(1, &tex_Cube);
>> +     /* the texture view starts at layer 2, so face 1 (-X) will have green */
>> +     glTextureView(tex_Cube, GL_TEXTURE_CUBE_MAP, tex_2DArray, GL_RGBA8,
>> +                   0, 1, 2, 6);
>> +     glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
>> +     glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
>> +
>> +     glActiveTexture(GL_TEXTURE0);
>> +     glBindTexture(GL_TEXTURE_CUBE_MAP, tex_Cube);
>> +
>> +     glUseProgram(prog_cube);
>> +     glUniform1i(tex_loc_cube, 0);
>> +}
>> --
>> 1.8.5.5
>>
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