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/*
* 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.
*
* Author: Chris Forbes <chrisf@ijw.co.nz>
*/
/**
* \file clear-into-view-2d.c
* This tests that glClear() into a 2D texture view (with nonzero MinLayer)
* of a 2D texture array works.
*/
#include "piglit-util-gl-common.h"
#include "common.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
enum piglit_result
piglit_display(void)
{
return PIGLIT_FAIL;
}
#define NUM_LAYERS 7
#define VIEW_MIN_LAYER 2
#define VIEW_NUM_LAYERS 1
#define TEX_SIZE 64
void
piglit_init(int argc, char **argv)
{
GLuint tex, view;
GLuint fbo;
int i, j;
bool pass = true;
piglit_require_extension("GL_ARB_texture_view");
/* build a 2d array texture; no mip levels */
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D_ARRAY, tex);
glTexStorage3D(GL_TEXTURE_2D_ARRAY, 1,
GL_RGBA8, TEX_SIZE, TEX_SIZE, NUM_LAYERS);
for (i=0; i < NUM_LAYERS; i++) {
GLubyte *pixels = create_solid_image(TEX_SIZE, TEX_SIZE,
1, 4, i);
if (!pixels) {
printf("Allocation failure for layer %d\n", i);
piglit_report_result(PIGLIT_FAIL);
}
glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0,
0, 0, i, TEX_SIZE, TEX_SIZE, 1,
GL_RGBA, GL_UNSIGNED_BYTE, pixels);
free(pixels);
}
/* create a view of just one layer, as a non-array 2d texture */
glGenTextures(1, &view);
glTextureView(view, GL_TEXTURE_2D, tex, GL_RGBA8,
0, 1, VIEW_MIN_LAYER, VIEW_NUM_LAYERS);
if (!piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
/* set up for rendering into the view */
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, view, 0);
if (glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
piglit_report_result(PIGLIT_FAIL);
glViewport(0, 0, TEX_SIZE, TEX_SIZE);
glClearColor(Colors[NUM_LAYERS][0] / 255.0f,
Colors[NUM_LAYERS][1] / 255.0f,
Colors[NUM_LAYERS][2] / 255.0f,
Colors[NUM_LAYERS][3] / 255.0f);
glClear(GL_COLOR_BUFFER_BIT);
if (!piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
/* bind the underlying texture and readback */
glBindTexture(GL_TEXTURE_2D_ARRAY, tex);
for (i = 0; i < NUM_LAYERS; i++) {
/* the single layer inside the view should have been replaced.
* everything else should be untouched.
*/
float expected_color[4];
int color_index = i;
if (i >= VIEW_MIN_LAYER && i < VIEW_MIN_LAYER + VIEW_NUM_LAYERS) {
color_index = i + NUM_LAYERS - VIEW_MIN_LAYER;
}
printf("Testing layer %d\n", i);
for (j = 0; j < 4; j++)
expected_color[j] = Colors[color_index][j] / 255.0f;
pass = piglit_probe_texel_volume_rgba(GL_TEXTURE_2D_ARRAY, 0,
0, 0, i,
TEX_SIZE, TEX_SIZE, 1,
expected_color) && pass;
}
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
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