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/*
* Copyright © 2009 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.
*
* Authors:
* Chris Lord <chris@openedhand.com>
* Eric Anholt <eric@anholt.net>
*
*/
/** @file s3tc-teximage.c
*
* Tests that a full S3TC-compressed mipmap tree can be created and
* used.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
#ifdef PIGLIT_USE_OPENGL
config.supports_gl_compat_version = 11;
#else // PIGLIT_USE_OPENGL_ES2
config.supports_gl_es_version = 20;
#endif
config.window_width = 500;
config.window_height = 600;
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
#define SIZE 128
const float red[4] = {1.0, 0.0, 0.0, 1.0};
const float green[4] = {0.0, 1.0, 0.0, 1.0};
const float blue[4] = {0.0, 0.0, 1.0, 1.0};
const float white[4] = {1.0, 1.0, 1.0, 1.0};
#ifdef PIGLIT_USE_OPENGL_ES2
const char *vs_source =
"#version 100\n"
"attribute vec4 piglit_vertex;\n"
"attribute vec2 piglit_texcoord;\n"
"varying mediump vec2 tex_coord;\n"
"uniform mat4 proj;\n"
"\n"
"void main()\n"
"{\n"
" gl_Position = proj * piglit_vertex;\n"
" tex_coord = piglit_texcoord;\n"
"}\n";
const char *fs_source =
"#version 100\n"
"varying mediump vec2 tex_coord;\n"
"uniform sampler2D tex;\n"
"\n"
"void main()\n"
"{\n"
" gl_FragColor = texture2D(tex, tex_coord);\n"
"}\n";
#include "piglit-matrix.h"
GLint tex_program;
#endif
static void
display_mipmaps(int start_x, int start_y)
{
int i;
#ifdef PIGLIT_USE_OPENGL
glEnable(GL_TEXTURE_2D);
#endif
/* Disply all the mipmap levels */
for (i = SIZE; i > 0; i /= 2) {
piglit_draw_rect_tex(start_x, start_y, i, i,
0.0f, 0.0f, 1.0f, 1.0f);
start_x += i + 5;
}
}
static GLboolean
check_resulting_mipmaps(int x, int y)
{
GLboolean pass = GL_TRUE;
int size;
for (size = SIZE; size > 0; size /= 2) {
if (size == 4)
pass = pass && piglit_probe_pixel_rgb(x + 2, y + 2,
red);
else if (size == 2)
pass = pass && piglit_probe_pixel_rgb(x + 1, y + 1,
green);
else if (size == 1)
pass = pass && piglit_probe_pixel_rgb(x, y,
blue);
else {
pass = pass && piglit_probe_pixel_rgb(x + size / 4,
y + size / 4,
red);
pass = pass && piglit_probe_pixel_rgb(x + size * 3 / 4,
y + size / 4,
green);
pass = pass && piglit_probe_pixel_rgb(x + size / 4,
y + size * 3 / 4,
blue);
pass = pass && piglit_probe_pixel_rgb(x + size * 3 / 4,
y + size * 3 / 4,
white);
}
x += size + 5;
}
return pass;
}
enum piglit_result
piglit_display(void)
{
GLuint tex;
GLboolean pass = GL_TRUE;
glClearColor(0, 0, 0, 0);
glClear(GL_COLOR_BUFFER_BIT);
tex = piglit_rgbw_texture(GL_COMPRESSED_RGB_S3TC_DXT1_EXT, SIZE, SIZE,
GL_TRUE, GL_FALSE, GL_UNSIGNED_NORMALIZED);
display_mipmaps(10, 10 + (10 + SIZE) * 0);
glDeleteTextures(1, &tex);
tex = piglit_rgbw_texture(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, SIZE, SIZE,
GL_TRUE, GL_FALSE, GL_UNSIGNED_NORMALIZED);
display_mipmaps(10, 10 + (10 + SIZE) * 1);
glDeleteTextures(1, &tex);
tex = piglit_rgbw_texture(GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, SIZE, SIZE,
GL_TRUE, GL_FALSE, GL_UNSIGNED_NORMALIZED);
display_mipmaps(10, 10 + (10 + SIZE) * 2);
glDeleteTextures(1, &tex);
tex = piglit_rgbw_texture(GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, SIZE, SIZE,
GL_TRUE, GL_FALSE, GL_UNSIGNED_NORMALIZED);
display_mipmaps(10, 10 + (10 + SIZE) * 3);
glDeleteTextures(1, &tex);
pass = pass && check_resulting_mipmaps(10, 10 + (10 + SIZE) * 0);
pass = pass && check_resulting_mipmaps(10, 10 + (10 + SIZE) * 1);
pass = pass && check_resulting_mipmaps(10, 10 + (10 + SIZE) * 2);
pass = pass && check_resulting_mipmaps(10, 10 + (10 + SIZE) * 3);
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
piglit_require_extension("GL_EXT_texture_compression_s3tc");
#ifdef PIGLIT_USE_OPENGL
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
#else // PIGLIT_USE_OPENGL_ES2
tex_program = piglit_build_simple_program(vs_source, fs_source);
glUseProgram(tex_program);
GLint proj_loc = glGetUniformLocation(tex_program, "proj");
piglit_ortho_uniform(proj_loc, piglit_width, piglit_height);
#endif
}
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