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/*
* Copyright © 2010 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:
* Eric Anholt <eric@anholt.net>
*
*/
/** @file glsl-orangebook-ch06-bump.c
*
* Tests that the Orange Book's chapter 6 shader for procedural bumpmapping
* works correctly.
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.window_width = 100;
config.window_height = 100;
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
PIGLIT_GL_TEST_CONFIG_END
static int bump_density_location, bump_size_location;
static int specular_factor_location, surface_color_location;
static int light_position_location, tangent_attrib;
static GLint prog;
enum piglit_result
piglit_display(void)
{
GLboolean pass = GL_TRUE;
static const float surface_color[3] = {0.7, 0.6, 0.18};
static const float test_specular[3] = {0.976, 0.894, 0.549};
static const float test_nonspecular[3] = {0.572, 0.490, 0.145};
static const float test_bump_dark[3] = {0.411, 0.352, 0.105};
static const float test_bump_light[3] = {1.0, 0.961, 0.557};
float light_position[3] = {-1.0, -1.0, 2.0};
float w = piglit_width;
float h = piglit_height;
float bump_x = w * 3 / 8;
float bump_y = h * 3 / 8;
float x, y;
piglit_ortho_projection(1, 1, GL_FALSE);
glClearColor(0.5, 0.5, 0.5, 0.5);
glClear(GL_COLOR_BUFFER_BIT);
glUniform1f(bump_density_location, 4);
glUniform1f(bump_size_location, 0.15);
glUniform1f(specular_factor_location, 0.5);
glUniform3fv(surface_color_location, 1, surface_color);
glUniform3fv(light_position_location, 1, light_position);
glTranslatef(0, 0, -0.5);
glNormal3f(0.0, 0.0, 1.0);
glVertexAttrib3f(tangent_attrib, 1.0, 0.0, 0.0);
for (x = 0.0; x < 1.0; x += 0.1) {
for (y = 0.0; y < 1.0; y += 0.1) {
piglit_draw_rect_tex(x, y, 0.1, 0.1,
x, y, 0.1, 0.1);
}
}
/* Corners of the image: A highly specular point, and a
* non-specular point.
*/
pass &= piglit_probe_pixel_rgb(0, 0, test_specular);
pass &= piglit_probe_pixel_rgb(piglit_width - 1, piglit_height - 1,
test_nonspecular);
/* Look at a bump -- does it have a lit part and an unlit part? */
pass &= piglit_probe_pixel_rgb(bump_x + w / 16, bump_y + h / 16,
test_bump_dark);
pass &= piglit_probe_pixel_rgb(bump_x - w / 16, bump_y - h / 16,
test_bump_light);
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
GLint vs, fs;
piglit_require_gl_version(20);
vs = piglit_compile_shader(GL_VERTEX_SHADER,
"shaders/glsl-orangebook-ch06-bump.vert");
fs = piglit_compile_shader(GL_FRAGMENT_SHADER,
"shaders/glsl-orangebook-ch06-bump.frag");
prog = piglit_link_simple_program(vs, fs);
glUseProgram(prog);
bump_density_location = glGetUniformLocation(prog, "BumpDensity");
bump_size_location = glGetUniformLocation(prog, "BumpSize");
specular_factor_location = glGetUniformLocation(prog, "SpecularFactor");
surface_color_location = glGetUniformLocation(prog, "SurfaceColor");
light_position_location = glGetUniformLocation(prog, "LightPosition");
assert(bump_density_location != -1);
assert(bump_size_location != -1);
assert(specular_factor_location != -1);
assert(surface_color_location != -1);
assert(light_position_location != -1);
tangent_attrib = glGetAttribLocation(prog, "Tangent");
assert(tangent_attrib != -1);
}
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