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/*
* Copyright © 2010 Marek Olšák <maraeo@gmail.com>
*
* 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:
* Marek Olšák <maraeo@gmail.com>
*/
/* The test for some tricky bits of the OpenGL vertex submission.
* The emphasis is taken on non-dword-aligned strides and offsets.
* This one is for half float vertices.
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
320 /*window_width*/,
60 /*window_height*/,
PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE)
GLboolean user_va = GL_FALSE;
void piglit_init(int argc, char **argv)
{
unsigned i;
for (i = 1; i < argc; i++) {
if (!strcmp(argv[i], "user")) {
user_va = GL_TRUE;
puts("Testing user vertex arrays.");
}
}
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
piglit_require_gl_version(15);
piglit_require_extension("GL_ARB_half_float_vertex");
glShadeModel(GL_FLAT);
glClearColor(0.2, 0.2, 0.2, 1.0);
}
static GLuint vboVertexPointer(GLint size, GLenum type, GLsizei stride,
const GLvoid *buf, GLsizei bufSize, intptr_t bufOffset)
{
GLuint id;
if (user_va) {
glVertexPointer(size, type, stride, (char*)buf + bufOffset);
return 0;
}
glGenBuffers(1, &id);
glBindBuffer(GL_ARRAY_BUFFER, id);
glBufferData(GL_ARRAY_BUFFER, bufSize, buf, GL_STATIC_DRAW);
glVertexPointer(size, type, stride, (void*)bufOffset);
return id;
}
static void test_half_vertices_wrapped(unsigned short x1, unsigned short y1,
unsigned short x2, unsigned short y2,
unsigned short one, int index)
{
unsigned short v2[] = {
x1, y1,
x1, y2,
x2, y1
};
unsigned short v3[] = {
x1, y1, 0,
x1, y2, 0,
x2, y1, 0
};
unsigned short v4[] = {
x1, y1, 0, one,
x1, y2, 0, one,
x2, y1, 0, one
};
unsigned short v2o[] = {
0,
x1, y1,
x1, y2,
x2, y1
};
unsigned short v3o[] = {
0,
x1, y1, 0,
x1, y2, 0,
x2, y1, 0
};
unsigned short v4o[] = {
0,
x1, y1, 0, one,
x1, y2, 0, one,
x2, y1, 0, one
};
GLuint vbo;
switch (index) {
case 0: vbo = vboVertexPointer(2, GL_HALF_FLOAT_ARB, 4, v2, sizeof(v2), 0); break;
case 1: vbo = vboVertexPointer(2, GL_HALF_FLOAT_ARB, 6, v3, sizeof(v3), 0); break;
case 2: vbo = vboVertexPointer(3, GL_HALF_FLOAT_ARB, 6, v3, sizeof(v3), 0); break;
case 3: vbo = vboVertexPointer(2, GL_HALF_FLOAT_ARB, 8, v4, sizeof(v4), 0); break;
case 4: vbo = vboVertexPointer(3, GL_HALF_FLOAT_ARB, 8, v4, sizeof(v4), 0); break;
case 5: vbo = vboVertexPointer(4, GL_HALF_FLOAT_ARB, 8, v4, sizeof(v4), 0); break;
case 6: vbo = vboVertexPointer(2, GL_HALF_FLOAT_ARB, 4, v2o, sizeof(v2o), 2); break;
case 7: vbo = vboVertexPointer(2, GL_HALF_FLOAT_ARB, 6, v3o, sizeof(v3o), 2); break;
case 8: vbo = vboVertexPointer(3, GL_HALF_FLOAT_ARB, 6, v3o, sizeof(v3o), 2); break;
case 9: vbo = vboVertexPointer(2, GL_HALF_FLOAT_ARB, 8, v4o, sizeof(v4o), 2); break;
case 10:vbo = vboVertexPointer(3, GL_HALF_FLOAT_ARB, 8, v4o, sizeof(v4o), 2); break;
case 11:vbo = vboVertexPointer(4, GL_HALF_FLOAT_ARB, 8, v4o, sizeof(v4o), 2); break;
default:vbo = 0; assert(0); break;
}
glDrawArrays(GL_TRIANGLES, 0, 3);
if (vbo)
glDeleteBuffers(1, &vbo);
}
static void test_half_vertices(float fx1, float fy1, float fx2, float fy2, int index)
{
unsigned short x1, y1, x2, y2, one;
x1 = piglit_half_from_float(fx1);
y1 = piglit_half_from_float(fy1);
x2 = piglit_half_from_float(fx2);
y2 = piglit_half_from_float(fy2);
one = piglit_half_from_float(1);
test_half_vertices_wrapped(x1, y1, x2, y2, one, index);
}
struct test {
void (*test)(float x1, float y1, float x2, float y2, int index);
int index;
float expected_color[3];
const char *name;
};
struct test tests[] = {
{test_half_vertices, 0, {1, 1, 1}, "Half vertices - components: 2, stride: 4, offset: 0"},
{test_half_vertices, 1, {1, 1, 1}, "Half vertices - components: 2, stride: 6, offset: 0"},
{test_half_vertices, 2, {1, 1, 1}, "Half vertices - components: 3, stride: 6, offset: 0"},
{test_half_vertices, 3, {1, 1, 1}, "Half vertices - components: 2, stride: 8, offset: 0"},
{test_half_vertices, 4, {1, 1, 1}, "Half vertices - components: 3, stride: 8, offset: 0"},
{test_half_vertices, 5, {1, 1, 1}, "Half vertices - components: 4, stride: 8, offset: 0"},
{test_half_vertices, 6, {1, 1, 1}, "Half vertices - components: 2, stride: 4, offset: 2"},
{test_half_vertices, 7, {1, 1, 1}, "Half vertices - components: 2, stride: 6, offset: 2"},
{test_half_vertices, 8, {1, 1, 1}, "Half vertices - components: 3, stride: 6, offset: 2"},
{test_half_vertices, 9, {1, 1, 1}, "Half vertices - components: 2, stride: 8, offset: 2"},
{test_half_vertices, 10, {1, 1, 1}, "Half vertices - components: 3, stride: 8, offset: 2"},
{test_half_vertices, 11, {1, 1, 1}, "Half vertices - components: 4, stride: 8, offset: 2"},
{0}
};
enum piglit_result
piglit_display(void)
{
GLboolean pass = GL_TRUE;
unsigned i;
float x = 0, y = 0;
glClear(GL_COLOR_BUFFER_BIT);
glEnableClientState(GL_VERTEX_ARRAY);
for (i = 0; tests[i].test; i++) {
glBindBuffer(GL_ARRAY_BUFFER, 0);
printf("%s\n", tests[i].name);
tests[i].test(x, y, x+20, y+20, tests[i].index);
assert(glGetError() == 0);
pass = piglit_probe_pixel_rgb(x+5, y+5, tests[i].expected_color) && pass;
x += 20;
if (x > 300) {
x = 0;
y += 20;
}
}
glFinish();
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
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