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/* Copyright © 2012 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.
*/
/** @file edgeflag.c
*
* Test for glEdgeFlagPointerv() API working with a GLSL program enabled.
*
* The i965 driver had a bug where edge flags didn't work under GLSL.
* We also use both gl_Vertex and a user attribute so that edge flags
* sit in the middle of the list of vertex attributes and results
* in Mesa.
*/
#include "piglit-util-gl-common.h"
#include "minmax-test.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.window_width = 32;
config.window_height = 32;
config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_ALPHA;
PIGLIT_GL_TEST_CONFIG_END
static GLuint color_index;
enum piglit_result
piglit_display(void)
{
bool pass = true;
float green[] = {0, 1, 0, 0};
float clear[] = {0.5, 0.5, 0.5, 0.5};
struct {
GLfloat x, y;
GLfloat r, g, b, a;
GLboolean edgeflag;
} verts[] = {
{ 1.5, 1.5, 0.0, 1.0, 0.0, 0.0, GL_TRUE },
{ 5.5, 1.5, 0.0, 1.0, 0.0, 0.0, GL_FALSE },
{ 5.5, 5.5, 0.0, 1.0, 0.0, 0.0, GL_TRUE },
{ 1.5, 5.5, 0.0, 1.0, 0.0, 0.0, GL_FALSE },
};
piglit_ortho_projection(piglit_width, piglit_height, false);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glClearColor(0.5, 0.5, 0.5, 0.5);
glClear(GL_COLOR_BUFFER_BIT);
glColor4f(0, 1, 0, 0);
glVertexPointer(2, GL_FLOAT, sizeof(verts[0]), &verts[0].x);
glVertexAttribPointer(color_index, 4, GL_FLOAT, GL_FALSE,
sizeof(verts[0]), &verts[0].r);
glEdgeFlagPointer(sizeof(verts[0]), &verts[0].edgeflag);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableVertexAttribArray(color_index);
glEnableClientState(GL_EDGE_FLAG_ARRAY);
glDrawArrays(GL_POLYGON, 0, 4);
pass = piglit_probe_pixel_rgba(3, 1, green) && pass;
pass = piglit_probe_pixel_rgba(3, 5, green) && pass;
pass = piglit_probe_pixel_rgba(1, 3, clear) && pass;
pass = piglit_probe_pixel_rgba(5, 3, clear) && pass;
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
const char *vs_source =
"attribute vec4 in_color;\n"
"varying vec4 color;\n"
"\n"
"void main()\n"
"{\n"
" gl_Position = ftransform();\n"
" color = in_color;\n"
"}\n";
const char *fs_source =
"varying vec4 color;\n"
"\n"
"void main()\n"
"{\n"
" gl_FragColor = color;\n"
"}\n";
void
piglit_init(int argc, char **argv)
{
GLuint vs, fs, prog;
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_source);
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_source);
prog = piglit_link_simple_program(vs, fs);
if (!prog || !vs || !fs) {
printf("VS source:\n%s", vs_source);
printf("FS source:\n%s", fs_source);
piglit_report_result(PIGLIT_FAIL);
}
glUseProgram(prog);
color_index = glGetAttribLocation(prog, "in_color");
}
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