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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.
*/
/**
* \file vp-clipdistance-02.c
* Test disabling a clip plane, but writing a clip distance for that plane.
*
* For each test square, all of the clip planes except one are enabled. For
* all of the enabled plane a positive value is written. For the one disabled
* plane a negative value is written. No clipping should occur.
*
* \author Ian Romanick <ian.d.romanick@intel.com>
*/
#include "piglit-util-gl.h"
#define TEST_ROWS 1
#define TEST_COLS 6
#define BOX_SIZE 32
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
config.window_width = (((BOX_SIZE+1)*TEST_COLS)+1);
config.window_height = (((BOX_SIZE+1)*TEST_ROWS)+1);
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
PIGLIT_GL_TEST_CONFIG_END
static const char vertex_source_template[] =
"!!ARBvp1.0\n"
"OPTION NV_vertex_program2;\n"
"MOV result.clip[0].x, vertex.texcoord[0].y;\n"
"MOV result.clip[1].x, vertex.texcoord[0].y;\n"
"MOV result.clip[2].x, vertex.texcoord[0].y;\n"
"MOV result.clip[3].x, vertex.texcoord[0].y;\n"
"MOV result.clip[4].x, vertex.texcoord[0].y;\n"
"MOV result.clip[5].x, vertex.texcoord[0].y;\n"
"MOV result.clip[%d].x, vertex.texcoord[0].x;\n"
PIGLIT_VERTEX_PROGRAM_MVP_TRANSFORM
"END\n"
;
static const char fragment_source[] =
"!!ARBfp1.0\n"
"MOV result.color, {0.0, 1.0, 0.0, 1.0};\n"
"END"
;
/**
* \name Handles to programs.
*/
/*@{*/
static GLint progs[TEST_COLS];
static GLint frag_prog;
/*@}*/
static const GLfloat clear_color[4] = { 0.5, 0.5, 0.5, 1.0 };
enum piglit_result
piglit_display(void)
{
static const GLfloat color[4] = { 0.0, 1.0, 0.0, 1.0 };
enum piglit_result result = PIGLIT_PASS;
unsigned i;
glClear(GL_COLOR_BUFFER_BIT);
/* Initially, enable all of the clip planes.
*/
for (i = 0; i < 6; i++)
glEnable(GL_CLIP_PLANE0 + i);
for (i = 0; i < ARRAY_SIZE(progs); i++) {
const int x = 1 + (i * (BOX_SIZE + 1));
glBindProgramARB(GL_VERTEX_PROGRAM_ARB, progs[i]);
glDisable(GL_CLIP_PLANE0 + i);
piglit_draw_rect_tex(x, 1, BOX_SIZE, BOX_SIZE,
1.0, 1.0, -2.0, 0.0);
glEnable(GL_CLIP_PLANE0 + i);
if (!piglit_probe_pixel_rgb(x + (BOX_SIZE / 2),
1 + (BOX_SIZE / 2),
color)) {
result = PIGLIT_FAIL;
}
}
piglit_present_results();
return result;
}
void
piglit_init(int argc, char **argv)
{
unsigned i;
(void) argc;
(void) argv;
piglit_require_vertex_program();
piglit_require_fragment_program();
piglit_require_extension("GL_NV_vertex_program2_option");
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
for (i = 0; i < ARRAY_SIZE(progs); i++) {
char shader_source[1024];
snprintf(shader_source, sizeof(shader_source),
vertex_source_template, i);
progs[i] = piglit_compile_program(GL_VERTEX_PROGRAM_ARB,
shader_source);
}
glEnable(GL_FRAGMENT_PROGRAM_ARB);
glEnable(GL_VERTEX_PROGRAM_ARB);
frag_prog = piglit_compile_program(GL_FRAGMENT_PROGRAM_ARB,
fragment_source);
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, frag_prog);
glClearColor(clear_color[0],
clear_color[1],
clear_color[2],
clear_color[3]);
}
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