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/*
* Copyright (c) The Piglit project 2007
*
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS 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.
*/
/**
* Test whether LIT honours the output mask.
*/
#include "piglit-util.h"
PIGLIT_GL_TEST_MAIN(
200 /*window_width*/,
200 /*window_height*/,
GLUT_RGB | GLUT_ALPHA | GLUT_DOUBLE | GLUT_DEPTH)
static GLuint FragProg[15];
static const char fragProgramTemplate[] =
"!!ARBfp1.0\n"
"PARAM values = { 0.65, 0.9, 0.0, 8.0 }; \n"
"PARAM bogus = { 0.8, 0.8, 0.8, 0.8 }; \n"
"MOV result.color, bogus; \n"
"LIT result.color.%s, values; \n"
"END\n";
static float LitExpected[4] = { 1.0, 0.65, 0.433, 1.0 };
static void DoFrame(void)
{
int mask;
glClearColor(0.0, 0.0, 0.0, 0.0);
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glEnable(GL_FRAGMENT_PROGRAM_ARB);
for(mask = 1; mask < 16; ++mask) {
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, FragProg[mask-1]);
glPushMatrix();
glTranslatef((mask % 4), (mask / 4), 0.0);
glBegin(GL_QUADS);
glVertex2f(0, 0);
glVertex2f(1, 0);
glVertex2f(1, 1);
glVertex2f(0, 1);
glEnd();
glPopMatrix();
}
}
static int DoTest( void )
{
int mask;
GLfloat dmax;
dmax = 0;
for(mask = 1; mask < 16; ++mask) {
GLfloat probe[4];
GLfloat delta[4];
int i;
glReadPixels(piglit_width * (2*(mask%4)+1)/8,
piglit_height * (2*(mask/4)+1)/8, 1, 1,
GL_RGBA, GL_FLOAT, probe);
printf("Probe %i: %f,%f,%f,%f\n", mask, probe[0], probe[1], probe[2], probe[3]);
for(i = 0; i < 4; ++i) {
if (mask & (1 << i))
delta[i] = probe[i] - LitExpected[i];
else
delta[i] = probe[i] - 0.8;
if (delta[i] > dmax) dmax = delta[i];
else if (-delta[i] > dmax) dmax = -delta[i];
}
printf(" Delta: %f,%f,%f,%f\n", delta[0], delta[1], delta[2], delta[3]);
}
printf("Max delta: %f\n", dmax);
if (dmax >= 0.02)
return 0;
else
return 1;
}
enum piglit_result
piglit_display(void)
{
int pass;
DoFrame();
pass = DoTest();
glutSwapBuffers();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
static void Reshape(int width, int height)
{
piglit_width = width;
piglit_height = height;
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0, 4.0, 0.0, 4.0, -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
void piglit_init(int argc, char **argv)
{
int mask;
glutReshapeFunc(Reshape);
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
piglit_require_fragment_program();
/*
* Fragment programs
*/
for(mask = 1; mask < 16; ++mask) {
char programText[1024];
char maskstring[5];
maskstring[0] = 0;
if (mask & 1) strcat(maskstring, "x");
if (mask & 2) strcat(maskstring, "y");
if (mask & 4) strcat(maskstring, "z");
if (mask & 8) strcat(maskstring, "w");
sprintf(programText, fragProgramTemplate, maskstring);
FragProg[mask-1] = piglit_compile_program(GL_FRAGMENT_PROGRAM_ARB, programText);
}
Reshape(piglit_width, piglit_height);
}
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