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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.
*/
/**
* According to the ARB_fragment_program spec, section 3.11.6,
* sampling an incomplete texture image yields (0,0,0,1).
*/
#include "piglit-util.h"
#define NUM_PROGRAMS 5
static GLuint FragProg[NUM_PROGRAMS];
static const char* const ProgramText[NUM_PROGRAMS] = {
"!!ARBfp1.0\n"
"TEX result.color, fragment.color, texture[0], 2D;\n"
"END",
"!!ARBfp1.0\n"
"TEX result.color, fragment.color, texture[0], 3D;\n"
"END",
"!!ARBfp1.0\n"
"TEX result.color, fragment.color, texture[0], 1D;\n"
"END",
"!!ARBfp1.0\n"
"TEX result.color, fragment.color, texture[0], CUBE;\n"
"END",
"!!ARBfp1.0\n"
"TEX result.color, fragment.color, texture[0], RECT;\n"
"END"
};
static int Automatic = 0;
static int Width = 300, Height = 200;
static void DoFrame(void)
{
int i;
glClearColor(0.3, 0.3, 0.3, 0.3);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_FRAGMENT_PROGRAM_ARB);
for(i = 0; i < NUM_PROGRAMS; ++i) {
pglBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, FragProg[i]);
glPushMatrix();
glTranslatef(i/2, i%2, 0);
glBegin(GL_QUADS);
glVertex2f(0, 0);
glVertex2f(1, 0);
glVertex2f(1, 1);
glVertex2f(0, 1);
glEnd();
glPopMatrix();
}
glutSwapBuffers();
}
static const struct {
const char* name;
float x, y;
float expected[4];
} Probes[] = {
{
"incomplete 2D",
0.5, 0.5,
{ 0,0,0,1 }
},
{
"incomplete 3D",
0.5, 1.5,
{ 0,0,0,1 }
},
{
"incomplete 1D",
1.5, 0.5,
{ 0,0,0,1 }
},
{
"incomplete CUBE",
1.5, 1.5,
{ 0,0,0,1 }
},
{
"incomplete RECT",
2.5, 0.5,
{ 0,0,0,1 }
},
{
"sanity",
2.5, 1.5,
{ 0.3,0.3,0.3,0.3 }
},
// Sentinel!
{
0,
0, 0,
{ 0, 0, 0, 0 }
}
};
static int DoTest( void )
{
int idx;
GLfloat dmax;
glReadBuffer( GL_FRONT );
dmax = 0;
idx = 0;
while(Probes[idx].name) {
GLfloat probe[4];
GLfloat delta[4];
int i;
glReadPixels((int)(Probes[idx].x*Width/3),
(int)(Probes[idx].y*Height/2),
1, 1,
GL_RGBA, GL_FLOAT, probe);
printf("%20s (%3.1f,%3.1f): %f,%f,%f,%f",
Probes[idx].name,
Probes[idx].x, Probes[idx].y,
probe[0], probe[1], probe[2], probe[3]);
for(i = 0; i < 4; ++i) {
delta[i] = probe[i] - Probes[idx].expected[i];
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]);
idx++;
}
printf("Max delta: %f\n", dmax);
if (dmax >= 0.02)
return 0;
else
return 1;
}
static void Redisplay(void)
{
int succ;
DoFrame();
succ = DoTest();
if (Automatic) {
printf("\nPIGLIT: { 'result': '%s' }\n", succ ? "pass" : "fail");
exit(0);
}
}
static void Reshape(int width, int height)
{
Width = width;
Height = height;
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0, 3.0, 0.0, 2.0, -2.0, 6.0);
glScalef(1.0, 1.0, -1.0); // flip z-axis
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
static void Key(unsigned char key, int x, int y)
{
(void) x;
(void) y;
switch (key) {
case 27:
exit(0);
break;
}
glutPostRedisplay();
}
static void Init(void)
{
int i;
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
piglit_require_fragment_program();
for(i = 0; i < NUM_PROGRAMS; ++i)
FragProg[i] = piglit_compile_program(GL_FRAGMENT_PROGRAM_ARB, ProgramText[i]);
Reshape(Width,Height);
}
int main(int argc, char *argv[])
{
glutInit(&argc, argv);
if (argc == 2 && !strcmp(argv[1], "-auto"))
Automatic = 1;
glutInitWindowPosition(0, 0);
glutInitWindowSize(Width, Height);
glutInitDisplayMode(GLUT_RGBA | GLUT_ALPHA | GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow(argv[0]);
glutReshapeFunc(Reshape);
glutKeyboardFunc(Key);
glutDisplayFunc(Redisplay);
Init();
glutMainLoop();
return 0;
}
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