static void Display( void )
{
/* together with the construction of dudv map, do fixed translation
in y direction (up), some cosine deformation in x and more
deformation in y dir */
GLfloat bumpMatrix[4] = {0.1, 0.0, 0.2, 0.1};
glClearColor(0.2, 0.2, 0.8, 0);
glClear( GL_COLOR_BUFFER_BIT );
glPushMatrix();
/* this is the base map */
glActiveTexture( GL_TEXTURE0 );
glEnable( GL_TEXTURE_2D );
glBindTexture( GL_TEXTURE_2D, 1 );
glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE );
glTexEnvf( GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE );
glTexEnvf( GL_TEXTURE_ENV, GL_SOURCE0_RGB, GL_TEXTURE );
/* bump map */
glActiveTexture( GL_TEXTURE1 );
glEnable( GL_TEXTURE_2D );
glBindTexture( GL_TEXTURE_2D, 2 );
glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE );
glTexEnvf( GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_BUMP_ENVMAP_ATI );
glTexEnvf( GL_TEXTURE_ENV, GL_BUMP_TARGET_ATI, GL_TEXTURE0);
glTexBumpParameterfvATI(GL_BUMP_ROT_MATRIX_ATI, bumpMatrix);
glCallList(1);
glPopMatrix();
glutSwapBuffers();
}
enum piglit_result
piglit_display(void)
{
GLboolean pass = GL_TRUE;
GLuint tex, bump;
int x, y;
float bump_matrix[4] = {1.0, 0.0, 0.0, 1.0};
float red[4] = {1.0, 0.0, 0.0, 1.0};
float green[4] = {0.0, 1.0, 0.0, 1.0};
float blue[4] = {0.0, 0.0, 1.0, 1.0};
float white[4] = {1.0, 1.0, 1.0, 1.0};
float bumpdata[TEXSIZE][TEXSIZE][2];
/* First: the base texture. */
tex = piglit_rgbw_texture(GL_RGBA, TEXSIZE, TEXSIZE,
GL_FALSE, GL_FALSE, GL_UNSIGNED_NORMALIZED);
glActiveTexture(tex_unit);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, tex);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_RGB, GL_TEXTURE);
/* Second: the bumpmap. */
glGenTextures(1, &bump);
glActiveTexture(bump_unit);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, bump);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_BUMP_ENVMAP_ATI);
glTexEnvf(GL_TEXTURE_ENV, GL_BUMP_TARGET_ATI, tex_unit);
/* The bump map we use is going to end up rotating texels CCW. */
for (y = 0; y < TEXSIZE; y++) {
for (x = 0; x < TEXSIZE; x++) {
if (y < TEXSIZE / 2) {
if (x < TEXSIZE / 2) {
bumpdata[y][x][0] = 0.0;
bumpdata[y][x][1] = 0.5;
} else {
bumpdata[y][x][0] = -0.5;
bumpdata[y][x][1] = 0.0;
}
} else {
if (x < TEXSIZE / 2) {
bumpdata[y][x][0] = 0.5;
bumpdata[y][x][1] = 0.0;
} else {
bumpdata[y][x][0] = 0.0;
bumpdata[y][x][1] = -0.5;
}
}
}
}
glTexImage2D(GL_TEXTURE_2D, 0, GL_DU8DV8_ATI, TEXSIZE, TEXSIZE, 0,
GL_DUDV_ATI, GL_FLOAT, bumpdata);
glTexBumpParameterfvATI(GL_BUMP_ROT_MATRIX_ATI, bump_matrix);
draw_rect_multitex(-1, -1, 2, 2,
0, 0, 1, 1);
pass = pass && piglit_probe_rect_rgba(0,
0,
piglit_width / 2,
piglit_height / 2,
blue);
pass = pass && piglit_probe_rect_rgba(piglit_width / 2,
0,
piglit_width / 2,
piglit_height / 2,
red);
pass = pass && piglit_probe_rect_rgba(0,
piglit_height / 2,
piglit_width / 2,
piglit_height / 2,
white);
pass = pass && piglit_probe_rect_rgba(piglit_width / 2,
piglit_height / 2,
piglit_width / 2,
piglit_height / 2,
green);
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
