static GLboolean
test_simple_texture(int tex, int bias)
{
GLboolean pass = GL_TRUE;
int level;
glBindTexture(GL_TEXTURE_2D, Textures[tex]);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, bias);
for(level = 0; level < 3; ++level) {
float scale = scale_for_miplevel(bias, level);
glPushMatrix();
glScalef(SquareSize, SquareSize, 1.0);
glTranslatef(level, tex, 0.0);
glBegin(GL_QUADS);
glTexCoord2f(0.0, 0.0); glVertex2f(0, 0);
glTexCoord2f(scale, 0.0); glVertex2f(1, 0);
glTexCoord2f(scale, scale); glVertex2f(1, 1);
glTexCoord2f(0.0, scale); glVertex2f(0, 1);
glEnd();
glPopMatrix();
pass = probe_cell("test_simple", level, tex,
TextureData[tex][level]) && pass;
}
return pass;
}
static GLboolean
test_multitex_combo(int bias1, int level1, int bias2, int level2)
{
float scale1 = scale_for_miplevel(bias1, level1);
float scale2 = scale_for_miplevel(bias2, level2);
GLfloat expected[3];
int i;
for(i = 0; i < 3; ++i)
expected[i] = TextureData[0][level1][i] + TextureData[1][level2][i];
glPushMatrix();
glScalef(SquareSize, SquareSize, 1.0);
glTranslatef(level1, level2, 0.0);
glBegin(GL_QUADS);
glMultiTexCoord2f(GL_TEXTURE0, 0.0, 0.0);
glMultiTexCoord2f(GL_TEXTURE1, 0.0, 0.0);
glVertex2f(0, 0);
glMultiTexCoord2f(GL_TEXTURE0, scale1, 0.0);
glMultiTexCoord2f(GL_TEXTURE1, scale2, 0.0);
glVertex2f(1, 0);
glMultiTexCoord2f(GL_TEXTURE0, scale1, scale1);
glMultiTexCoord2f(GL_TEXTURE1, scale2, scale2);
glVertex2f(1, 1);
glMultiTexCoord2f(GL_TEXTURE0, 0.0, scale1);
glMultiTexCoord2f(GL_TEXTURE1, 0.0, scale2);
glVertex2f(0, 1);
glEnd();
glPopMatrix();
return probe_cell("multitex", level1, level2, expected);
}
/**
* Sanity test whether the texture is rendered correctly at all.
*/
static void test_sanity(void)
{
int x, y;
glClearColor(0.5, 0.5, 0.5, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_QUADS);
glTexCoord2f(0, 0);
glVertex2f(0, 0);
glTexCoord2f(1, 0);
glVertex2f(1, 0);
glTexCoord2f(1, 1);
glVertex2f(1, 1);
glTexCoord2f(0, 1);
glVertex2f(0, 1);
glEnd();
for(y = 0; y < 4; ++y) {
for(x = 0; x < 4; ++x)
probe_cell("test_sanity", x, y, TextureData[y][x]);
}
piglit_present_results();
}
static void do_test_texgen_eye(const char* testname)
{
static GLfloat sPlane1[4] = { 1.0, 0.0, 0.0, 0.25 };
static GLfloat sPlane2[4] = { 1.0, 0.0, 0.0, -0.25 };
static GLfloat sPlane3[4] = { -1.0, 0.0, 0.0, 1.25 };
int x, y;
glClearColor(0.5, 0.5, 0.5, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
// Note: Modelview matrix is identity
glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
glTexGenfv(GL_S, GL_EYE_PLANE, sPlane1);
glEnable(GL_TEXTURE_GEN_S);
// Draw lower left quad
glBegin(GL_QUADS);
glTexCoord2f(0, 0.25); glVertex2f(0.0, 0.0);
glTexCoord2f(0, 0.25); glVertex2f(0.5, 0.0);
glTexCoord2f(0, 0.75); glVertex2f(0.5, 0.5);
glTexCoord2f(0, 0.75); glVertex2f(0.0, 0.5);
glEnd();
// Draw lower right quad
glTexGenfv(GL_S, GL_EYE_PLANE, sPlane2);
glPushMatrix();
glTranslatef(0.5, -0.5, 0.0);
glScalef(2.0, 1.0, 1.0);
glBegin(GL_QUADS);
glTexCoord2f(0, 0.25); glVertex2f(0.0, 0.5);
glTexCoord2f(0, 0.25); glVertex2f(0.25, 0.5);
glTexCoord2f(0, 0.75); glVertex2f(0.25, 1.0);
glTexCoord2f(0, 0.75); glVertex2f(0.0, 1.0);
glEnd();
glPopMatrix();
// Draw upper left quad
glPushMatrix();
glTranslatef(1.0, 0.5, 0.0);
glScalef(-1.0, 1.0, 1.0);
glTexGenfv(GL_S, GL_EYE_PLANE, sPlane3);
glBegin(GL_QUADS);
glTexCoord2f(0, 0.25); glVertex2f(1.0, 0.0);
glTexCoord2f(0, 0.25); glVertex2f(0.5, 0.0);
glTexCoord2f(0, 0.75); glVertex2f(0.5, 0.5);
glTexCoord2f(0, 0.75); glVertex2f(1.0, 0.5);
glEnd();
glPopMatrix();
glDisable(GL_TEXTURE_GEN_S);
for(y = 0; y < 2; ++y) {
for(x = 0; x < 2; ++x)
probe_cell(testname, x, y, TextureData[y+1][x+1]);
}
piglit_present_results();
}