Hi,
Enabling water in Scorched3D causes corruption of all textures and I
have tracked it down to interaction between glPopAttrib() and the
attributes GL_TEXTURE_GEN_S & GL_TEXTURE_GEN_T.
I using the latest CVS updates of Xorg, Mesa, and r300_driver.
Simplified code from draw() in WaterMap.cpp:
glPushAttrib(GL_TEXTURE_BIT);
GLState currentState(GLState::TEXTURE_ON | GLState::BLEND_ON);
waterTexture_->draw();
glEnable(GL_TEXTURE_GEN_S);
glEnable(GL_TEXTURE_GEN_T);
glEnable(GL_TEXTURE_GEN_R);
glTexGenf(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
glTexGenf(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
glTexGenf(GL_R, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
// Draw the water
surround_.draw();
drawWater();
glPopAttrib();
If I disable GL_TEXTURE_GEN_S & GL_TEXTURE_GEN_T before glPopAttrib() I
get no texture corruption.
If I remove glPushAttrib() & glPopAttrib() I get no corruption, and of
cause doesn't look right.
Are there an easy way to track GL calls down through the layers?
Rune Petersen
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