void FGLInterface::RenderTextureView (FCanvasTexture *tex, AActor *Viewpoint, int FOV)
{
FMaterial * gltex = FMaterial::ValidateTexture(tex, false);
int width = gltex->TextureWidth();
int height = gltex->TextureHeight();
gl_fixedcolormap=CM_DEFAULT;
gl_RenderState.SetFixedColormap(CM_DEFAULT);
if (gl.legacyMode)
{
// In legacy mode, fail if the requested texture is too large.
if (gltex->GetWidth() > screen->GetWidth() || gltex->GetHeight() > screen->GetHeight()) return;
glFlush();
}
else
{
GLRenderer->StartOffscreen();
gltex->BindToFrameBuffer();
}
GL_IRECT bounds;
bounds.left=bounds.top=0;
bounds.width=FHardwareTexture::GetTexDimension(gltex->GetWidth());
bounds.height=FHardwareTexture::GetTexDimension(gltex->GetHeight());
GLRenderer->RenderViewpoint(Viewpoint, &bounds, FOV, (float)width/height, (float)width/height, false, false);
if (gl.legacyMode)
{
glFlush();
gl_RenderState.SetMaterial(gltex, 0, 0, -1, false);
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, bounds.width, bounds.height);
}
else
{
GLRenderer->EndOffscreen();
}
tex->SetUpdated();
camtexcount++;
}
