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- from panda3d.core import FrameBufferProperties
- def test_fbquality_depth():
- # We check common framebuffer depth configurations to make sure they
- # are rated predictably with respect to each other when requesting 1 bit.
- # In particular, we make sure that we don't get a 16-bit depth buffer if
- # the driver only gives extra depth in combination with a stencil buffer.
- req = FrameBufferProperties()
- req.depth_bits = 1
- #NB. we need to set rgb_color=True when testing the quality of framebuffer
- # properties, lest it return a quality of 0.
- fb_d16s8 = FrameBufferProperties()
- fb_d16s8.rgb_color = True
- fb_d16s8.depth_bits = 16
- fb_d16s8.stencil_bits = 8
- fb_d24s8 = FrameBufferProperties()
- fb_d24s8.rgb_color = True
- fb_d24s8.depth_bits = 24
- fb_d24s8.stencil_bits = 8
- fb_d32 = FrameBufferProperties()
- fb_d32.rgb_color = True
- fb_d32.depth_bits = 32
- fb_d32s8 = FrameBufferProperties()
- fb_d32s8.rgb_color = True
- fb_d32s8.depth_bits = 32
- fb_d32s8.stencil_bits = 8
- # 16-bit depth is terrible for most applications and should not be chosen.
- assert fb_d16s8.get_quality(req) < fb_d24s8.get_quality(req)
- assert fb_d16s8.get_quality(req) < fb_d32.get_quality(req)
- assert fb_d16s8.get_quality(req) < fb_d32s8.get_quality(req)
- # Getting extra depth should be better than getting an unwanted bitplane.
- assert fb_d32.get_quality(req) > fb_d16s8.get_quality(req)
- assert fb_d32.get_quality(req) > fb_d24s8.get_quality(req)
- # If we're getting stencil anyway, we'll prefer to maximize our depth.
- assert fb_d32s8.get_quality(req) > fb_d24s8.get_quality(req)
- # However, unnecessary stencil bits are still a waste.
- assert fb_d32s8.get_quality(req) < fb_d32.get_quality(req)
- def test_fbquality_rgba64():
- # Make sure that we don't get a 64-bit configuration if we request
- # an unspecific number of color bits. See:
- # https://www.panda3d.org/forums/viewtopic.php?t=20192
- # This issue occurs if we are requesting 1 bit, not if we are requesting
- # a specific amount. There are several ways to do that, so we want to
- # assert that none of them will yield a 64-bit color buffer.
- req_color0 = FrameBufferProperties()
- req_color0.color_bits = 0
- req_color1 = FrameBufferProperties()
- req_color1.color_bits = 1
- req_color0_alpha0 = FrameBufferProperties()
- req_color0_alpha0.color_bits = 0
- req_color0_alpha0.alpha_bits = 0
- req_color1_alpha1 = FrameBufferProperties()
- req_color1_alpha1.color_bits = 1
- req_color1_alpha1.alpha_bits = 1
- req_rgb0 = FrameBufferProperties()
- req_rgb0.set_rgba_bits(0, 0, 0, 0)
- req_rgb1 = FrameBufferProperties()
- req_rgb1.set_rgba_bits(1, 1, 1, 0)
- req_rgb0_alpha0 = FrameBufferProperties()
- req_rgb0_alpha0.set_rgba_bits(0, 0, 0, 0)
- req_rgb1_alpha1 = FrameBufferProperties()
- req_rgb1_alpha1.set_rgba_bits(1, 1, 1, 1)
- fb_rgba8 = FrameBufferProperties()
- fb_rgba8.rgb_color = True
- fb_rgba8.set_rgba_bits(8, 8, 8, 8)
- fb_rgba16 = FrameBufferProperties()
- fb_rgba16.rgb_color = True
- fb_rgba16.set_rgba_bits(16, 16, 16, 16)
- assert fb_rgba8.get_quality(req_color0) > fb_rgba16.get_quality(req_color0)
- assert fb_rgba8.get_quality(req_color1) > fb_rgba16.get_quality(req_color1)
- assert fb_rgba8.get_quality(req_color0_alpha0) > fb_rgba16.get_quality(req_color0_alpha0)
- assert fb_rgba8.get_quality(req_color1_alpha1) > fb_rgba16.get_quality(req_color1_alpha1)
- assert fb_rgba8.get_quality(req_rgb0) > fb_rgba16.get_quality(req_rgb0)
- assert fb_rgba8.get_quality(req_rgb1) > fb_rgba16.get_quality(req_rgb1)
- assert fb_rgba8.get_quality(req_rgb0_alpha0) > fb_rgba16.get_quality(req_rgb0_alpha0)
- assert fb_rgba8.get_quality(req_rgb1_alpha1) > fb_rgba16.get_quality(req_rgb1_alpha1)
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