Screen space vs. world space P0(x,y,z) V0(x,y) V1(x,y) P1(x,y,z) Interpolation in Screen Space P t V0 t V1 V0 V0(x,y)
x0 x1 x0 P t t z0 z1 z0 V1(x,y) z=1 P1(x,y,z) P0(x,y,z) Interpolation in World Space
P t P0 s P1 P0 V0(x,y) x0 x1 x0 P t s z0 z1 z0 V1(x,y) z=1 P1(x,y,z) P0(x,y,z)
Comparing the two P t V0 t V1 V0 P t P0 s P1 P0
x0 x1 x0 P t t z0 z1 z0 x x x P t 0 s 1 0 z0 z1 z0 What do we need to interpolate in screen space now? What happens if we dont have Z? What have we discussed that doesnt
doesn have Z? Perspectively Correct Z http://graphics.lcs.mit.edu/ classes/6.837/F98/Lecture21/ Slide14.html x0 x1 x0 x0 s( x1 x0 ) t z0 z1 z0 z0 s( z1 z0 ) tz0 s z1 t ( z0 z1 ) u u0 s(u1 u0 )
v v0 s( v1 v0 ) Other solutions Cost of screen space interpolation now? Increase # of triangles x0 x1 x0 x0 s( x1 x0 ) t z0 z1 z0 z0 s( z1 z0 )
tz0 s z1 t ( z0 z1 ) u u0 s(u1 u0 ) v v0 s( v1 v0 ) Linear Interpolation is wrong?
Gouraud is wrong, but why does it look okay? Q: Why does Texture mapping not look right even though we are doing the same thing? A: All about the slope of the interpolation and the gradualness or abruptness of the change Transparencies
We will revisit this later, but we can use the alpha channel to stencil out textures. Thus per pixel, set alpha = 1 or alpha = 0. Where alpha = 0, Lets Look at some games Pick a favorite game from the class
Which of the following adaptations would probably help a plant survive in the desert? ... Western gorilla. 121. Which animal most likely has the characteristics described below:1. Feet covered in hair for protection against extreme temperatures2.
In addition to thermal layers of thickness δ. T, f, the sidewalls develop viscous (velocity) wall jets. The thickness of these jets δ v from the momentum balance (5.7) for the region of thickness x ∼ δ v outside the...
Cómo moverse en Gmail. Inbox Sent Mail Drafts Compose. Enlace de vido para -Gmail: cómo bloquear mensajes. Pulse en el mensaje para abrir y leer. Your in-box is the folder where all your mail arrives. Click on a message to...
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As a provider accredited by ACCME, the University of Nebraska Medical Center, Center for Continuing Education, the University of Nebraska Medical Center, College of Nursing Continuing Nursing Education, and the American Nurses Credentialing Center's Commission on Accreditation must ensure balance,...
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