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| author | Mirrorbot <mirrorbot@cogarr.net> | 2025-12-27 17:53:06 -0600 |
|---|---|---|
| committer | Mirrorbot <mirrorbot@cogarr.net> | 2025-12-27 17:53:06 -0600 |
| commit | 71e94ee161447b84c0eaabf6567f8fa62262cd3e (patch) | |
| tree | 391064cc6173a6fe75069af2fdc1978af12f623e /media/d3d8.vsh | |
| download | irrlicht-master.tar.gz irrlicht-master.tar.bz2 irrlicht-master.zip | |
Diffstat (limited to 'media/d3d8.vsh')
| -rw-r--r-- | media/d3d8.vsh | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/media/d3d8.vsh b/media/d3d8.vsh new file mode 100644 index 0000000..e0c24f7 --- /dev/null +++ b/media/d3d8.vsh @@ -0,0 +1,37 @@ +; part of the Irrlicht Engine Shader example.
+; This Direct3D9 vertex shader will be loaded by the engine.
+; Please note that these example shaders don't do anything really useful.
+; They only demonstrate that shaders can be used in Irrlicht.
+
+vs.1.1
+
+; transpose and transform position to clip space
+mul r0, v0.x, c4
+mad r0, v0.y, c5, r0
+mad r0, v0.z, c6, r0
+add oPos, c7, r0
+
+; transform normal
+dp3 r1.x, v1, c0
+dp3 r1.y, v1, c1
+dp3 r1.z, v1, c2
+
+; renormalize normal
+dp3 r1.w, r1, r1
+rsq r1.w, r1.w
+mul r1, r1, r1.w
+
+; calculate light vector
+m4x4 r6, v0, c10 ; vertex into world position
+add r2, c8, -r6 ; vtxpos - lightpos
+
+; normalize light vector
+dp3 r2.w, r2, r2
+rsq r2.w, r2.w
+mul r2, r2, r2.w
+
+; calculate light color
+dp3 r3, r1, r2 ; dp3 with negative light vector
+lit r5, r3 ; clamp to zero if r3 < 0, r5 has diffuce component in r5.y
+mul oD0, r5.y, c9 ; ouput diffuse color
+mov oT0, v3 ; store texture coordinates
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