40 lines
1.1 KiB
Plaintext
40 lines
1.1 KiB
Plaintext
!!ARBvp1.0
|
|
|
|
# Vertex program use for applying shadow textures. 2D texture coordinates
|
|
# are generated from vertex coordinates using the s and t texture planes.
|
|
# A second texture is used as a mask to keep shadows from showing on the
|
|
# wrong side of the object.
|
|
|
|
ATTRIB iPos = vertex.position;
|
|
ATTRIB iTex0 = vertex.texcoord[0];
|
|
PARAM mvp[4] = { state.matrix.mvp };
|
|
PARAM lightDir = program.env[0];
|
|
PARAM texgen_s = program.env[10];
|
|
PARAM texgen_t = program.env[11];
|
|
PARAM halfW = { 0, 0, 0, 0.5 };
|
|
PARAM one = 1;
|
|
OUTPUT oPos = result.position;
|
|
OUTPUT oTex0 = result.texcoord[0];
|
|
OUTPUT oTex1 = result.texcoord[1];
|
|
|
|
TEMP t;
|
|
|
|
# Transform the vertex by the modelview matrix
|
|
DP4 oPos.x, mvp[0], iPos;
|
|
DP4 oPos.y, mvp[1], iPos;
|
|
DP4 oPos.z, mvp[2], iPos;
|
|
DP4 oPos.w, mvp[3], iPos;
|
|
|
|
# Generate texture coordinates
|
|
MOV oTex0, one;
|
|
DP4 oTex0.x, texgen_s, iPos;
|
|
DP4 oTex0.y, texgen_t, iPos;
|
|
|
|
# Generate 1D coordinates for the 'mask' texture
|
|
ADD t, lightDir, halfW;
|
|
DP4 oTex1.x, t, iPos;
|
|
MOV oTex1.y, halfW.x;
|
|
|
|
END
|
|
|