diff options
| author | Kahrl <kahrl@gmx.net> | 2012-03-19 02:59:12 +0100 |
|---|---|---|
| committer | Perttu Ahola <celeron55@gmail.com> | 2012-12-02 00:46:18 +0200 |
| commit | 22e6fb7056dcc888e9ccf768fefb6c073077a3b5 (patch) | |
| tree | f85461ee0449602fa12dde14b97c5c96cf813133 /client/shaders/the_darkness_of_light/opengl_vertex.asm | |
| parent | e3258b78e263c3f95007e1fbc92fcc3a51646f69 (diff) | |
| download | minetest-22e6fb7056dcc888e9ccf768fefb6c073077a3b5.tar.gz minetest-22e6fb7056dcc888e9ccf768fefb6c073077a3b5.tar.bz2 minetest-22e6fb7056dcc888e9ccf768fefb6c073077a3b5.zip | |
ShaderSource and silly example shaders
Diffstat (limited to 'client/shaders/the_darkness_of_light/opengl_vertex.asm')
| -rw-r--r-- | client/shaders/the_darkness_of_light/opengl_vertex.asm | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/client/shaders/the_darkness_of_light/opengl_vertex.asm b/client/shaders/the_darkness_of_light/opengl_vertex.asm new file mode 100644 index 000000000..adfee130e --- /dev/null +++ b/client/shaders/the_darkness_of_light/opengl_vertex.asm @@ -0,0 +1,38 @@ +!!ARBvp1.0
+
+#input
+ATTRIB InPos = vertex.position;
+ATTRIB InColor = vertex.color;
+ATTRIB InNormal = vertex.normal;
+ATTRIB InTexCoord = vertex.texcoord;
+
+#output
+OUTPUT OutPos = result.position;
+OUTPUT OutColor = result.color;
+OUTPUT OutTexCoord = result.texcoord;
+
+PARAM MVP[4] = { state.matrix.mvp }; # modelViewProjection matrix.
+TEMP Temp;
+TEMP TempColor;
+TEMP TempCompare;
+
+#transform position to clip space
+DP4 Temp.x, MVP[0], InPos;
+DP4 Temp.y, MVP[1], InPos;
+DP4 Temp.z, MVP[2], InPos;
+DP4 Temp.w, MVP[3], InPos;
+
+# check if normal.y > 0.5
+SLT TempCompare, InNormal, {0.5,0.5,0.5,0.5};
+MUL TempCompare.z, TempCompare.y, 0.5;
+SUB TempCompare.x, 1.0, TempCompare.z;
+MOV TempCompare.y, TempCompare.x;
+MOV TempCompare.z, TempCompare.x;
+
+# calculate light color
+MUL OutColor, InColor, TempCompare;
+MOV OutColor.w, 1.0; # we want alpha to be always 1
+MOV OutTexCoord, InTexCoord; # store texture coordinate
+MOV OutPos, Temp;
+
+END
|