diff options
Diffstat (limited to 'data/shaders/sprite-vertex.glsl')
| -rw-r--r-- | data/shaders/sprite-vertex.glsl | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/data/shaders/sprite-vertex.glsl b/data/shaders/sprite-vertex.glsl new file mode 100644 index 0000000..d6efd3f --- /dev/null +++ b/data/shaders/sprite-vertex.glsl @@ -0,0 +1,26 @@ +#version 120 + +uniform mat4 projection; +uniform vec2 position; +uniform vec2 anchor; +uniform vec2 scale; +uniform float rotation; + +void main(void) { + mat4 rotationMatrix = mat4(cos(rotation), -sin(rotation), 0.0, 0.0, + sin(rotation), cos(rotation), 0.0, 0.0, + 0.0, 0.0, 1.0, 0.0, + 0.0, 0.0, 0.0, 1.0); + mat4 translationMatrix = mat4(1.0, 0.0, 0.0, position.x - anchor.x, + 0.0, 1.0, 0.0, position.y - anchor.y, + 0.0, 0.0, 1.0, 0.0, + 0.0, 0.0, 0.0, 1.0); + mat4 scaleMatrix = mat4(scale.x, 0.0, 0.0, 0.0, + 0.0, scale.y, 0.0, 0.0, + 0.0, 0.0, 1.0, 0.0, + 0.0, 0.0, 0.0, 1.0); + + gl_Position = projection * (gl_Vertex * scaleMatrix * + rotationMatrix * translationMatrix); + gl_TexCoord[0] = gl_MultiTexCoord0; +} |