diff options
Diffstat (limited to 'src/effects/shaders/+glslcore/radialgradient.vert')
-rw-r--r-- | src/effects/shaders/+glslcore/radialgradient.vert | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/effects/shaders/+glslcore/radialgradient.vert b/src/effects/shaders/+glslcore/radialgradient.vert new file mode 100644 index 0000000..8179122 --- /dev/null +++ b/src/effects/shaders/+glslcore/radialgradient.vert @@ -0,0 +1,31 @@ +#version 150 core +in vec4 qt_Vertex; +in vec2 qt_MultiTexCoord0; +uniform mat4 qt_Matrix; +uniform vec2 matrixData; +uniform float horizontalRatio; +uniform float verticalRatio; +uniform vec2 center; +out vec2 qt_TexCoord0; +out vec2 qt_TexCoord1; +out vec2 centerPoint; + +void main() { + vec2 ratio = vec2(horizontalRatio, verticalRatio); + + // Rotation matrix + mat2 rot = mat2(matrixData.y, -matrixData.x, + matrixData.x, matrixData.y); + + qt_TexCoord0 = qt_MultiTexCoord0; + + qt_TexCoord1 = qt_MultiTexCoord0; + qt_TexCoord1 -= center; + qt_TexCoord1 *= rot; + qt_TexCoord1 += center; + qt_TexCoord1 *= ratio; + + centerPoint = center * ratio; + + gl_Position = qt_Matrix * qt_Vertex; +} |