diff options
Diffstat (limited to 'source/blender/gpu/shaders/gpu_shader_icon_vert.glsl')
-rw-r--r-- | source/blender/gpu/shaders/gpu_shader_icon_vert.glsl | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/gpu_shader_icon_vert.glsl b/source/blender/gpu/shaders/gpu_shader_icon_vert.glsl new file mode 100644 index 00000000000..25f64bfe0b6 --- /dev/null +++ b/source/blender/gpu/shaders/gpu_shader_icon_vert.glsl @@ -0,0 +1,37 @@ +/** + * Simple shader that just draw one icon at the specified location + * does not need any vertex input (producing less call to immBegin/End) + */ + +void main() +{ + vec2 uv; + vec2 co; + + if (gl_VertexID == 0) { + co = rect_geom.xw; + uv = rect_icon.xw; + mask_coord_interp = vec2(0, 1); + } + else if (gl_VertexID == 1) { + co = rect_geom.xy; + uv = rect_icon.xy; + mask_coord_interp = vec2(0, 0); + } + else if (gl_VertexID == 2) { + co = rect_geom.zw; + uv = rect_icon.zw; + mask_coord_interp = vec2(1, 1); + } + else { + co = rect_geom.zy; + uv = rect_icon.zy; + mask_coord_interp = vec2(1, 0); + } + + /* Put origin in lower right corner. */ + mask_coord_interp.x -= 1; + + gl_Position = ModelViewProjectionMatrix * vec4(co, 0.0f, 1.0f); + texCoord_interp = uv; +} |