diff options
Diffstat (limited to 'source/blender/gpu/shaders/gpu_shader_keyframe_diamond_vert.glsl')
-rw-r--r-- | source/blender/gpu/shaders/gpu_shader_keyframe_diamond_vert.glsl | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/gpu_shader_keyframe_diamond_vert.glsl b/source/blender/gpu/shaders/gpu_shader_keyframe_diamond_vert.glsl new file mode 100644 index 00000000000..c49832bf9b4 --- /dev/null +++ b/source/blender/gpu/shaders/gpu_shader_keyframe_diamond_vert.glsl @@ -0,0 +1,34 @@ + +uniform mat4 ModelViewProjectionMatrix; + +const float pixel_fudge = sqrt(2.0); +const float outline_width = 1.15 * pixel_fudge; + +in vec2 pos; +in float size; +in vec4 color; +in vec4 outlineColor; +out vec4 finalColor; +out vec4 finalOutlineColor; +out vec4 radii; + +void main() { + gl_Position = ModelViewProjectionMatrix * vec4(pos, 0.0, 1.0); + + // pass through unchanged + gl_PointSize = size + pixel_fudge; // 0.5 pixel_fudge on either side + finalColor = color; + finalOutlineColor = outlineColor; + + // calculate concentric radii in pixels + float radius = 0.5 * gl_PointSize; + + // start at the outside and progress toward the center + radii[0] = radius; + radii[1] = radius - pixel_fudge; + radii[2] = radius - outline_width; + radii[3] = radius - outline_width - pixel_fudge; + + // convert to PointCoord units + radii /= size; +} |