Differential D2889 Diff 11446 source/blender/draw/engines/gpencil/shaders/gpencil_edit_point_geom.glsl

Changeset View

Standalone View

				uniform mat4 ModelViewProjectionMatrix;
				uniform vec2 Viewport;

				layout(points) in;
				layout(triangle_strip, max_vertices = 4) out;

				in vec4 finalColor[1];
				in float finalThickness[1];

				out vec4 mColor;
				out vec2 mTexCoord;

				/* project 3d point to 2d on screen space */
				vec2 toScreenSpace(vec4 vertex)
				{
				return vec2(vertex.xy / vertex.w) * Viewport;
				}

				void main(void)
				{
				vec4 P0 = gl_in[0].gl_Position;
				vec2 sp0 = toScreenSpace(P0);

				float size = finalThickness[0];

				/* generate the triangle strip */
				mTexCoord = vec2(0, 1);
				mColor = finalColor[0];
				gl_Position = vec4(vec2(sp0.x - size, sp0.y + size) / Viewport, 0, 1.0);
				EmitVertex();

				mTexCoord = vec2(0, 0);
				mColor = finalColor[0];
				gl_Position = vec4(vec2(sp0.x - size, sp0.y - size) / Viewport, 0, 1.0);
				EmitVertex();

				mTexCoord = vec2(1, 1);
				mColor = finalColor[0];
				gl_Position = vec4(vec2(sp0.x + size, sp0.y + size) / Viewport, 0, 1.0);
				EmitVertex();

				mTexCoord = vec2(1, 0);
				mColor = finalColor[0];
				gl_Position = vec4(vec2(sp0.x + size, sp0.y - size) / Viewport, 0, 1.0);
				EmitVertex();

				EndPrimitive();
				}