Joshua Leung
72a360827b
This commit restores support for Motion Path drawing in 2.8 (as it wasn't ported over to the new draw engines earlier, and the existing space_view3d/drawanimviz.c code was removed during the Blender Internal removal). Notes: * Motion Paths are now implemented as an overlay (enabled by default). Therefore, you can turn all of them on/off from the "Overlays" popover * By and large, we have kept the same draw style as was used in 2.7 Further changes can happen later following further design work. * One change from 2.7 is that thicker lines are used by default (2px vs 1px) Todo's: * There are some bad-level calls introduced here (i.e. the actgroup_to_keylist() stuff). These were introduced to optimise drawing performance (by avoiding full keyframes -> keylist conversion step on each drawcall). Instead, this has been moved to the calculation step (in blenkernel). Soon, there will be some cleanups/improvements with those functions, so until then, we'll keep the bad level calls. Credits: * Clément Foucault (fclem) - Draw Engine magic + Shader Conversion/Optimisation * Joshua Leung (Aligorith) - COW fixes, UI integration, etc. Revision History: See "tmp-b28-motionpath_drawing" branch (rBa12ab5b2ef49ccacae091ccb54d72de0d63f990d)
48 lines
1.2 KiB
GLSL
48 lines
1.2 KiB
GLSL
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uniform mat4 ViewProjectionMatrix;
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uniform int pointSize = 2;
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uniform int frameCurrent;
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uniform int cacheStart;
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uniform bool showKeyFrames = true;
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uniform bool useCustomColor;
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uniform vec3 customColor;
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in vec3 pos;
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in int flag;
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#define MOTIONPATH_VERT_SEL (1 << 0)
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#define MOTIONPATH_VERT_KEY (1 << 1)
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out vec4 finalColor;
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void main()
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{
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gl_Position = ViewProjectionMatrix * vec4(pos, 1.0);
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gl_PointSize = float(pointSize + 2);
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int frame = gl_VertexID + cacheStart;
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finalColor = (useCustomColor) ? vec4(customColor, 1.0) : vec4(1.0);
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/* Bias to reduce z fighting with the path */
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gl_Position.z -= 1e-4;
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if (showKeyFrames) {
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if ((flag & MOTIONPATH_VERT_KEY) != 0) {
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gl_PointSize = float(pointSize + 5);
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finalColor = colorVertexSelect;
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/* Bias more to get these on top of regular points */
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gl_Position.z -= 1e-4;
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}
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/* Draw big green dot where the current frame is.
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* NOTE: this is only done when keyframes are shown, since this adds similar types of clutter
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*/
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if (frame == frameCurrent) {
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gl_PointSize = float(pointSize + 8);
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finalColor = colorCurrentFrame;
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/* Bias more to get these on top of keyframes */
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gl_Position.z -= 1e-4;
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}
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}
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}
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