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)
92 lines
2.3 KiB
GLSL
92 lines
2.3 KiB
GLSL
|
|
uniform mat4 ViewMatrix;
|
|
uniform mat4 ViewProjectionMatrix;
|
|
uniform vec2 viewportSize;
|
|
|
|
uniform int frameCurrent;
|
|
uniform int frameStart;
|
|
uniform int frameEnd;
|
|
uniform int cacheStart;
|
|
uniform bool selected;
|
|
uniform bool useCustomColor;
|
|
uniform vec3 customColor;
|
|
|
|
in vec3 pos;
|
|
|
|
out vec2 ssPos;
|
|
out vec4 finalColor_geom;
|
|
|
|
/* project to screen space */
|
|
vec2 proj(vec4 pos)
|
|
{
|
|
return (0.5 * (pos.xy / pos.w) + 0.5) * viewportSize;
|
|
}
|
|
|
|
#define SET_INTENSITY(A, B, C, min, max) (((1.0 - (float(C - B) / float(C - A))) * (max - min)) + min)
|
|
|
|
void main()
|
|
{
|
|
gl_Position = ViewProjectionMatrix * vec4(pos, 1.0);
|
|
|
|
ssPos = proj(gl_Position);
|
|
|
|
int frame = gl_VertexID + cacheStart;
|
|
|
|
float intensity; /* how faint */
|
|
|
|
vec3 blend_base = (abs(frame - frameCurrent) == 1) ? colorCurrentFrame.rgb : colorBackground.rgb; /* "bleed" cframe color to ease color blending */
|
|
|
|
/* TODO: We might want something more consistent with custom color and standard colors. */
|
|
if (frame < frameCurrent) {
|
|
if (useCustomColor) {
|
|
/* Custom color: previous frames color is darker than current frame */
|
|
finalColor_geom.rgb = customColor * 0.25;
|
|
}
|
|
else {
|
|
/* black - before frameCurrent */
|
|
if (selected) {
|
|
intensity = SET_INTENSITY(frameStart, frame, frameCurrent, 0.25, 0.75);
|
|
}
|
|
else {
|
|
intensity = SET_INTENSITY(frameStart, frame, frameCurrent, 0.68, 0.92);
|
|
}
|
|
finalColor_geom.rgb = mix(colorWire.rgb, blend_base, intensity);
|
|
}
|
|
}
|
|
else if (frame > frameCurrent) {
|
|
if (useCustomColor) {
|
|
/* Custom color: next frames color is equal to user selected color */
|
|
finalColor_geom.rgb = customColor;
|
|
}
|
|
else {
|
|
/* blue - after frameCurrent */
|
|
if (selected) {
|
|
intensity = SET_INTENSITY(frameCurrent, frame, frameEnd, 0.25, 0.75);
|
|
}
|
|
else {
|
|
intensity = SET_INTENSITY(frameCurrent, frame, frameEnd, 0.68, 0.92);
|
|
}
|
|
|
|
finalColor_geom.rgb = mix(colorBonePose.rgb, blend_base, intensity);
|
|
}
|
|
}
|
|
else {
|
|
if (useCustomColor) {
|
|
/* Custom color: current frame color is slightly darker than user selected color */
|
|
finalColor_geom.rgb = customColor * 0.5;
|
|
}
|
|
else {
|
|
/* green - on frameCurrent */
|
|
if (selected) {
|
|
intensity = 0.5f;
|
|
}
|
|
else {
|
|
intensity = 0.99f;
|
|
}
|
|
finalColor_geom.rgb = clamp(mix(colorCurrentFrame.rgb, colorBackground.rgb, intensity) - 0.1, 0.0, 0.1);
|
|
}
|
|
}
|
|
|
|
finalColor_geom.a = 1.0;
|
|
}
|