diff options
Diffstat (limited to 'source/blender/draw/modes/shaders/armature_stick_vert.glsl')
| -rw-r--r-- | source/blender/draw/modes/shaders/armature_stick_vert.glsl | 99 |
1 files changed, 51 insertions, 48 deletions
diff --git a/source/blender/draw/modes/shaders/armature_stick_vert.glsl b/source/blender/draw/modes/shaders/armature_stick_vert.glsl index 3f1aef47dce..9e5a3d76c0d 100644 --- a/source/blender/draw/modes/shaders/armature_stick_vert.glsl +++ b/source/blender/draw/modes/shaders/armature_stick_vert.glsl @@ -14,9 +14,9 @@ in uint flag; #define COL_TAIL 4u /* (1 << 2) */ #define COL_BONE 8u /* (1 << 3) */ -#define POS_HEAD 16u /* (1 << 4) */ +#define POS_HEAD 16u /* (1 << 4) */ #define POS_TAIL 32u /* (1 << 5) */ /* UNUSED */ -#define POS_BONE 64u /* (1 << 6) */ +#define POS_BONE 64u /* (1 << 6) */ /* ---- Per instance Attrs ---- */ in vec3 boneStart; @@ -39,57 +39,60 @@ uniform float stickSize = 5.0; /* might be dependent on DPI setting in the futur /* project to screen space */ vec2 proj(vec4 pos) { - return (0.5 * (pos.xy / pos.w) + 0.5) * viewportSize; + return (0.5 * (pos.xy / pos.w) + 0.5) * viewportSize; } void main() { - finalInnerColor = ((flag & COL_HEAD) != 0u) ? headColor : tailColor; - finalInnerColor = ((flag & COL_BONE) != 0u) ? boneColor : finalInnerColor; - finalWireColor = (do_wire) ? wireColor : finalInnerColor; - /* Make the color */ - colorFac = ((flag & COL_WIRE) == 0u) ? ((flag & COL_BONE) != 0u) ? 1.0 : 2.0 : 0.0; - - vec4 boneStart_4d = vec4(boneStart, 1.0); - vec4 boneEnd_4d = vec4(boneEnd, 1.0); - vec4 v0 = ViewMatrix * boneStart_4d; - vec4 v1 = ViewMatrix * boneEnd_4d; - - /* Clip the bone to the camera origin plane (not the clip plane) - * to avoid glitches if one end is behind the camera origin (in persp). */ - float clip_dist = (ProjectionMatrix[3][3] == 0.0) ? -1e-7 : 1e20; /* hardcoded, -1e-8 is giving gliches. */ - vec3 bvec = v1.xyz - v0.xyz; - vec3 clip_pt = v0.xyz + bvec * ((v0.z - clip_dist) / -bvec.z); - if (v0.z > clip_dist) { - v0.xyz = clip_pt; - } - else if (v1.z > clip_dist) { - v1.xyz = clip_pt; - } - - vec4 p0 = ProjectionMatrix * v0; - vec4 p1 = ProjectionMatrix * v1; - - float h = (is_head) ? p0.w : p1.w; - - vec2 x_screen_vec = normalize(proj(p1) - proj(p0) + 1e-8); - vec2 y_screen_vec = vec2(x_screen_vec.y, -x_screen_vec.x); - - /* 2D screen aligned pos at the point */ - vec2 vpos = pos.x * x_screen_vec + pos.y * y_screen_vec; - vpos *= (ProjectionMatrix[3][3] == 0.0) ? h : 1.0; - vpos *= (do_wire) ? 1.0 : 0.5; - - if (finalInnerColor.a > 0.0) { - gl_Position = (is_head) ? p0 : p1; - gl_Position.xy += stickSize * (vpos / viewportSize); - gl_Position.z += (is_bone) ? 0.0 : 1e-6; /* Avoid Z fighting of head/tails. */ + finalInnerColor = ((flag & COL_HEAD) != 0u) ? headColor : tailColor; + finalInnerColor = ((flag & COL_BONE) != 0u) ? boneColor : finalInnerColor; + finalWireColor = (do_wire) ? wireColor : finalInnerColor; + /* Make the color */ + colorFac = ((flag & COL_WIRE) == 0u) ? ((flag & COL_BONE) != 0u) ? 1.0 : 2.0 : 0.0; + + vec4 boneStart_4d = vec4(boneStart, 1.0); + vec4 boneEnd_4d = vec4(boneEnd, 1.0); + vec4 v0 = ViewMatrix * boneStart_4d; + vec4 v1 = ViewMatrix * boneEnd_4d; + + /* Clip the bone to the camera origin plane (not the clip plane) + * to avoid glitches if one end is behind the camera origin (in persp). */ + float clip_dist = (ProjectionMatrix[3][3] == 0.0) ? + -1e-7 : + 1e20; /* hardcoded, -1e-8 is giving gliches. */ + vec3 bvec = v1.xyz - v0.xyz; + vec3 clip_pt = v0.xyz + bvec * ((v0.z - clip_dist) / -bvec.z); + if (v0.z > clip_dist) { + v0.xyz = clip_pt; + } + else if (v1.z > clip_dist) { + v1.xyz = clip_pt; + } + + vec4 p0 = ProjectionMatrix * v0; + vec4 p1 = ProjectionMatrix * v1; + + float h = (is_head) ? p0.w : p1.w; + + vec2 x_screen_vec = normalize(proj(p1) - proj(p0) + 1e-8); + vec2 y_screen_vec = vec2(x_screen_vec.y, -x_screen_vec.x); + + /* 2D screen aligned pos at the point */ + vec2 vpos = pos.x * x_screen_vec + pos.y * y_screen_vec; + vpos *= (ProjectionMatrix[3][3] == 0.0) ? h : 1.0; + vpos *= (do_wire) ? 1.0 : 0.5; + + if (finalInnerColor.a > 0.0) { + gl_Position = (is_head) ? p0 : p1; + gl_Position.xy += stickSize * (vpos / viewportSize); + gl_Position.z += (is_bone) ? 0.0 : 1e-6; /* Avoid Z fighting of head/tails. */ #ifdef USE_WORLD_CLIP_PLANES - world_clip_planes_calc_clip_distance((ModelMatrix * (is_head ? boneStart_4d : boneEnd_4d)).xyz); + world_clip_planes_calc_clip_distance( + (ModelMatrix * (is_head ? boneStart_4d : boneEnd_4d)).xyz); #endif - } - else { - gl_Position = vec4(0.0); - } + } + else { + gl_Position = vec4(0.0); + } } |