Campbell Barton
0b2d1badec
When the result isn't used, prefer post increment/decrement (already used nearly everywhere in Blender).
118 lines
2.7 KiB
GLSL
118 lines
2.7 KiB
GLSL
|
|
uniform mat4 ProjectionMatrix;
|
|
|
|
uniform int PrimitiveIdBase;
|
|
uniform int osd_active_uv_offset;
|
|
|
|
layout(lines_adjacency) in;
|
|
layout(triangle_strip, max_vertices = 4) out;
|
|
|
|
in block
|
|
{
|
|
VertexData v;
|
|
}
|
|
inpt[];
|
|
|
|
/* compatibility */
|
|
out vec3 varnormal;
|
|
out vec3 varposition;
|
|
|
|
uniform bool osd_flat_shading;
|
|
uniform int osd_fvar_count;
|
|
|
|
#define INTERP_FACE_VARYING_2(result, fvarOffset, tessCoord) \
|
|
{ \
|
|
vec2 v[4]; \
|
|
int primOffset = (gl_PrimitiveID + PrimitiveIdBase) * 4; \
|
|
for (int i = 0; i < 4; i++) { \
|
|
int index = (primOffset + i) * osd_fvar_count + fvarOffset; \
|
|
v[i] = vec2(texelFetch(FVarDataBuffer, index).s, texelFetch(FVarDataBuffer, index + 1).s); \
|
|
} \
|
|
result = mix(mix(v[0], v[1], tessCoord.s), mix(v[3], v[2], tessCoord.s), tessCoord.t); \
|
|
}
|
|
|
|
#define INTERP_FACE_VARYING_ATT_2(result, fvarOffset, tessCoord) \
|
|
{ \
|
|
vec2 tmp; \
|
|
INTERP_FACE_VARYING_2(tmp, fvarOffset, tessCoord); \
|
|
result = vec3(tmp, 0); \
|
|
}
|
|
|
|
uniform samplerBuffer FVarDataBuffer;
|
|
uniform isamplerBuffer FVarDataOffsetBuffer;
|
|
|
|
out block
|
|
{
|
|
VertexData v;
|
|
}
|
|
outpt;
|
|
|
|
void set_mtface_vertex_attrs(vec2 st);
|
|
|
|
void emit_flat(int index, vec3 normal)
|
|
{
|
|
outpt.v.position = inpt[index].v.position;
|
|
outpt.v.normal = normal;
|
|
|
|
/* Compatibility */
|
|
varnormal = outpt.v.normal;
|
|
varposition = outpt.v.position.xyz;
|
|
|
|
/* TODO(sergey): Only uniform subdivisions atm. */
|
|
vec2 quadst[4] = vec2[](vec2(0, 0), vec2(1, 0), vec2(1, 1), vec2(0, 1));
|
|
vec2 st = quadst[index];
|
|
|
|
INTERP_FACE_VARYING_2(outpt.v.uv, osd_active_uv_offset, st);
|
|
|
|
set_mtface_vertex_attrs(st);
|
|
|
|
gl_Position = ProjectionMatrix * inpt[index].v.position;
|
|
EmitVertex();
|
|
}
|
|
|
|
void emit_smooth(int index)
|
|
{
|
|
outpt.v.position = inpt[index].v.position;
|
|
outpt.v.normal = inpt[index].v.normal;
|
|
|
|
/* Compatibility */
|
|
varnormal = outpt.v.normal;
|
|
varposition = outpt.v.position.xyz;
|
|
|
|
/* TODO(sergey): Only uniform subdivisions atm. */
|
|
vec2 quadst[4] = vec2[](vec2(0, 0), vec2(1, 0), vec2(1, 1), vec2(0, 1));
|
|
vec2 st = quadst[index];
|
|
|
|
INTERP_FACE_VARYING_2(outpt.v.uv, osd_active_uv_offset, st);
|
|
|
|
set_mtface_vertex_attrs(st);
|
|
|
|
gl_Position = ProjectionMatrix * inpt[index].v.position;
|
|
EmitVertex();
|
|
}
|
|
|
|
void main()
|
|
{
|
|
gl_PrimitiveID = gl_PrimitiveIDIn;
|
|
|
|
if (osd_flat_shading) {
|
|
vec3 A = (inpt[0].v.position - inpt[1].v.position).xyz;
|
|
vec3 B = (inpt[3].v.position - inpt[1].v.position).xyz;
|
|
vec3 flat_normal = normalize(cross(B, A));
|
|
emit_flat(0, flat_normal);
|
|
emit_flat(1, flat_normal);
|
|
emit_flat(3, flat_normal);
|
|
emit_flat(2, flat_normal);
|
|
}
|
|
else {
|
|
emit_smooth(0);
|
|
emit_smooth(1);
|
|
emit_smooth(3);
|
|
emit_smooth(2);
|
|
}
|
|
EndPrimitive();
|
|
}
|
|
|
|
void set_mtface_vertex_attrs(vec2 st)
|
|
{
|