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#pragma BLENDER_REQUIRE(common_view_lib.glsl)
/* XXX TODO: fix code duplication. */
struct CubeData {
vec4 position_type;
vec4 attenuation_fac_type;
mat4 influencemat;
mat4 parallaxmat;
};
layout(std140) uniform probe_block
{
CubeData probes_data[MAX_PROBE];
};
uniform float sphere_size;
uniform vec3 screen_vecs[2];
flat out int pid;
out vec2 quadCoord;
const vec2 pos[6] = vec2[6](vec2(-1.0, -1.0),
vec2(1.0, -1.0),
vec2(-1.0, 1.0),
vec2(1.0, -1.0),
vec2(1.0, 1.0),
vec2(-1.0, 1.0));
void main()
{
pid = 1 + (gl_VertexID / 6); /* +1 for the world */
int vert_id = gl_VertexID % 6;
quadCoord = pos[vert_id];
vec3 ws_location = probes_data[pid].position_type.xyz;
vec3 screen_pos = screen_vecs[0] * quadCoord.x + screen_vecs[1] * quadCoord.y;
ws_location += screen_pos * sphere_size;
gl_Position = ViewProjectionMatrix * vec4(ws_location, 1.0);
gl_Position.z += 0.0001; /* Small bias to let the icon draw without zfighting */
}
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