59 lines
1.3 KiB
Plaintext
59 lines
1.3 KiB
Plaintext
|
#version 450 core
|
||
|
|
|
||
|
|
#extension GL_EXT_scalar_block_layout : require
|
||
|
|
#extension GL_EXT_shader_8bit_storage : require
|
||
|
|
|
||
|
|
layout (local_size_x = 16, local_size_y = 1, local_size_z = 1) in;
|
||
|
|
|
||
|
|
layout (std430, set = 0, binding = 0) uniform index_buffer_pattern
|
||
|
|
{
|
||
|
|
int ibp_pattern[8];
|
||
|
|
int ibp_primitive_vertices;
|
||
|
|
int ibp_primitive_vertices_out;
|
||
|
|
int ibp_index_size;
|
||
|
|
int ibp_index_size_out;
|
||
|
|
int ibp_base_index;
|
||
|
|
int ibp_index_stride;
|
||
|
|
int src_offset;
|
||
|
|
int total_primitives;
|
||
|
|
};
|
||
|
|
|
||
|
|
layout (std430, set = 1, binding = 1) buffer in_s
|
||
|
|
{
|
||
|
|
uint8_t[] in_data;
|
||
|
|
};
|
||
|
|
|
||
|
|
layout (std430, set = 1, binding = 2) buffer out_s
|
||
|
|
{
|
||
|
|
uint8_t[] out_data;
|
||
|
|
};
|
||
|
|
|
||
|
|
void main()
|
||
|
|
{
|
||
|
|
int primitiveIndex = int(gl_GlobalInvocationID.x);
|
||
|
|
if (primitiveIndex >= total_primitives)
|
||
|
|
{
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
int inOffset = primitiveIndex * ibp_index_stride;
|
||
|
|
int outOffset = primitiveIndex * ibp_primitive_vertices_out;
|
||
|
|
|
||
|
|
for (int i = 0; i < ibp_primitive_vertices_out; i++)
|
||
|
|
{
|
||
|
|
int j;
|
||
|
|
int io = max(0, inOffset + ibp_base_index + ibp_pattern[i]) * ibp_index_size;
|
||
|
|
int oo = (outOffset + i) * ibp_index_size_out;
|
||
|
|
|
||
|
|
for (j = 0; j < ibp_index_size; j++)
|
||
|
|
{
|
||
|
|
out_data[oo + j] = in_data[src_offset + io + j];
|
||
|
|
}
|
||
|
|
|
||
|
|
for (; j < ibp_index_size_out; j++)
|
||
|
|
{
|
||
|
|
out_data[oo + j] = uint8_t(0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|