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adding face culling, better varying management and more primitive topologies
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kbz_8
2026-04-27 23:52:00 +02:00
parent 02bb54b841
commit d38cbfac9b
4 changed files with 106 additions and 31 deletions
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src/soft/device/rasterizer.zig
+10 -10
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@@ -37,31 +37,31 @@ fn interpolateVertexOutputs(
const out1 = v1.outputs[location] orelse continue;
const out2 = v2.outputs[location] orelse continue;
if (out0.len == 0) {
inputs[location] = out0;
if (out0.interpolation_type == .flat or out0.blob.len == 0) {
inputs[location] = out0.blob;
continue;
}
const len = @min(out0.len, out1.len, out2.len);
const len = @min(out0.blob.len, out1.blob.len, out2.blob.len);
const input = allocator.alloc(u8, len) catch return VkError.OutOfDeviceMemory;
var byte_index: usize = 0;
while (byte_index + @sizeOf(F32x4) <= len) : (byte_index += @sizeOf(F32x4)) {
const value0 = std.mem.bytesToValue(F32x4, out0[byte_index..]);
const value1 = std.mem.bytesToValue(F32x4, out1[byte_index..]);
const value2 = std.mem.bytesToValue(F32x4, out2[byte_index..]);
const value0 = std.mem.bytesToValue(F32x4, out0.blob[byte_index..]);
const value1 = std.mem.bytesToValue(F32x4, out1.blob[byte_index..]);
const value2 = std.mem.bytesToValue(F32x4, out2.blob[byte_index..]);
writePacked(F32x4, input[byte_index..], interpolateF32x4(value0, value1, value2, b0, b1, b2));
}
while (byte_index + @sizeOf(f32) <= len) : (byte_index += @sizeOf(f32)) {
const value0 = std.mem.bytesToValue(f32, out0[byte_index..]);
const value1 = std.mem.bytesToValue(f32, out1[byte_index..]);
const value2 = std.mem.bytesToValue(f32, out2[byte_index..]);
const value0 = std.mem.bytesToValue(f32, out0.blob[byte_index..]);
const value1 = std.mem.bytesToValue(f32, out1.blob[byte_index..]);
const value2 = std.mem.bytesToValue(f32, out2.blob[byte_index..]);
writePacked(f32, input[byte_index..], (value0 * b0) + (value1 * b1) + (value2 * b2));
}
if (byte_index < len)
@memcpy(input[byte_index..], out0[byte_index..len]);
@memcpy(input[byte_index..], out0.blob[byte_index..len]);
inputs[location] = input;
}