mirror of
https://github.com/bloeys/nmage.git
synced 2025-12-29 13:28:20 +00:00
Support ubo matrix arrays+fix ubo matrix field bug
This commit is contained in:
bloeys
@ -85,8 +85,21 @@ func (ub *UniformBuffer) addFields(fields []UniformBufferFieldInput) (totalSize
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newField := UniformBufferField{Id: f.Id, Type: f.Type, AlignedOffset: alignedOffset, Count: f.Count}
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ub.Fields = append(ub.Fields, newField)
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// Prepare aligned offset for the next field
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alignedOffset = newField.AlignedOffset + alignmentBoundary*f.Count
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// Prepare aligned offset for the next field.
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//
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// Matrices are treated as an array of column vectors, where each column is a vec4,
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// that's why we have a multiplier depending on how many columns we have when calculating
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// the offset
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multiplier := uint16(1)
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if f.Type == DataTypeMat2 {
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multiplier = 2
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} else if f.Type == DataTypeMat3 {
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multiplier = 3
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} else if f.Type == DataTypeMat4 {
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multiplier = 4
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}
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alignedOffset = newField.AlignedOffset + alignmentBoundary*f.Count*multiplier
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}
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return uint32(alignedOffset)
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@ -241,57 +254,95 @@ func (ub *UniformBuffer) SetStruct(inputStruct any) {
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case DataTypeVec2:
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v2, ok := valField.Interface().(gglm.Vec2)
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typeMatches = ok
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typeMatches = elementType.Name() == "Vec2"
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if typeMatches {
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WriteF32SliceToByteBuf(buf, &writeIndex, v2.Data[:])
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if isArray {
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WriteVec2SliceToByteBufWithAlignment(buf, &writeIndex, 16, valField.Slice(0, valField.Len()).Interface().([]gglm.Vec2))
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} else {
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v2 := valField.Interface().(gglm.Vec2)
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WriteF32SliceToByteBuf(buf, &writeIndex, v2.Data[:])
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}
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}
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case DataTypeVec3:
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v3, ok := valField.Interface().(gglm.Vec3)
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typeMatches = ok
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typeMatches = elementType.Name() == "Vec3"
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if typeMatches {
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WriteF32SliceToByteBuf(buf, &writeIndex, v3.Data[:])
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if isArray {
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WriteVec3SliceToByteBufWithAlignment(buf, &writeIndex, 16, valField.Slice(0, valField.Len()).Interface().([]gglm.Vec3))
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} else {
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v3 := valField.Interface().(gglm.Vec3)
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WriteF32SliceToByteBuf(buf, &writeIndex, v3.Data[:])
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}
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}
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case DataTypeVec4:
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v4, ok := valField.Interface().(gglm.Vec4)
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typeMatches = ok
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typeMatches = elementType.Name() == "Vec4"
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if typeMatches {
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WriteF32SliceToByteBuf(buf, &writeIndex, v4.Data[:])
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if isArray {
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WriteVec4SliceToByteBufWithAlignment(buf, &writeIndex, 16, valField.Slice(0, valField.Len()).Interface().([]gglm.Vec4))
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} else {
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v3 := valField.Interface().(gglm.Vec4)
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WriteF32SliceToByteBuf(buf, &writeIndex, v3.Data[:])
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}
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}
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case DataTypeMat2:
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m2, ok := valField.Interface().(gglm.Mat2)
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typeMatches = ok
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typeMatches = elementType.Name() == "Mat2"
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if typeMatches {
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WriteF32SliceToByteBuf(buf, &writeIndex, m2.Data[0][:])
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WriteF32SliceToByteBuf(buf, &writeIndex, m2.Data[1][:])
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if isArray {
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m2Arr := valField.Interface().([]gglm.Mat2)
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WriteMat2SliceToByteBufWithAlignment(buf, &writeIndex, 16*2, m2Arr)
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} else {
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m := valField.Interface().(gglm.Mat2)
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WriteF32SliceToByteBuf(buf, &writeIndex, m.Data[0][:])
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WriteF32SliceToByteBuf(buf, &writeIndex, m.Data[1][:])
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}
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}
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case DataTypeMat3:
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m3, ok := valField.Interface().(gglm.Mat3)
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typeMatches = ok
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typeMatches = elementType.Name() == "Mat3"
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if typeMatches {
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WriteF32SliceToByteBuf(buf, &writeIndex, m3.Data[0][:])
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WriteF32SliceToByteBuf(buf, &writeIndex, m3.Data[1][:])
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WriteF32SliceToByteBuf(buf, &writeIndex, m3.Data[2][:])
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if isArray {
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m3Arr := valField.Interface().([]gglm.Mat3)
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WriteMat3SliceToByteBufWithAlignment(buf, &writeIndex, 16*3, m3Arr)
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} else {
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m := valField.Interface().(gglm.Mat3)
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WriteF32SliceToByteBuf(buf, &writeIndex, m.Data[0][:])
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WriteF32SliceToByteBuf(buf, &writeIndex, m.Data[1][:])
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WriteF32SliceToByteBuf(buf, &writeIndex, m.Data[2][:])
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}
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}
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case DataTypeMat4:
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m4, ok := valField.Interface().(gglm.Mat4)
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typeMatches = ok
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typeMatches = elementType.Name() == "Mat4"
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if typeMatches {
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WriteF32SliceToByteBuf(buf, &writeIndex, m4.Data[0][:])
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WriteF32SliceToByteBuf(buf, &writeIndex, m4.Data[1][:])
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WriteF32SliceToByteBuf(buf, &writeIndex, m4.Data[2][:])
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WriteF32SliceToByteBuf(buf, &writeIndex, m4.Data[3][:])
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if isArray {
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m4Arr := valField.Interface().([]gglm.Mat4)
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WriteMat4SliceToByteBufWithAlignment(buf, &writeIndex, 16*4, m4Arr)
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} else {
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m := valField.Interface().(gglm.Mat4)
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WriteF32SliceToByteBuf(buf, &writeIndex, m.Data[0][:])
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WriteF32SliceToByteBuf(buf, &writeIndex, m.Data[1][:])
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WriteF32SliceToByteBuf(buf, &writeIndex, m.Data[2][:])
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WriteF32SliceToByteBuf(buf, &writeIndex, m.Data[3][:])
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}
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}
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default:
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@ -387,6 +438,156 @@ func WriteF32SliceToByteBufWithAlignment(buf []byte, startIndex *int, alignmentP
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}
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}
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func WriteVec2SliceToByteBufWithAlignment(buf []byte, startIndex *int, alignmentPerVector int, vals []gglm.Vec2) {
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assert.T(*startIndex+len(vals)*alignmentPerVector <= len(buf), "failed to write slice of gglm.Vec2 with custom alignment=%d to buffer because the buffer doesn't have enough space. Start index=%d, Buffer length=%d, but needs %d bytes free", alignmentPerVector, *startIndex, len(buf), len(vals)*alignmentPerVector)
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for i := 0; i < len(vals); i++ {
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bitsX := math.Float32bits(vals[i].X())
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bitsY := math.Float32bits(vals[i].Y())
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buf[*startIndex] = byte(bitsX)
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buf[*startIndex+1] = byte(bitsX >> 8)
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buf[*startIndex+2] = byte(bitsX >> 16)
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buf[*startIndex+3] = byte(bitsX >> 24)
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buf[*startIndex+4] = byte(bitsY)
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buf[*startIndex+5] = byte(bitsY >> 8)
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buf[*startIndex+6] = byte(bitsY >> 16)
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buf[*startIndex+7] = byte(bitsY >> 24)
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*startIndex += alignmentPerVector
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}
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}
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func WriteVec3SliceToByteBufWithAlignment(buf []byte, startIndex *int, alignmentPerVector int, vals []gglm.Vec3) {
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assert.T(*startIndex+len(vals)*alignmentPerVector <= len(buf), "failed to write slice of gglm.Vec3 with custom alignment=%d to buffer because the buffer doesn't have enough space. Start index=%d, Buffer length=%d, but needs %d bytes free", alignmentPerVector, *startIndex, len(buf), len(vals)*alignmentPerVector)
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for i := 0; i < len(vals); i++ {
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bitsX := math.Float32bits(vals[i].X())
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bitsY := math.Float32bits(vals[i].Y())
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bitsZ := math.Float32bits(vals[i].Z())
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buf[*startIndex] = byte(bitsX)
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buf[*startIndex+1] = byte(bitsX >> 8)
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buf[*startIndex+2] = byte(bitsX >> 16)
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buf[*startIndex+3] = byte(bitsX >> 24)
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buf[*startIndex+4] = byte(bitsY)
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buf[*startIndex+5] = byte(bitsY >> 8)
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buf[*startIndex+6] = byte(bitsY >> 16)
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buf[*startIndex+7] = byte(bitsY >> 24)
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buf[*startIndex+8] = byte(bitsZ)
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buf[*startIndex+9] = byte(bitsZ >> 8)
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buf[*startIndex+10] = byte(bitsZ >> 16)
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buf[*startIndex+11] = byte(bitsZ >> 24)
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*startIndex += alignmentPerVector
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}
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}
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func WriteVec4SliceToByteBufWithAlignment(buf []byte, startIndex *int, alignmentPerVector int, vals []gglm.Vec4) {
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assert.T(*startIndex+len(vals)*alignmentPerVector <= len(buf), "failed to write slice of gglm.Vec4 with custom alignment=%d to buffer because the buffer doesn't have enough space. Start index=%d, Buffer length=%d, but needs %d bytes free", alignmentPerVector, *startIndex, len(buf), len(vals)*alignmentPerVector)
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for i := 0; i < len(vals); i++ {
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bitsX := math.Float32bits(vals[i].X())
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bitsY := math.Float32bits(vals[i].Y())
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bitsZ := math.Float32bits(vals[i].Z())
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bitsW := math.Float32bits(vals[i].W())
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buf[*startIndex] = byte(bitsX)
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buf[*startIndex+1] = byte(bitsX >> 8)
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buf[*startIndex+2] = byte(bitsX >> 16)
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buf[*startIndex+3] = byte(bitsX >> 24)
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buf[*startIndex+4] = byte(bitsY)
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buf[*startIndex+5] = byte(bitsY >> 8)
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buf[*startIndex+6] = byte(bitsY >> 16)
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buf[*startIndex+7] = byte(bitsY >> 24)
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buf[*startIndex+8] = byte(bitsZ)
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buf[*startIndex+9] = byte(bitsZ >> 8)
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buf[*startIndex+10] = byte(bitsZ >> 16)
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buf[*startIndex+11] = byte(bitsZ >> 24)
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buf[*startIndex+12] = byte(bitsW)
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buf[*startIndex+13] = byte(bitsW >> 8)
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buf[*startIndex+14] = byte(bitsW >> 16)
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buf[*startIndex+15] = byte(bitsW >> 24)
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*startIndex += alignmentPerVector
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}
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}
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func WriteMat2SliceToByteBufWithAlignment(buf []byte, startIndex *int, alignmentPerMatrix int, vals []gglm.Mat2) {
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assert.T(*startIndex+len(vals)*alignmentPerMatrix <= len(buf), "failed to write slice of gglm.Mat2 with custom alignment=%d to buffer because the buffer doesn't have enough space. Start index=%d, Buffer length=%d, but needs %d bytes free", alignmentPerMatrix, *startIndex, len(buf), len(vals)*alignmentPerMatrix)
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for i := 0; i < len(vals); i++ {
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m := &vals[i]
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WriteVec2SliceToByteBufWithAlignment(
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buf,
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startIndex,
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16,
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[]gglm.Vec2{
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{Data: m.Data[0]},
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{Data: m.Data[1]},
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},
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)
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}
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}
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func WriteMat3SliceToByteBufWithAlignment(buf []byte, startIndex *int, alignmentPerMatrix int, vals []gglm.Mat3) {
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assert.T(*startIndex+len(vals)*alignmentPerMatrix <= len(buf), "failed to write slice of gglm.Mat3 with custom alignment=%d to buffer because the buffer doesn't have enough space. Start index=%d, Buffer length=%d, but needs %d bytes free", alignmentPerMatrix, *startIndex, len(buf), len(vals)*alignmentPerMatrix)
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for i := 0; i < len(vals); i++ {
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m := &vals[i]
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WriteVec3SliceToByteBufWithAlignment(
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buf,
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startIndex,
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16,
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[]gglm.Vec3{
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{Data: m.Data[0]},
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{Data: m.Data[1]},
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{Data: m.Data[2]},
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},
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)
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}
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}
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func WriteMat4SliceToByteBufWithAlignment(buf []byte, startIndex *int, alignmentPerMatrix int, vals []gglm.Mat4) {
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assert.T(*startIndex+len(vals)*alignmentPerMatrix <= len(buf), "failed to write slice of gglm.Mat2 with custom alignment=%d to buffer because the buffer doesn't have enough space. Start index=%d, Buffer length=%d, but needs %d bytes free", alignmentPerMatrix, *startIndex, len(buf), len(vals)*alignmentPerMatrix)
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for i := 0; i < len(vals); i++ {
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m := &vals[i]
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WriteVec4SliceToByteBufWithAlignment(
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buf,
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startIndex,
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16,
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[]gglm.Vec4{
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{Data: m.Data[0]},
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{Data: m.Data[1]},
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{Data: m.Data[2]},
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{Data: m.Data[3]},
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},
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)
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}
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}
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func ReflectValueMatchesUniformBufferField(v reflect.Value, ubField *UniformBufferField) bool {
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if v.Kind() == reflect.Pointer {
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