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gpu: rename BufferType to BufferBinding and make it a set

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Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2020-02-20 23:07:46 +01:00
parent 744a962beb
commit 411f566e3f
4 changed files with 37 additions and 37 deletions
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gpu/gl/backend.go
+27 -27
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@@ -64,7 +64,7 @@ type gpuFramebuffer struct {
type gpuBuffer struct {
backend *Backend
obj Buffer
typ Enum
typ gpu.BufferBinding
size int
immutable bool
version int
@@ -190,23 +190,24 @@ func (b *Backend) NewTexture(format gpu.TextureFormat, width, height int, minFil
return tex
}
func (b *Backend) NewBuffer(typ gpu.BufferType, size int) gpu.Buffer {
gltyp := toBufferType(typ)
buf := &gpuBuffer{backend: b, typ: gltyp, size: size}
switch typ {
case gpu.BufferTypeUniforms:
func (b *Backend) NewBuffer(typ gpu.BufferBinding, size int) gpu.Buffer {
buf := &gpuBuffer{backend: b, typ: typ, size: size}
if typ&gpu.BufferBindingUniforms != 0 {
if typ != gpu.BufferBindingUniforms {
panic("uniforms buffers cannot be bound as anything else")
}
// GLES 2 doesn't support uniform buffers.
buf.data = make([]byte, size)
default:
}
if typ&^gpu.BufferBindingUniforms != 0 {
buf.obj = b.funcs.CreateBuffer()
}
return buf
}
func (b *Backend) NewImmutableBuffer(typ gpu.BufferType, data []byte) gpu.Buffer {
func (b *Backend) NewImmutableBuffer(typ gpu.BufferBinding, data []byte) gpu.Buffer {
obj := b.funcs.CreateBuffer()
gltyp := toBufferType(typ)
buf := &gpuBuffer{backend: b, obj: obj, typ: gltyp, size: len(data)}
buf := &gpuBuffer{backend: b, obj: obj, typ: typ, size: len(data)}
buf.Upload(data)
buf.immutable = true
return buf
@@ -428,7 +429,7 @@ func (u *uniformsTracker) setup(funcs Functions, p Program, uniformSize int, uni
func (u *uniformsTracker) setBuffer(buffer gpu.Buffer) {
buf := buffer.(*gpuBuffer)
if buf.typ != UNIFORM_BUFFER {
if buf.typ&gpu.BufferBindingUniforms == 0 {
panic("not a uniform buffer")
}
if buf.size < u.size {
@@ -479,25 +480,24 @@ func (b *gpuBuffer) Upload(data []byte) {
panic("buffer size overflow")
}
b.version++
switch b.typ {
case UNIFORM_BUFFER:
if b.typ&gpu.BufferBindingUniforms != 0 {
copy(b.data, data)
default:
b.backend.funcs.BindBuffer(b.typ, b.obj)
b.backend.funcs.BufferData(b.typ, data, STATIC_DRAW)
}
if b.typ&^gpu.BufferBindingUniforms != 0 {
firstBinding := firstBufferType(b.typ)
b.backend.funcs.BindBuffer(firstBinding, b.obj)
b.backend.funcs.BufferData(firstBinding, data, STATIC_DRAW)
}
}
func (b *gpuBuffer) Release() {
switch b.typ {
case UNIFORM_BUFFER:
default:
if b.typ&^gpu.BufferBindingUniforms != 0 {
b.backend.funcs.DeleteBuffer(b.obj)
}
}
func (b *gpuBuffer) BindVertex(stride, offset int) {
if b.typ != ARRAY_BUFFER {
if b.typ&gpu.BufferBindingVertices == 0 {
panic("not a vertex buffer")
}
b.backend.state.buffer = bufferBinding{buf: b, stride: stride, offset: offset}
@@ -526,7 +526,7 @@ func (b *Backend) setupVertexArrays() {
}
func (b *gpuBuffer) BindIndex() {
if b.typ != ELEMENT_ARRAY_BUFFER {
if b.typ&gpu.BufferBindingIndices == 0 {
panic("not an index buffer")
}
b.backend.funcs.BindBuffer(ELEMENT_ARRAY_BUFFER, b.obj)
@@ -691,13 +691,13 @@ func hasExtension(exts []string, ext string) bool {
return false
}
func toBufferType(typ gpu.BufferType) Enum {
switch typ {
case gpu.BufferTypeVertices:
return ARRAY_BUFFER
case gpu.BufferTypeIndices:
func firstBufferType(typ gpu.BufferBinding) Enum {
switch {
case typ&gpu.BufferBindingIndices != 0:
return ELEMENT_ARRAY_BUFFER
case gpu.BufferTypeUniforms:
case typ&gpu.BufferBindingVertices != 0:
return ARRAY_BUFFER
case typ&gpu.BufferBindingUniforms != 0:
return UNIFORM_BUFFER
default:
panic("unsupported buffer type")