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Add all gl BufUsage values+support bufusage in ubo

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bloeys
2024-09-15 16:29:54 +04:00
parent 3cdd40f0a2
commit 5c98903723
5 changed files with 39 additions and 14 deletions
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35
buffers/buf_usage.go
View File

@ -9,25 +9,48 @@ import (
type BufUsage int
// Full docs for buffer usage can be found here: https://registry.khronos.org/OpenGL-Refpages/gl4/html/glBufferData.xhtml
const (
BufUsage_Unknown BufUsage = iota
//Buffer is set only once and used many times
BufUsage_Static
BufUsage_Static_Draw
//Buffer is changed a lot and used many times
BufUsage_Dynamic
BufUsage_Dynamic_Draw
//Buffer is set only once and used by the GPU at most a few times
BufUsage_Stream
BufUsage_Stream_Draw
BufUsage_Static_Read
BufUsage_Dynamic_Read
BufUsage_Stream_Read
BufUsage_Static_Copy
BufUsage_Dynamic_Copy
BufUsage_Stream_Copy
)
func (b BufUsage) ToGL() uint32 {
switch b {
case BufUsage_Static:
case BufUsage_Static_Draw:
return gl.STATIC_DRAW
case BufUsage_Dynamic:
case BufUsage_Dynamic_Draw:
return gl.DYNAMIC_DRAW
case BufUsage_Stream:
case BufUsage_Stream_Draw:
return gl.STREAM_DRAW
case BufUsage_Static_Read:
return gl.STATIC_READ
case BufUsage_Dynamic_Read:
return gl.DYNAMIC_READ
case BufUsage_Stream_Read:
return gl.STREAM_READ
case BufUsage_Static_Copy:
return gl.STATIC_COPY
case BufUsage_Dynamic_Copy:
return gl.DYNAMIC_COPY
case BufUsage_Stream_Copy:
return gl.STREAM_COPY
}
assert.T(false, fmt.Sprintf("Unexpected BufUsage value '%v'", b))

4
buffers/index_buffer.go
View File

@ -27,9 +27,9 @@ func (ib *IndexBuffer) SetData(values []uint32) {
ib.IndexBufCount = int32(len(values))
if sizeInBytes == 0 {
gl.BufferData(gl.ELEMENT_ARRAY_BUFFER, 0, gl.Ptr(nil), BufUsage_Static.ToGL())
gl.BufferData(gl.ELEMENT_ARRAY_BUFFER, 0, gl.Ptr(nil), BufUsage_Static_Draw.ToGL())
} else {
gl.BufferData(gl.ELEMENT_ARRAY_BUFFER, sizeInBytes, gl.Ptr(&values[0]), BufUsage_Static.ToGL())
gl.BufferData(gl.ELEMENT_ARRAY_BUFFER, sizeInBytes, gl.Ptr(&values[0]), BufUsage_Static_Draw.ToGL())
}
}

4
buffers/uniform_buffer.go
View File

@ -728,7 +728,7 @@ func ReflectValueMatchesUniformBufferField(v reflect.Value, ubField *UniformBuff
}
}
func NewUniformBuffer(fields []UniformBufferFieldInput) UniformBuffer {
func NewUniformBuffer(fields []UniformBufferFieldInput, usage BufUsage) UniformBuffer {
ub := UniformBuffer{}
@ -740,7 +740,7 @@ func NewUniformBuffer(fields []UniformBufferFieldInput) UniformBuffer {
}
ub.Bind()
gl.BufferData(gl.UNIFORM_BUFFER, int(ub.Size), gl.Ptr(nil), gl.STATIC_DRAW)
gl.BufferData(gl.UNIFORM_BUFFER, int(ub.Size), gl.Ptr(nil), usage.ToGL())
ub.UnBind()
return ub