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Cubemap depth fbo attachments

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bloeys
2024-04-15 04:16:44 +04:00
parent 22ba9ca891
commit a5bea5a661
2 changed files with 74 additions and 33 deletions
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31
buffers/framebuffer.go
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@ -11,6 +11,7 @@ const (
FramebufferAttachmentType_Unknown FramebufferAttachmentType = iota
FramebufferAttachmentType_Texture
FramebufferAttachmentType_Renderbuffer
FramebufferAttachmentType_Cubemap
)
func (f FramebufferAttachmentType) IsValid() bool {
@ -19,6 +20,8 @@ func (f FramebufferAttachmentType) IsValid() bool {
case FramebufferAttachmentType_Texture:
fallthrough
case FramebufferAttachmentType_Renderbuffer:
fallthrough
case FramebufferAttachmentType_Cubemap:
return true
default:
@ -169,6 +172,10 @@ func (fbo *Framebuffer) NewColorAttachment(
logging.ErrLog.Fatalf("failed creating color attachment for framebuffer due to unknown attachment type. Type=%d\n", attachType)
}
if attachType == FramebufferAttachmentType_Cubemap {
logging.ErrLog.Fatalf("failed creating color attachment because cubemaps can not be color attachments (at least in this implementation. You might be able to do it manually)\n")
}
if !attachFormat.IsColorFormat() {
logging.ErrLog.Fatalf("failed creating color attachment for framebuffer due to attachment data format not being a valid color type. Data format=%d\n", attachFormat)
}
@ -304,6 +311,30 @@ func (fbo *Framebuffer) NewDepthAttachment(
// Attach to fbo
gl.FramebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, a.Id)
} else if attachType == FramebufferAttachmentType_Cubemap {
// Create cubemap
gl.GenTextures(1, &a.Id)
if a.Id == 0 {
logging.ErrLog.Fatalf("failed to generate texture for framebuffer. GlError=%d\n", gl.GetError())
}
gl.BindTexture(gl.TEXTURE_CUBE_MAP, a.Id)
for i := 0; i < 6; i++ {
gl.TexImage2D(uint32(gl.TEXTURE_CUBE_MAP_POSITIVE_X+i), 0, attachFormat.GlInternalFormat(), int32(fbo.Width), int32(fbo.Height), 0, attachFormat.GlFormat(), gl.FLOAT, nil)
}
gl.TexParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
gl.TexParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
gl.TexParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
gl.TexParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
gl.TexParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_R, gl.CLAMP_TO_EDGE)
gl.BindTexture(gl.TEXTURE_2D, 0)
// Attach to fbo
gl.FramebufferTexture(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, a.Id, 0)
}
fbo.UnBind()