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graphics: Use command buffers

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This commit is contained in:
Hajime Hoshi 2016-06-03 03:24:27 +09:00
parent efd019c00e
commit 208b27d5de
2 changed files with 25 additions and 12 deletions
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2
internal/graphics/command.go
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@ -37,7 +37,7 @@ func (q *commandQueue) Enqueue(command command) {
q.commands = append(q.commands, command)
}
func (q *commandQueue) Exec(context *opengl.Context) error {
func (q *commandQueue) Flush(context *opengl.Context) error {
// TODO: Do optimizing before executing
for _, c := range q.commands {
if err := c.Exec(context); err != nil {

35
internal/graphics/framebuffer.go
View File

@ -43,24 +43,25 @@ type Framebuffer struct {
}
func NewZeroFramebuffer(c *opengl.Context, width, height int) (*Framebuffer, error) {
r := &Framebuffer{
f := &Framebuffer{
width: width,
height: height,
flipY: true,
}
return r, nil
return f, nil
}
func NewFramebufferFromTexture(c *opengl.Context, texture *Texture) (*Framebuffer, error) {
f, err := c.NewFramebuffer(opengl.Texture(texture.native))
native, err := c.NewFramebuffer(opengl.Texture(texture.native))
if err != nil {
return nil, err
}
return &Framebuffer{
native: f,
f := &Framebuffer{
native: native,
width: texture.width,
height: texture.height,
}, nil
}
return f, nil
}
func (f *Framebuffer) Dispose(c *opengl.Context) error {
@ -98,7 +99,8 @@ func (f *Framebuffer) Fill(context *opengl.Context, clr color.Color) error {
dst: f,
color: clr,
}
return c.Exec(context)
theCommandQueue.Enqueue(c)
return nil
}
func (f *Framebuffer) DrawTexture(context *opengl.Context, t *Texture, vertices []int16, geo, clr Matrix, mode opengl.CompositeMode) error {
@ -110,11 +112,21 @@ func (f *Framebuffer) DrawTexture(context *opengl.Context, t *Texture, vertices
color: clr,
mode: mode,
}
return c.Exec(context)
theCommandQueue.Enqueue(c)
// Drawing a texture to the default buffer must be the last command.
// TODO(hajimehoshi): This seems a little hacky. Refactor.
if f.native == opengl.ZeroFramebuffer {
return theCommandQueue.Flush(context)
}
return nil
}
func (f *Framebuffer) Pixels(c *opengl.Context) ([]uint8, error) {
return c.FramebufferPixels(f.native, f.width, f.height)
func (f *Framebuffer) Pixels(context *opengl.Context) ([]uint8, error) {
// Flush the enqueued commands so that pixels are certainly read.
if err := theCommandQueue.Flush(context); err != nil {
return nil, err
}
return context.FramebufferPixels(f.native, f.width, f.height)
}
func (f *Framebuffer) ReplacePixels(context *opengl.Context, t *Texture, p []uint8) error {
@ -123,5 +135,6 @@ func (f *Framebuffer) ReplacePixels(context *opengl.Context, t *Texture, p []uin
texture: t,
pixels: p,
}
return c.Exec(context)
theCommandQueue.Enqueue(c)
return nil
}