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Bug fix: blending

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This commit is contained in:
Hajime Hoshi 2013-10-11 11:35:10 +09:00
parent 62e8755b64
commit 8004bd802e
1 changed files with 4 additions and 2 deletions
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6
graphics/opengl/context.go
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@ -76,7 +76,7 @@ func (context *Context) Screen() graphics.Texture {
} }
func (context *Context) Clear() { func (context *Context) Clear() {
C.glClearColor(0, 0, 0, 0) C.glClearColor(0, 0, 0, 255)
C.glClear(C.GL_COLOR_BUFFER_BIT) C.glClear(C.GL_COLOR_BUFFER_BIT)
} }
@ -227,8 +227,10 @@ func (context *Context) setOffscreen(texture *Texture) {
if err := C.glCheckFramebufferStatus(C.GL_FRAMEBUFFER); err != C.GL_FRAMEBUFFER_COMPLETE { if err := C.glCheckFramebufferStatus(C.GL_FRAMEBUFFER); err != C.GL_FRAMEBUFFER_COMPLETE {
panic(fmt.Sprintf("glBindFramebuffer failed: %d", err)) panic(fmt.Sprintf("glBindFramebuffer failed: %d", err))
} }
C.glEnable(C.GL_BLEND) C.glEnable(C.GL_BLEND)
C.glBlendFunc(C.GL_SRC_ALPHA, C.GL_ONE_MINUS_SRC_ALPHA) C.glBlendFuncSeparate(C.GL_SRC_ALPHA, C.GL_ONE_MINUS_SRC_ALPHA,
C.GL_ZERO, C.GL_ONE)
C.glViewport(0, 0, C.GLsizei(abs(texture.textureWidth)), C.glViewport(0, 0, C.GLsizei(abs(texture.textureWidth)),
C.GLsizei(abs(texture.textureHeight))) C.GLsizei(abs(texture.textureHeight)))