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internal/graphicsdriver/opengl: Optimization: Avoid fmt.Sprintf

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This commit is contained in:
Hajime Hoshi 2021-10-29 21:43:40 +09:00
parent 3c1f8da7f8
commit d3ac199aa9
1 changed files with 21 additions and 7 deletions
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28
internal/graphicsdriver/opengl/graphics.go
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@ -40,6 +40,8 @@ type Graphics struct {
// drawCalled is true just after Draw is called. This holds true until ReplacePixels is called.
drawCalled bool
uniformVariableNameCache map[int]string
}
func (g *Graphics) Begin() {
@ -145,6 +147,18 @@ func (g *Graphics) SetVertices(vertices []float32, indices []uint16) {
g.context.elementArrayBufferSubData(indices)
}
func (g *Graphics) uniformVariableName(idx int) string {
if v, ok := g.uniformVariableNameCache[idx]; ok {
return v
}
if g.uniformVariableNameCache == nil {
g.uniformVariableNameCache = map[int]string{}
}
name := fmt.Sprintf("U%d", idx)
g.uniformVariableNameCache[idx] = name
return name
}
func (g *Graphics) DrawTriangles(dstID driver.ImageID, srcIDs [graphics.ShaderImageNum]driver.ImageID, offsets [graphics.ShaderImageNum - 1][2]float32, shaderID driver.ShaderID, indexLen int, indexOffset int, mode driver.CompositeMode, colorM driver.ColorM, filter driver.Filter, address driver.Address, dstRegion, srcRegion driver.Region, uniforms []interface{}, evenOdd bool) error {
destination := g.images[dstID]
@ -227,7 +241,7 @@ func (g *Graphics) DrawTriangles(dstID driver.ImageID, srcIDs [graphics.ShaderIm
{
const idx = graphics.DestinationTextureSizeUniformVariableIndex
w, h := destination.framebufferSize()
uniformVars[idx].name = fmt.Sprintf("U%d", idx)
uniformVars[idx].name = g.uniformVariableName(idx)
uniformVars[idx].valueSlice = []float32{float32(w), float32(h)}
uniformVars[idx].typ = shader.ir.Uniforms[idx]
}
@ -242,7 +256,7 @@ func (g *Graphics) DrawTriangles(dstID driver.ImageID, srcIDs [graphics.ShaderIm
}
const idx = graphics.TextureSizesUniformVariableIndex
uniformVars[idx].name = fmt.Sprintf("U%d", idx)
uniformVars[idx].name = g.uniformVariableName(idx)
uniformVars[idx].valueSlice = sizes
uniformVars[idx].typ = shader.ir.Uniforms[idx]
}
@ -250,14 +264,14 @@ func (g *Graphics) DrawTriangles(dstID driver.ImageID, srcIDs [graphics.ShaderIm
{
origin := []float32{float32(dstRegion.X) / float32(dw), float32(dstRegion.Y) / float32(dh)}
const idx = graphics.TextureDestinationRegionOriginUniformVariableIndex
uniformVars[idx].name = fmt.Sprintf("U%d", idx)
uniformVars[idx].name = g.uniformVariableName(idx)
uniformVars[idx].valueSlice = origin
uniformVars[idx].typ = shader.ir.Uniforms[idx]
}
{
size := []float32{float32(dstRegion.Width) / float32(dw), float32(dstRegion.Height) / float32(dh)}
const idx = graphics.TextureDestinationRegionSizeUniformVariableIndex
uniformVars[idx].name = fmt.Sprintf("U%d", idx)
uniformVars[idx].name = g.uniformVariableName(idx)
uniformVars[idx].valueSlice = size
uniformVars[idx].typ = shader.ir.Uniforms[idx]
}
@ -268,21 +282,21 @@ func (g *Graphics) DrawTriangles(dstID driver.ImageID, srcIDs [graphics.ShaderIm
voffsets[2*i+1] = o[1]
}
const idx = graphics.TextureSourceOffsetsUniformVariableIndex
uniformVars[idx].name = fmt.Sprintf("U%d", idx)
uniformVars[idx].name = g.uniformVariableName(idx)
uniformVars[idx].valueSlice = voffsets
uniformVars[idx].typ = shader.ir.Uniforms[idx]
}
{
origin := []float32{float32(srcRegion.X), float32(srcRegion.Y)}
const idx = graphics.TextureSourceRegionOriginUniformVariableIndex
uniformVars[idx].name = fmt.Sprintf("U%d", idx)
uniformVars[idx].name = g.uniformVariableName(idx)
uniformVars[idx].valueSlice = origin
uniformVars[idx].typ = shader.ir.Uniforms[idx]
}
{
size := []float32{float32(srcRegion.Width), float32(srcRegion.Height)}
const idx = graphics.TextureSourceRegionSizeUniformVariableIndex
uniformVars[idx].name = fmt.Sprintf("U%d", idx)
uniformVars[idx].name = g.uniformVariableName(idx)
uniformVars[idx].valueSlice = size
uniformVars[idx].typ = shader.ir.Uniforms[idx]
}