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internal/graphicsdriver/opengl: Optimization: Avoid creating slices for every frame (uniform variables)

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This commit is contained in:
Hajime Hoshi 2021-10-30 00:22:28 +09:00
parent b4f45edff8
commit 60f2c7ace6
1 changed files with 44 additions and 32 deletions
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76
internal/graphicsdriver/opengl/graphics.go
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@ -48,6 +48,8 @@ type Graphics struct {
uniformVariableNameCache map[int]string
uniformVars []uniformVariable
// activatedTextures is a set of activated textures.
// textureNative cannot be a map key unfortunately.
activatedTextures []activatedTexture
@ -185,7 +187,6 @@ func (g *Graphics) DrawTriangles(dstID driver.ImageID, srcIDs [graphics.ShaderIm
g.context.blendFunc(mode)
var program program
var uniformVars []uniformVariable
if shaderID == driver.InvalidShaderID {
program = g.state.programs[programKey{
useColorM: !colorM.IsIdentity(),
@ -194,7 +195,7 @@ func (g *Graphics) DrawTriangles(dstID driver.ImageID, srcIDs [graphics.ShaderIm
}]
dw, dh := destination.framebufferSize()
uniformVars = append(uniformVars, uniformVariable{
g.uniformVars = append(g.uniformVars, uniformVariable{
name: "viewport_size",
valueSlice: []float32{float32(dw), float32(dh)},
typ: shaderir.Type{Main: shaderir.Vec2},
@ -214,7 +215,7 @@ func (g *Graphics) DrawTriangles(dstID driver.ImageID, srcIDs [graphics.ShaderIm
var esBody [16]float32
var esTranslate [4]float32
colorM.Elements(&esBody, &esTranslate)
uniformVars = append(uniformVars, uniformVariable{
g.uniformVars = append(g.uniformVars, uniformVariable{
name: "color_matrix_body",
valueSlice: esBody[:],
typ: shaderir.Type{Main: shaderir.Mat4},
@ -227,7 +228,7 @@ func (g *Graphics) DrawTriangles(dstID driver.ImageID, srcIDs [graphics.ShaderIm
if filter != driver.FilterNearest {
sw, sh := g.images[srcIDs[0]].framebufferSize()
uniformVars = append(uniformVars, uniformVariable{
g.uniformVars = append(g.uniformVars, uniformVariable{
name: "source_size",
valueSlice: []float32{float32(sw), float32(sh)},
typ: shaderir.Type{Main: shaderir.Vec2},
@ -236,7 +237,7 @@ func (g *Graphics) DrawTriangles(dstID driver.ImageID, srcIDs [graphics.ShaderIm
if filter == driver.FilterScreen {
scale := float32(destination.width) / float32(g.images[srcIDs[0]].width)
uniformVars = append(uniformVars, uniformVariable{
g.uniformVars = append(g.uniformVars, uniformVariable{
name: "scale",
value: scale,
typ: shaderir.Type{Main: shaderir.Float},
@ -245,14 +246,20 @@ func (g *Graphics) DrawTriangles(dstID driver.ImageID, srcIDs [graphics.ShaderIm
} else {
shader := g.shaders[shaderID]
program = shader.p
uniformVars = make([]uniformVariable, graphics.PreservedUniformVariablesNum+len(uniforms))
ulen := graphics.PreservedUniformVariablesNum + len(uniforms)
if cap(g.uniformVars) < ulen {
g.uniformVars = make([]uniformVariable, ulen)
} else {
g.uniformVars = g.uniformVars[:ulen]
}
{
const idx = graphics.DestinationTextureSizeUniformVariableIndex
w, h := destination.framebufferSize()
uniformVars[idx].name = g.uniformVariableName(idx)
uniformVars[idx].valueSlice = []float32{float32(w), float32(h)}
uniformVars[idx].typ = shader.ir.Uniforms[idx]
g.uniformVars[idx].name = g.uniformVariableName(idx)
g.uniformVars[idx].valueSlice = []float32{float32(w), float32(h)}
g.uniformVars[idx].typ = shader.ir.Uniforms[idx]
}
{
sizes := make([]float32, 2*len(srcIDs))
@ -265,24 +272,24 @@ func (g *Graphics) DrawTriangles(dstID driver.ImageID, srcIDs [graphics.ShaderIm
}
const idx = graphics.TextureSizesUniformVariableIndex
uniformVars[idx].name = g.uniformVariableName(idx)
uniformVars[idx].valueSlice = sizes
uniformVars[idx].typ = shader.ir.Uniforms[idx]
g.uniformVars[idx].name = g.uniformVariableName(idx)
g.uniformVars[idx].valueSlice = sizes
g.uniformVars[idx].typ = shader.ir.Uniforms[idx]
}
dw, dh := destination.framebufferSize()
{
origin := []float32{float32(dstRegion.X) / float32(dw), float32(dstRegion.Y) / float32(dh)}
const idx = graphics.TextureDestinationRegionOriginUniformVariableIndex
uniformVars[idx].name = g.uniformVariableName(idx)
uniformVars[idx].valueSlice = origin
uniformVars[idx].typ = shader.ir.Uniforms[idx]
g.uniformVars[idx].name = g.uniformVariableName(idx)
g.uniformVars[idx].valueSlice = origin
g.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 = g.uniformVariableName(idx)
uniformVars[idx].valueSlice = size
uniformVars[idx].typ = shader.ir.Uniforms[idx]
g.uniformVars[idx].name = g.uniformVariableName(idx)
g.uniformVars[idx].valueSlice = size
g.uniformVars[idx].typ = shader.ir.Uniforms[idx]
}
{
voffsets := make([]float32, 2*len(offsets))
@ -291,37 +298,37 @@ func (g *Graphics) DrawTriangles(dstID driver.ImageID, srcIDs [graphics.ShaderIm
voffsets[2*i+1] = o[1]
}
const idx = graphics.TextureSourceOffsetsUniformVariableIndex
uniformVars[idx].name = g.uniformVariableName(idx)
uniformVars[idx].valueSlice = voffsets
uniformVars[idx].typ = shader.ir.Uniforms[idx]
g.uniformVars[idx].name = g.uniformVariableName(idx)
g.uniformVars[idx].valueSlice = voffsets
g.uniformVars[idx].typ = shader.ir.Uniforms[idx]
}
{
origin := []float32{float32(srcRegion.X), float32(srcRegion.Y)}
const idx = graphics.TextureSourceRegionOriginUniformVariableIndex
uniformVars[idx].name = g.uniformVariableName(idx)
uniformVars[idx].valueSlice = origin
uniformVars[idx].typ = shader.ir.Uniforms[idx]
g.uniformVars[idx].name = g.uniformVariableName(idx)
g.uniformVars[idx].valueSlice = origin
g.uniformVars[idx].typ = shader.ir.Uniforms[idx]
}
{
size := []float32{float32(srcRegion.Width), float32(srcRegion.Height)}
const idx = graphics.TextureSourceRegionSizeUniformVariableIndex
uniformVars[idx].name = g.uniformVariableName(idx)
uniformVars[idx].valueSlice = size
uniformVars[idx].typ = shader.ir.Uniforms[idx]
g.uniformVars[idx].name = g.uniformVariableName(idx)
g.uniformVars[idx].valueSlice = size
g.uniformVars[idx].typ = shader.ir.Uniforms[idx]
}
for i, v := range uniforms {
const offset = graphics.PreservedUniformVariablesNum
uniformVars[i+offset].name = fmt.Sprintf("U%d", i+offset)
g.uniformVars[i+offset].name = fmt.Sprintf("U%d", i+offset)
switch v := v.(type) {
case float32:
uniformVars[i+offset].value = v
g.uniformVars[i+offset].value = v
case []float32:
uniformVars[i+offset].valueSlice = v
g.uniformVars[i+offset].valueSlice = v
default:
return fmt.Errorf("opengl: unexpected uniform value: %v (type: %T)", v, v)
}
uniformVars[i+offset].typ = shader.ir.Uniforms[i+offset]
g.uniformVars[i+offset].typ = shader.ir.Uniforms[i+offset]
}
}
@ -334,10 +341,15 @@ func (g *Graphics) DrawTriangles(dstID driver.ImageID, srcIDs [graphics.ShaderIm
imgs[i].native = g.images[srcID].texture
}
if err := g.useProgram(program, uniformVars, imgs); err != nil {
if err := g.useProgram(program, g.uniformVars, imgs); err != nil {
return err
}
for i := range g.uniformVars {
g.uniformVars[i] = uniformVariable{}
}
g.uniformVars = g.uniformVars[:0]
if evenOdd {
if err := destination.ensureStencilBuffer(); err != nil {
return err