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shader: Allow to mix an int and a float in a binary expression

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Updates #1190
This commit is contained in:
Hajime Hoshi 2020-06-21 03:34:19 +09:00
parent eb136daa39
commit 40e581c19f
2 changed files with 11 additions and 7 deletions
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14
examples/shader/main.go
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@ -35,8 +35,8 @@ var Time float
func Vertex(position vec2, texCoord vec2, color vec4) vec4 {
return mat4(
2.0/viewportSize().x, 0, 0, 0,
0, 2.0/viewportSize().y, 0, 0,
2/viewportSize().x, 0, 0, 0,
0, 2/viewportSize().y, 0, 0,
0, 0, 1, 0,
-1, -1, 0, 1,
) * vec4(position, 0, 1)
@ -45,11 +45,11 @@ func Vertex(position vec2, texCoord vec2, color vec4) vec4 {
func Fragment(position vec4) vec4 {
pos := position.xy / viewportSize()
color := 0.0
color += sin(pos.x * cos(Time / 15.0) * 80.0) + cos(pos.y * cos(Time / 15.0) * 10.0)
color += sin(pos.y * sin(Time / 10.0) * 40.0) + cos(pos.x * sin(Time / 25.0) * 40.0)
color += sin(pos.x * sin(Time / 5.0) * 10.0) + sin(pos.y * sin(Time / 35.0) * 80.0)
color *= sin(Time / 10.0) * 0.5
return vec4(color, color * 0.5, sin(color + Time / 3.0 ) * 0.75, 1.0)
color += sin(pos.x * cos(Time / 15) * 80) + cos(pos.y * cos(Time / 15) * 10)
color += sin(pos.y * sin(Time / 10) * 40) + cos(pos.x * sin(Time / 25) * 40)
color += sin(pos.x * sin(Time / 5) * 10) + sin(pos.y * sin(Time / 35) * 80)
color *= sin(Time / 10) * 0.5
return vec4(color, color * 0.5, sin(color + Time / 3 ) * 0.75, 1)
}`
type Game struct {

4
internal/shader/shader.go
View File

@ -879,6 +879,8 @@ func (cs *compileState) parseExpr(block *block, expr ast.Expr) ([]shaderir.Expr,
t = lhst
} else if lhst.Main == shaderir.Float || lhst.Main == shaderir.Int {
switch rhst.Main {
case shaderir.Int:
t = lhst
case shaderir.Float, shaderir.Vec2, shaderir.Vec3, shaderir.Vec4, shaderir.Mat2, shaderir.Mat3, shaderir.Mat4:
t = rhst
default:
@ -887,6 +889,8 @@ func (cs *compileState) parseExpr(block *block, expr ast.Expr) ([]shaderir.Expr,
}
} else if rhst.Main == shaderir.Float || rhst.Main == shaderir.Int {
switch lhst.Main {
case shaderir.Int:
t = rhst
case shaderir.Float, shaderir.Vec2, shaderir.Vec3, shaderir.Vec4, shaderir.Mat2, shaderir.Mat3, shaderir.Mat4:
t = lhst
default: