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Add STEPS uniform to get the number of steps programmatically

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ChaoticByte 2025-04-09 19:04:11 +02:00
parent c9c5428dbc
commit ebc8ce2cb9
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1 changed files with 7 additions and 3 deletions
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10
src/ImageCompositor.gd
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@ -37,9 +37,9 @@ func validate_shader_compilation(shader: Shader) -> bool:
# test if uniform list is empty -> if it is empty, the shader compilation failed
return len(shader.get_shader_uniform_list()) > 0
func shader_has_step_uniform(shader: Shader) -> bool:
func shader_has_uniform(shader: Shader, name: String, type: int) -> bool:
for u in shader.get_shader_uniform_list():
if u["name"] == "STEP" && u["type"] == 2:
if u["name"] == name && u["type"] == type:
return true
return false
@ -55,7 +55,8 @@ func update(overwrite_image_path: String = "") -> Array: # returns error message
return ["No shader opened!"]
# get number of steps & check if code has STEP uniform
var steps: int = ShaderDirectiveParser.parse_steps_directive(shader.code)
var has_step_uniform: bool = shader_has_step_uniform(shader)
var has_step_uniform: bool = shader_has_uniform(shader, "STEP", 2)
var has_steps_uniform: bool = shader_has_uniform(shader, "STEPS", 2)
# validate shader
if not validate_shader_compilation(shader):
return ["Shader compilation failed!"]
@ -105,6 +106,9 @@ func update(overwrite_image_path: String = "") -> Array: # returns error message
image_sprite.material = mat
# iterate n times
set_vsync(false) # speed up processing
if has_steps_uniform:
# set STEPS param
mat.set_shader_parameter("STEPS", steps)
for i in range(steps):
if has_step_uniform:
# set STEP param