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81064cc239
We don't use that info for anything, and it generates unnecessary diffs every time we bump the minor version (and CI failures if we forget to sync some files from opt-in modules (mono, text_server_fb).
111 lines
6.9 KiB
XML
111 lines
6.9 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<class name="RDPipelineColorBlendStateAttachment" inherits="RefCounted" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
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<brief_description>
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Pipeline color blend state attachment (used by [RenderingDevice]).
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</brief_description>
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<description>
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Controls how blending between source and destination fragments is performed when using [RenderingDevice].
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For reference, this is how common user-facing blend modes are implemented in Godot's 2D renderer:
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[b]Mix:[/b]
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[codeblock]
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var attachment = RDPipelineColorBlendStateAttachment.new()
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attachment.enable_blend = true
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attachment.color_blend_op = RenderingDevice.BLEND_OP_ADD
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attachment.src_color_blend_factor = RenderingDevice.BLEND_FACTOR_SRC_ALPHA
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attachment.dst_color_blend_factor = RenderingDevice.BLEND_FACTOR_ONE_MINUS_SRC_ALPHA
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attachment.alpha_blend_op = RenderingDevice.BLEND_OP_ADD
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attachment.src_alpha_blend_factor = RenderingDevice.BLEND_FACTOR_ONE
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attachment.dst_alpha_blend_factor = RenderingDevice.BLEND_FACTOR_ONE_MINUS_SRC_ALPHA
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[/codeblock]
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[b]Add:[/b]
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[codeblock]
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var attachment = RDPipelineColorBlendStateAttachment.new()
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attachment.enable_blend = true
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attachment.alpha_blend_op = RenderingDevice.BLEND_OP_ADD
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attachment.color_blend_op = RenderingDevice.BLEND_OP_ADD
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attachment.src_color_blend_factor = RenderingDevice.BLEND_FACTOR_SRC_ALPHA
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attachment.dst_color_blend_factor = RenderingDevice.BLEND_FACTOR_ONE
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attachment.src_alpha_blend_factor = RenderingDevice.BLEND_FACTOR_SRC_ALPHA
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attachment.dst_alpha_blend_factor = RenderingDevice.BLEND_FACTOR_ONE
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[/codeblock]
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[b]Subtract:[/b]
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[codeblock]
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var attachment = RDPipelineColorBlendStateAttachment.new()
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attachment.enable_blend = true
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attachment.alpha_blend_op = RenderingDevice.BLEND_OP_REVERSE_SUBTRACT
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attachment.color_blend_op = RenderingDevice.BLEND_OP_REVERSE_SUBTRACT
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attachment.src_color_blend_factor = RenderingDevice.BLEND_FACTOR_SRC_ALPHA
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attachment.dst_color_blend_factor = RenderingDevice.BLEND_FACTOR_ONE
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attachment.src_alpha_blend_factor = RenderingDevice.BLEND_FACTOR_SRC_ALPHA
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attachment.dst_alpha_blend_factor = RenderingDevice.BLEND_FACTOR_ONE
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[/codeblock]
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[b]Multiply:[/b]
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[codeblock]
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var attachment = RDPipelineColorBlendStateAttachment.new()
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attachment.enable_blend = true
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attachment.alpha_blend_op = RenderingDevice.BLEND_OP_ADD
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attachment.color_blend_op = RenderingDevice.BLEND_OP_ADD
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attachment.src_color_blend_factor = RenderingDevice.BLEND_FACTOR_DST_COLOR
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attachment.dst_color_blend_factor = RenderingDevice.BLEND_FACTOR_ZERO
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attachment.src_alpha_blend_factor = RenderingDevice.BLEND_FACTOR_DST_ALPHA
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attachment.dst_alpha_blend_factor = RenderingDevice.BLEND_FACTOR_ZERO
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[/codeblock]
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[b]Pre-multiplied alpha:[/b]
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[codeblock]
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var attachment = RDPipelineColorBlendStateAttachment.new()
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attachment.enable_blend = true
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attachment.alpha_blend_op = RenderingDevice.BLEND_OP_ADD
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attachment.color_blend_op = RenderingDevice.BLEND_OP_ADD
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attachment.src_color_blend_factor = RenderingDevice.BLEND_FACTOR_ONE
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attachment.dst_color_blend_factor = RenderingDevice.BLEND_FACTOR_ONE_MINUS_SRC_ALPHA
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attachment.src_alpha_blend_factor = RenderingDevice.BLEND_FACTOR_ONE
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attachment.dst_alpha_blend_factor = RenderingDevice.BLEND_FACTOR_ONE_MINUS_SRC_ALPHA
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[/codeblock]
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</description>
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<tutorials>
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</tutorials>
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<methods>
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<method name="set_as_mix">
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<return type="void" />
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<description>
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Convenience method to perform standard mix blending with straight (non-premultiplied) alpha. This sets [member enable_blend] to [code]true[/code], [member src_color_blend_factor] to [constant RenderingDevice.BLEND_FACTOR_SRC_ALPHA], [member dst_color_blend_factor] to [constant RenderingDevice.BLEND_FACTOR_ONE_MINUS_SRC_ALPHA], [member src_alpha_blend_factor] to [constant RenderingDevice.BLEND_FACTOR_SRC_ALPHA] and [member dst_alpha_blend_factor] to [constant RenderingDevice.BLEND_FACTOR_ONE_MINUS_SRC_ALPHA].
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</description>
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</method>
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</methods>
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<members>
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<member name="alpha_blend_op" type="int" setter="set_alpha_blend_op" getter="get_alpha_blend_op" enum="RenderingDevice.BlendOperation" default="0">
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The blend mode to use for the alpha channel.
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</member>
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<member name="color_blend_op" type="int" setter="set_color_blend_op" getter="get_color_blend_op" enum="RenderingDevice.BlendOperation" default="0">
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The blend mode to use for the red/green/blue color channels.
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</member>
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<member name="dst_alpha_blend_factor" type="int" setter="set_dst_alpha_blend_factor" getter="get_dst_alpha_blend_factor" enum="RenderingDevice.BlendFactor" default="0">
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Controls how the blend factor for the alpha channel is determined based on the destination's fragments.
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</member>
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<member name="dst_color_blend_factor" type="int" setter="set_dst_color_blend_factor" getter="get_dst_color_blend_factor" enum="RenderingDevice.BlendFactor" default="0">
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Controls how the blend factor for the color channels is determined based on the destination's fragments.
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</member>
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<member name="enable_blend" type="bool" setter="set_enable_blend" getter="get_enable_blend" default="false">
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If [code]true[/code], performs blending between the source and destination according to the factors defined in [member src_color_blend_factor], [member dst_color_blend_factor], [member src_alpha_blend_factor] and [member dst_alpha_blend_factor]. The blend modes [member color_blend_op] and [member alpha_blend_op] are also taken into account, with [member write_r], [member write_g], [member write_b] and [member write_a] controlling the output.
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</member>
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<member name="src_alpha_blend_factor" type="int" setter="set_src_alpha_blend_factor" getter="get_src_alpha_blend_factor" enum="RenderingDevice.BlendFactor" default="0">
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Controls how the blend factor for the alpha channel is determined based on the source's fragments.
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</member>
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<member name="src_color_blend_factor" type="int" setter="set_src_color_blend_factor" getter="get_src_color_blend_factor" enum="RenderingDevice.BlendFactor" default="0">
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Controls how the blend factor for the color channels is determined based on the source's fragments.
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</member>
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<member name="write_a" type="bool" setter="set_write_a" getter="get_write_a" default="true">
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If [code]true[/code], writes the new alpha channel to the final result.
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</member>
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<member name="write_b" type="bool" setter="set_write_b" getter="get_write_b" default="true">
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If [code]true[/code], writes the new blue color channel to the final result.
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</member>
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<member name="write_g" type="bool" setter="set_write_g" getter="get_write_g" default="true">
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If [code]true[/code], writes the new green color channel to the final result.
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</member>
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<member name="write_r" type="bool" setter="set_write_r" getter="get_write_r" default="true">
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If [code]true[/code], writes the new red color channel to the final result.
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</member>
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</members>
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</class>
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