Enable multisample antialiasing. 更多...
导入语句: | import Qt3D.Render 2.2 |
Since: | Qt 5.7 |
实例化: | QMultiSampleAntiAliasing |
继承: | RenderState |
A MultiSampleAntiAliasing type enables multisample antialiasing.
It can be added to a RenderPass :
RenderPass { shaderProgram: ShaderProgram { // ... } renderStates: [ MultiSampleAntiAliasing {} ] }
Or a RenderStateSet :
RenderStateSet { renderStates: [ MultiSampleAntiAliasing {} ] }
For multisampling to take effect, the render target must have been allocated with multisampling enabled:
RenderTarget { attachments: [ RenderTargetOutput { attachmentPoint: RenderTargetOutput.Color0 texture: Texture2DMultisample { width: 1024 height: 1024 format: Texture.RGBA8_UNorm } }, RenderTargetOutput { attachmentPoint: RenderTargetOutput.DepthStencil texture: Texture2DMultisample{ width: 1024 height: 1024 format: Texture.D24S8 } } ] }
Further, the shader code must use multisampling sampler types and texelFetch() instead of texture().
Further, the shader code must use multisampling sampler types and texelFetch() instead of texture().
For example, if you have code like
#version 150 uniform sampler2D colorTexture; in vec2 texCoord; out vec4 fragColor; void main() { fragColor = texture(colorTexture, texCoord); }
you can rewrite it as
#version 150 uniform sampler2DMS colorTexture; in vec2 texCoord; out vec4 fragColor; void main() { ivec2 tc = ivec2(floor(textureSize(colorTexture) * texCoord)); vec4 c = texelFetch(colorTexture, tc, 0) + texelFetch(colorTexture, tc, 1) + texelFetch(colorTexture, tc, 2) + texelFetch(colorTexture, tc, 3); fragColor = c / 4.0; }
注意: When using OpenGL as the graphics API, glEnable(GL_MULTISAMPLE) will be called if MultiSampleAntiAliasing has been added to the render states.