When I test TEST_CASE("SourceAlphaBlending", "[composition][interactive][no_auto]"), the Runtime used Monado, and the resulting graphic results were as follows:
I found that the colors of the three rectangles are not exactly the same. It is easy to see that the blue color of the middle rectangle is bluer.
And in my runtime, the pipeline's color blend config is:
VkBlendFactor blend_factor = premultiplied_alpha ? VK_BLEND_FACTOR_ONE : VK_BLEND_FACTOR_SRC_ALPHA;
// final_color.rgb = (new_color.rgb * srcColorBlendFactor) [colorBlendOp] (old_color.rgb * dstColorBlendFactor)
// final_color.alpha = (new_color.a * srcAlphaBlendFactor) [alphaBlendOp] (old_color.a * dstAlphaBlendFactor)
&(VkPipelineColorBlendAttachmentState){
.blendEnable = VK_TRUE,
.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT,
.srcColorBlendFactor = blend_factor,
.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA,
.colorBlendOp = VK_BLEND_OP_ADD,
.srcAlphaBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA,
.dstAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA,
.alphaBlendOp = VK_BLEND_OP_ADD,
}Is this correct? Hope to get your reply very much, thank you!
When I test TEST_CASE("SourceAlphaBlending", "[composition][interactive][no_auto]"), the Runtime used Monado, and the resulting graphic results were as follows:
I found that the colors of the three rectangles are not exactly the same. It is easy to see that the blue color of the middle rectangle is bluer.
And in my runtime, the pipeline's color blend config is:
Is this correct? Hope to get your reply very much, thank you!