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Blending

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Signed-off-by: Slendi <slendi@socopon.com>
This commit is contained in:
Slendi
2025-12-07 01:37:06 +02:00
parent 97d6ecebc3
commit 8dd23310aa
3 changed files with 40 additions and 3 deletions
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35
src/GraphicsPipelineBuilder.cpp
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@@ -99,6 +99,41 @@ auto GraphicsPipelineBuilder::disable_blending() -> GraphicsPipelineBuilder &
return *this;
}
auto GraphicsPipelineBuilder::enable_blending_additive()
-> GraphicsPipelineBuilder &
{
m_color_blend_attachment.colorWriteMask = VK_COLOR_COMPONENT_R_BIT
| VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT
| VK_COLOR_COMPONENT_A_BIT;
m_color_blend_attachment.blendEnable = VK_TRUE;
m_color_blend_attachment.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
m_color_blend_attachment.dstColorBlendFactor = VK_BLEND_FACTOR_ONE;
m_color_blend_attachment.colorBlendOp = VK_BLEND_OP_ADD;
m_color_blend_attachment.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE;
m_color_blend_attachment.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
m_color_blend_attachment.alphaBlendOp = VK_BLEND_OP_ADD;
return *this;
}
auto GraphicsPipelineBuilder::enable_blending_alpha_blend()
-> GraphicsPipelineBuilder &
{
m_color_blend_attachment.colorWriteMask = VK_COLOR_COMPONENT_R_BIT
| VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT
| VK_COLOR_COMPONENT_A_BIT;
m_color_blend_attachment.blendEnable = VK_TRUE;
m_color_blend_attachment.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
m_color_blend_attachment.dstColorBlendFactor
= VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
m_color_blend_attachment.colorBlendOp = VK_BLEND_OP_ADD;
m_color_blend_attachment.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE;
m_color_blend_attachment.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
m_color_blend_attachment.alphaBlendOp = VK_BLEND_OP_ADD;
return *this;
}
auto GraphicsPipelineBuilder::set_color_attachment_format(VkFormat format)
-> GraphicsPipelineBuilder &
{

2
src/GraphicsPipelineBuilder.h
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@@ -26,6 +26,8 @@ struct GraphicsPipelineBuilder {
-> GraphicsPipelineBuilder &;
auto set_multisampling_none() -> GraphicsPipelineBuilder &;
auto disable_blending() -> GraphicsPipelineBuilder &;
auto enable_blending_additive() -> GraphicsPipelineBuilder &;
auto enable_blending_alpha_blend() -> GraphicsPipelineBuilder &;
auto set_color_attachment_format(VkFormat format)
-> GraphicsPipelineBuilder &;
auto set_depth_format(VkFormat format) -> GraphicsPipelineBuilder &;

6
src/VulkanRenderer.cpp
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@@ -417,7 +417,7 @@ auto VulkanRenderer::triangle_pipeline_init() -> void
.set_input_topology(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST)
.set_polygon_mode(VK_POLYGON_MODE_FILL)
.set_multisampling_none()
.disable_blending()
.enable_blending_additive()
.disable_depth_testing()
.set_color_attachment_format(m_vk.draw_image.format)
.set_depth_format(m_vk.depth_image.format)
@@ -781,8 +781,8 @@ auto VulkanRenderer::draw_geometry(VkCommandBuffer cmd) -> void
GPUDrawPushConstants push_constants;
auto rect_model { smath::scale(
smath::translate(smath::Vec3 { 0.0f, 0.0f, -5.0f }),
smath::Vec3 { 5.0f, 5.0f, 1.0f }) };
smath::translate(smath::Vec3 { 0.0f, 0.0f, -5.0f }),
smath::Vec3 { 5.0f, 5.0f, 1.0f }) };
push_constants.world_matrix = view_projection * rect_model;
push_constants.vertex_buffer = m_vk.rectangle.vertex_buffer_address;