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vkfullscreenquad: support setting blend operations
Allows e.g. blending with an existing image. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2470>
This commit is contained in:
Matthew Waters
GStreamer Marge Bot
parent
53596c2fc6
commit
fe8b4514e9
2 changed files with 161 additions and 4 deletions
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@ -57,6 +57,14 @@ struct _GstVulkanFullScreenQuadPrivate
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GstVulkanHandle *vert;
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GstVulkanHandle *frag;
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VkBool32 blend_enable;
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VkBlendFactor src_blend_factor;
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VkBlendFactor src_alpha_blend_factor;
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VkBlendFactor dst_blend_factor;
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VkBlendFactor dst_alpha_blend_factor;
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VkBlendOp colour_blend_op;
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VkBlendOp alpha_blend_op;
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};
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G_DEFINE_TYPE_WITH_CODE (GstVulkanFullScreenQuad, gst_vulkan_full_screen_quad,
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@ -278,6 +286,7 @@ create_pipeline_layout (GstVulkanFullScreenQuad * self, GError ** error)
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static gboolean
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create_render_pass (GstVulkanFullScreenQuad * self, GError ** error)
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{
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GstVulkanFullScreenQuadPrivate *priv = GET_PRIV (self);
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VkAttachmentDescription color_attachments[GST_VIDEO_MAX_PLANES];
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VkAttachmentReference color_attachment_refs[GST_VIDEO_MAX_PLANES];
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VkRenderPassCreateInfo render_pass_info;
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@ -468,19 +477,43 @@ create_pipeline (GstVulkanFullScreenQuad * self, GError ** error)
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color_blend_attachments[0] = (VkPipelineColorBlendAttachmentState) {
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.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT,
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.blendEnable = VK_FALSE
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.srcColorBlendFactor = priv->src_blend_factor,
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.dstColorBlendFactor = priv->dst_blend_factor,
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.colorBlendOp = priv->colour_blend_op,
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.srcAlphaBlendFactor = priv->src_alpha_blend_factor,
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.dstAlphaBlendFactor = priv->dst_alpha_blend_factor,
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.alphaBlendOp = priv->alpha_blend_op,
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.blendEnable = priv->blend_enable
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};
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color_blend_attachments[1] = (VkPipelineColorBlendAttachmentState) {
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.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT,
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.blendEnable = VK_FALSE
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.srcColorBlendFactor = priv->src_blend_factor,
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.dstColorBlendFactor = priv->dst_blend_factor,
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.colorBlendOp = priv->colour_blend_op,
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.srcAlphaBlendFactor = priv->src_alpha_blend_factor,
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.dstAlphaBlendFactor = priv->dst_alpha_blend_factor,
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.alphaBlendOp = priv->alpha_blend_op,
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.blendEnable = priv->blend_enable
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};
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color_blend_attachments[2] = (VkPipelineColorBlendAttachmentState) {
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.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT,
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.blendEnable = VK_FALSE
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.srcColorBlendFactor = priv->src_blend_factor,
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.dstColorBlendFactor = priv->dst_blend_factor,
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.colorBlendOp = priv->colour_blend_op,
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.srcAlphaBlendFactor = priv->src_alpha_blend_factor,
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.dstAlphaBlendFactor = priv->dst_alpha_blend_factor,
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.alphaBlendOp = priv->alpha_blend_op,
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.blendEnable = priv->blend_enable
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};
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color_blend_attachments[3] = (VkPipelineColorBlendAttachmentState) {
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.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT,
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.blendEnable = VK_FALSE
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.srcColorBlendFactor = priv->src_blend_factor,
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.dstColorBlendFactor = priv->dst_blend_factor,
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.colorBlendOp = priv->colour_blend_op,
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.srcAlphaBlendFactor = priv->src_alpha_blend_factor,
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.dstAlphaBlendFactor = priv->dst_alpha_blend_factor,
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.alphaBlendOp = priv->alpha_blend_op,
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.blendEnable = priv->blend_enable
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};
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color_blending = (VkPipelineColorBlendStateCreateInfo) {
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@ -768,7 +801,16 @@ destroy_pipeline (GstVulkanFullScreenQuad * self)
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void
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gst_vulkan_full_screen_quad_init (GstVulkanFullScreenQuad * self)
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{
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GstVulkanFullScreenQuadPrivate *priv = GET_PRIV (self);
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self->trash_list = gst_vulkan_trash_fence_list_new ();
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priv->src_blend_factor = VK_BLEND_FACTOR_ONE;
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priv->src_alpha_blend_factor = VK_BLEND_FACTOR_ONE;
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priv->dst_blend_factor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
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priv->dst_alpha_blend_factor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
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priv->colour_blend_op = VK_BLEND_OP_ADD;
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priv->alpha_blend_op = VK_BLEND_OP_ADD;
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}
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/**
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@ -1182,6 +1224,108 @@ error:
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return FALSE;
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}
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/**
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* gst_vulkan_full_screen_quad_enable_blend:
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* @self: the #GstVulkanFullScreenQuad
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* @enable_blend: whether to enable blending
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*
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* Enables blending of the input image to the output image.
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*
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* See also: gst_vulkan_full_screen_quad_set_blend_operation() and
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* gst_vulkan_full_screen_quad_set_blend_factors().
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*
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* Since: 1.22
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*/
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void
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gst_vulkan_full_screen_quad_enable_blend (GstVulkanFullScreenQuad * self,
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gboolean enable_blend)
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{
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GstVulkanFullScreenQuadPrivate *priv;
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g_return_if_fail (GST_IS_VULKAN_FULL_SCREEN_QUAD (self));
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priv = GET_PRIV (self);
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if (priv->blend_enable == VK_TRUE && enable_blend)
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return;
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if (priv->blend_enable == VK_FALSE && !enable_blend)
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return;
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priv->blend_enable = enable_blend ? VK_TRUE : VK_FALSE;
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clear_graphics_pipeline (self);
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}
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/**
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* gst_vulkan_full_screen_quad_set_blend_factors:
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* @self: the #GstVulkanFullScreenQuad
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* @src_blend_factor: the `VkBlendFactor` for the source image for the colour
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* components (RGB)
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* @src_alpha_blend_factor: the `VkBlendFactor` for the source image for the
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* alpha component.
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* @dst_blend_factor: the `VkBlendFactor` for the destination image for the
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* colour components (RGB)
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* @dst_alpha_blend_factor: the `VkBlendFactor` for the destination image for
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* the alpha component.
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*
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* You need to enable blend with gst_vulkan_full_screen_quad_enable_blend().
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*
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* See also: gst_vulkan_full_screen_quad_set_blend_operation().
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*
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* Since: 1.22
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*/
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void
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gst_vulkan_full_screen_quad_set_blend_factors (GstVulkanFullScreenQuad * self,
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VkBlendFactor src_blend_factor, VkBlendFactor dst_blend_factor,
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VkBlendFactor src_alpha_blend_factor, VkBlendFactor dst_alpha_blend_factor)
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{
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GstVulkanFullScreenQuadPrivate *priv;
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g_return_if_fail (GST_IS_VULKAN_FULL_SCREEN_QUAD (self));
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priv = GET_PRIV (self);
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if (priv->src_blend_factor == src_blend_factor
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&& priv->src_alpha_blend_factor == src_alpha_blend_factor
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&& priv->dst_blend_factor == dst_blend_factor
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&& priv->dst_alpha_blend_factor == dst_alpha_blend_factor)
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return;
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priv->src_blend_factor = src_blend_factor;
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priv->src_alpha_blend_factor = src_alpha_blend_factor;
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priv->dst_blend_factor = dst_blend_factor;
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priv->dst_alpha_blend_factor = dst_alpha_blend_factor;
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clear_graphics_pipeline (self);
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}
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/**
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* gst_vulkan_full_screen_quad_set_blend_operation:
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* @self: the #GstVulkanFullScreenQuad
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* @colour_blend_op: the `VkBlendOp` to use for blending colour (RGB) values
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* @alpha_blend_op: the `VkBlendOp` to use for blending alpha values
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*
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* You need to enable blend with gst_vulkan_full_screen_quad_enable_blend().
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*
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* See also: gst_vulkan_full_screen_quad_set_blend_factors().
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*
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* Since: 1.22
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*/
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void
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gst_vulkan_full_screen_quad_set_blend_operation (GstVulkanFullScreenQuad * self,
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VkBlendOp colour_blend_op, VkBlendOp alpha_blend_op)
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{
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GstVulkanFullScreenQuadPrivate *priv;
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g_return_if_fail (GST_IS_VULKAN_FULL_SCREEN_QUAD (self));
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priv = GET_PRIV (self);
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priv->colour_blend_op = colour_blend_op;
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priv->alpha_blend_op = alpha_blend_op;
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clear_graphics_pipeline (self);
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}
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/**
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* gst_vulkan_full_screen_quad_prepare_draw:
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* @self: the #GstVulkanFullScreenQuad
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@ -119,6 +119,19 @@ GST_VULKAN_API
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gboolean gst_vulkan_full_screen_quad_set_input_buffer (GstVulkanFullScreenQuad * self, GstBuffer * buffer, GError ** error);
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GST_VULKAN_API
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gboolean gst_vulkan_full_screen_quad_set_output_buffer (GstVulkanFullScreenQuad * self, GstBuffer * buffer, GError ** error);
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GST_VULKAN_API
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void gst_vulkan_full_screen_quad_enable_blend (GstVulkanFullScreenQuad * self,
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gboolean enable_blend);
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GST_VULKAN_API
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void gst_vulkan_full_screen_quad_set_blend_operation (GstVulkanFullScreenQuad * self,
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VkBlendOp colour_blend_op,
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VkBlendOp alpha_blend_op);
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GST_VULKAN_API
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void gst_vulkan_full_screen_quad_set_blend_factors (GstVulkanFullScreenQuad * self,
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VkBlendFactor src_blend_factor,
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VkBlendFactor dst_blend_factor,
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VkBlendFactor src_alpha_blend_factor,
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VkBlendFactor dst_alpha_blend_factor);
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GST_VULKAN_API
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gboolean gst_vulkan_full_screen_quad_prepare_draw (GstVulkanFullScreenQuad * self, GstVulkanFence * fence, GError ** error);
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