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vkfullscreenquad: support setting blend operations

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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 2022-05-23 11:25:03 +10:00 committed by GStreamer Marge Bot
parent 53596c2fc6
commit fe8b4514e9
2 changed files with 161 additions and 4 deletions
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152
subprojects/gst-plugins-bad/gst-libs/gst/vulkan/gstvkfullscreenquad.c
View file

@ -57,6 +57,14 @@ struct _GstVulkanFullScreenQuadPrivate
GstVulkanHandle *vert;
GstVulkanHandle *frag;
VkBool32 blend_enable;
VkBlendFactor src_blend_factor;
VkBlendFactor src_alpha_blend_factor;
VkBlendFactor dst_blend_factor;
VkBlendFactor dst_alpha_blend_factor;
VkBlendOp colour_blend_op;
VkBlendOp alpha_blend_op;
};
G_DEFINE_TYPE_WITH_CODE (GstVulkanFullScreenQuad, gst_vulkan_full_screen_quad,
@ -278,6 +286,7 @@ create_pipeline_layout (GstVulkanFullScreenQuad * self, GError ** error)
static gboolean
create_render_pass (GstVulkanFullScreenQuad * self, GError ** error)
{
GstVulkanFullScreenQuadPrivate *priv = GET_PRIV (self);
VkAttachmentDescription color_attachments[GST_VIDEO_MAX_PLANES];
VkAttachmentReference color_attachment_refs[GST_VIDEO_MAX_PLANES];
VkRenderPassCreateInfo render_pass_info;
@ -468,19 +477,43 @@ create_pipeline (GstVulkanFullScreenQuad * self, GError ** error)
color_blend_attachments[0] = (VkPipelineColorBlendAttachmentState) {
.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT,
.blendEnable = VK_FALSE
.srcColorBlendFactor = priv->src_blend_factor,
.dstColorBlendFactor = priv->dst_blend_factor,
.colorBlendOp = priv->colour_blend_op,
.srcAlphaBlendFactor = priv->src_alpha_blend_factor,
.dstAlphaBlendFactor = priv->dst_alpha_blend_factor,
.alphaBlendOp = priv->alpha_blend_op,
.blendEnable = priv->blend_enable
};
color_blend_attachments[1] = (VkPipelineColorBlendAttachmentState) {
.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT,
.blendEnable = VK_FALSE
.srcColorBlendFactor = priv->src_blend_factor,
.dstColorBlendFactor = priv->dst_blend_factor,
.colorBlendOp = priv->colour_blend_op,
.srcAlphaBlendFactor = priv->src_alpha_blend_factor,
.dstAlphaBlendFactor = priv->dst_alpha_blend_factor,
.alphaBlendOp = priv->alpha_blend_op,
.blendEnable = priv->blend_enable
};
color_blend_attachments[2] = (VkPipelineColorBlendAttachmentState) {
.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT,
.blendEnable = VK_FALSE
.srcColorBlendFactor = priv->src_blend_factor,
.dstColorBlendFactor = priv->dst_blend_factor,
.colorBlendOp = priv->colour_blend_op,
.srcAlphaBlendFactor = priv->src_alpha_blend_factor,
.dstAlphaBlendFactor = priv->dst_alpha_blend_factor,
.alphaBlendOp = priv->alpha_blend_op,
.blendEnable = priv->blend_enable
};
color_blend_attachments[3] = (VkPipelineColorBlendAttachmentState) {
.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT,
.blendEnable = VK_FALSE
.srcColorBlendFactor = priv->src_blend_factor,
.dstColorBlendFactor = priv->dst_blend_factor,
.colorBlendOp = priv->colour_blend_op,
.srcAlphaBlendFactor = priv->src_alpha_blend_factor,
.dstAlphaBlendFactor = priv->dst_alpha_blend_factor,
.alphaBlendOp = priv->alpha_blend_op,
.blendEnable = priv->blend_enable
};
color_blending = (VkPipelineColorBlendStateCreateInfo) {
@ -768,7 +801,16 @@ destroy_pipeline (GstVulkanFullScreenQuad * self)
void
gst_vulkan_full_screen_quad_init (GstVulkanFullScreenQuad * self)
{
GstVulkanFullScreenQuadPrivate *priv = GET_PRIV (self);
self->trash_list = gst_vulkan_trash_fence_list_new ();
priv->src_blend_factor = VK_BLEND_FACTOR_ONE;
priv->src_alpha_blend_factor = VK_BLEND_FACTOR_ONE;
priv->dst_blend_factor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
priv->dst_alpha_blend_factor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
priv->colour_blend_op = VK_BLEND_OP_ADD;
priv->alpha_blend_op = VK_BLEND_OP_ADD;
}
/**
@ -1182,6 +1224,108 @@ error:
return FALSE;
}
/**
* gst_vulkan_full_screen_quad_enable_blend:
* @self: the #GstVulkanFullScreenQuad
* @enable_blend: whether to enable blending
*
* Enables blending of the input image to the output image.
*
* See also: gst_vulkan_full_screen_quad_set_blend_operation() and
* gst_vulkan_full_screen_quad_set_blend_factors().
*
* Since: 1.22
*/
void
gst_vulkan_full_screen_quad_enable_blend (GstVulkanFullScreenQuad * self,
gboolean enable_blend)
{
GstVulkanFullScreenQuadPrivate *priv;
g_return_if_fail (GST_IS_VULKAN_FULL_SCREEN_QUAD (self));
priv = GET_PRIV (self);
if (priv->blend_enable == VK_TRUE && enable_blend)
return;
if (priv->blend_enable == VK_FALSE && !enable_blend)
return;
priv->blend_enable = enable_blend ? VK_TRUE : VK_FALSE;
clear_graphics_pipeline (self);
}
/**
* gst_vulkan_full_screen_quad_set_blend_factors:
* @self: the #GstVulkanFullScreenQuad
* @src_blend_factor: the `VkBlendFactor` for the source image for the colour
* components (RGB)
* @src_alpha_blend_factor: the `VkBlendFactor` for the source image for the
* alpha component.
* @dst_blend_factor: the `VkBlendFactor` for the destination image for the
* colour components (RGB)
* @dst_alpha_blend_factor: the `VkBlendFactor` for the destination image for
* the alpha component.
*
* You need to enable blend with gst_vulkan_full_screen_quad_enable_blend().
*
* See also: gst_vulkan_full_screen_quad_set_blend_operation().
*
* Since: 1.22
*/
void
gst_vulkan_full_screen_quad_set_blend_factors (GstVulkanFullScreenQuad * self,
VkBlendFactor src_blend_factor, VkBlendFactor dst_blend_factor,
VkBlendFactor src_alpha_blend_factor, VkBlendFactor dst_alpha_blend_factor)
{
GstVulkanFullScreenQuadPrivate *priv;
g_return_if_fail (GST_IS_VULKAN_FULL_SCREEN_QUAD (self));
priv = GET_PRIV (self);
if (priv->src_blend_factor == src_blend_factor
&& priv->src_alpha_blend_factor == src_alpha_blend_factor
&& priv->dst_blend_factor == dst_blend_factor
&& priv->dst_alpha_blend_factor == dst_alpha_blend_factor)
return;
priv->src_blend_factor = src_blend_factor;
priv->src_alpha_blend_factor = src_alpha_blend_factor;
priv->dst_blend_factor = dst_blend_factor;
priv->dst_alpha_blend_factor = dst_alpha_blend_factor;
clear_graphics_pipeline (self);
}
/**
* gst_vulkan_full_screen_quad_set_blend_operation:
* @self: the #GstVulkanFullScreenQuad
* @colour_blend_op: the `VkBlendOp` to use for blending colour (RGB) values
* @alpha_blend_op: the `VkBlendOp` to use for blending alpha values
*
* You need to enable blend with gst_vulkan_full_screen_quad_enable_blend().
*
* See also: gst_vulkan_full_screen_quad_set_blend_factors().
*
* Since: 1.22
*/
void
gst_vulkan_full_screen_quad_set_blend_operation (GstVulkanFullScreenQuad * self,
VkBlendOp colour_blend_op, VkBlendOp alpha_blend_op)
{
GstVulkanFullScreenQuadPrivate *priv;
g_return_if_fail (GST_IS_VULKAN_FULL_SCREEN_QUAD (self));
priv = GET_PRIV (self);
priv->colour_blend_op = colour_blend_op;
priv->alpha_blend_op = alpha_blend_op;
clear_graphics_pipeline (self);
}
/**
* gst_vulkan_full_screen_quad_prepare_draw:
* @self: the #GstVulkanFullScreenQuad

13
subprojects/gst-plugins-bad/gst-libs/gst/vulkan/gstvkfullscreenquad.h
View file

@ -119,6 +119,19 @@ GST_VULKAN_API
gboolean gst_vulkan_full_screen_quad_set_input_buffer (GstVulkanFullScreenQuad * self, GstBuffer * buffer, GError ** error);
GST_VULKAN_API
gboolean gst_vulkan_full_screen_quad_set_output_buffer (GstVulkanFullScreenQuad * self, GstBuffer * buffer, GError ** error);
GST_VULKAN_API
void gst_vulkan_full_screen_quad_enable_blend (GstVulkanFullScreenQuad * self,
gboolean enable_blend);
GST_VULKAN_API
void gst_vulkan_full_screen_quad_set_blend_operation (GstVulkanFullScreenQuad * self,
VkBlendOp colour_blend_op,
VkBlendOp alpha_blend_op);
GST_VULKAN_API
void gst_vulkan_full_screen_quad_set_blend_factors (GstVulkanFullScreenQuad * self,
VkBlendFactor src_blend_factor,
VkBlendFactor dst_blend_factor,
VkBlendFactor src_alpha_blend_factor,
VkBlendFactor dst_alpha_blend_factor);
GST_VULKAN_API
gboolean gst_vulkan_full_screen_quad_prepare_draw (GstVulkanFullScreenQuad * self, GstVulkanFence * fence, GError ** error);