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render/vulkan: add linear single-subpass

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When the TF is set to EXT_LINEAR, we can write out color values
straight up to a non-SRGB image view.
This commit is contained in:
Simon Ser 2025-06-21 18:22:43 +02:00
parent 3e88a79e6f
commit d1c88e9497
3 changed files with 61 additions and 18 deletions
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33
render/vulkan/pass.c
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@ -1182,10 +1182,21 @@ struct wlr_vk_render_pass *vulkan_begin_render_pass(struct wlr_vk_renderer *rend
inv_eotf = WLR_COLOR_TRANSFER_FUNCTION_SRGB;
}
bool using_linear_pathway = inv_eotf == WLR_COLOR_TRANSFER_FUNCTION_EXT_LINEAR;
bool using_srgb_pathway = inv_eotf == WLR_COLOR_TRANSFER_FUNCTION_SRGB &&
buffer->srgb.out.framebuffer != VK_NULL_HANDLE;
bool using_two_pass_pathway = !using_linear_pathway && !using_srgb_pathway;
if (!using_srgb_pathway) {
if (using_linear_pathway && !buffer->linear.out.image_view) {
struct wlr_dmabuf_attributes attribs;
wlr_buffer_get_dmabuf(buffer->wlr_buffer, &attribs);
if (!vulkan_setup_one_pass_framebuffer(buffer, &attribs, false)) {
wlr_log(WLR_ERROR, "Failed to set up blend image");
return NULL;
}
}
if (using_two_pass_pathway) {
if (options != NULL && options->color_transform != NULL &&
!get_color_transform(options->color_transform, renderer)) {
/* Try to create a new color transform */
@ -1205,10 +1216,20 @@ struct wlr_vk_render_pass *vulkan_begin_render_pass(struct wlr_vk_renderer *rend
}
}
struct wlr_vk_render_format_setup *render_setup =
using_srgb_pathway ? buffer->srgb.render_setup : buffer->two_pass.render_setup;
struct wlr_vk_render_buffer_out *buffer_out =
using_srgb_pathway ? &buffer->srgb.out : &buffer->two_pass.out;
struct wlr_vk_render_format_setup *render_setup;
struct wlr_vk_render_buffer_out *buffer_out;
if (using_two_pass_pathway) {
render_setup = buffer->two_pass.render_setup;
buffer_out = &buffer->two_pass.out;
} else if (using_srgb_pathway) {
render_setup = buffer->srgb.render_setup;
buffer_out = &buffer->srgb.out;
} else if (using_linear_pathway) {
render_setup = buffer->linear.render_setup;
buffer_out = &buffer->linear.out;
} else {
abort(); // unreachable
}
struct wlr_vk_render_pass *pass = calloc(1, sizeof(*pass));
if (pass == NULL) {
@ -1217,7 +1238,7 @@ struct wlr_vk_render_pass *vulkan_begin_render_pass(struct wlr_vk_renderer *rend
wlr_render_pass_init(&pass->base, &render_pass_impl);
pass->renderer = renderer;
pass->two_pass = !using_srgb_pathway;
pass->two_pass = using_two_pass_pathway;
if (options != NULL && options->color_transform != NULL) {
pass->color_transform = wlr_color_transform_ref(options->color_transform);
}