Keeps the main wlr_renderer.h a tad more tidy.master
Simon Ser
1 year ago
parent
568b1943b9
commit
d3d3e19ffd
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/*
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* This an unstable interface of wlroots. No guarantees are made regarding the
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* future consistency of this API.
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*/
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#ifndef WLR_USE_UNSTABLE
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#error "Add -DWLR_USE_UNSTABLE to enable unstable wlroots features"
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#endif
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#ifndef WLR_RENDER_PASS_H
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#define WLR_RENDER_PASS_H
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#include <pixman.h>
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#include <stdint.h>
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#include <wayland-server-core.h>
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#include <wlr/util/box.h>
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struct wlr_renderer;
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struct wlr_buffer;
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/**
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* A render pass accumulates drawing operations until submitted to the GPU.
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*/
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struct wlr_render_pass;
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/**
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* An object that can be queried after a render to get the duration of the render.
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*/
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struct wlr_render_timer;
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struct wlr_buffer_pass_options {
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/* Timer to measure the duration of the render pass */
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struct wlr_render_timer *timer;
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};
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/**
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* Begin a new render pass with the supplied destination buffer.
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*
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* Callers must call wlr_render_pass_submit() once they are done with the
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* render pass.
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*/
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struct wlr_render_pass *wlr_renderer_begin_buffer_pass(struct wlr_renderer *renderer,
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struct wlr_buffer *buffer, const struct wlr_buffer_pass_options *options);
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/**
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* Submit the render pass.
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*
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* The render pass cannot be used after this function is called.
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*/
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bool wlr_render_pass_submit(struct wlr_render_pass *render_pass);
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/**
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* Blend modes.
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*/
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enum wlr_render_blend_mode {
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/* Pre-multiplied alpha (default) */
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WLR_RENDER_BLEND_MODE_PREMULTIPLIED,
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/* Blending is disabled */
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WLR_RENDER_BLEND_MODE_NONE,
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};
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/**
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* Filter modes.
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*/
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enum wlr_scale_filter_mode {
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/* bilinear texture filtering (default) */
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WLR_SCALE_FILTER_BILINEAR,
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/* nearest texture filtering */
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WLR_SCALE_FILTER_NEAREST,
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};
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struct wlr_render_texture_options {
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/* Source texture */
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struct wlr_texture *texture;
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/* Source coordinates, leave empty to render the whole texture */
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struct wlr_fbox src_box;
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/* Destination coordinates, width/height default to the texture size */
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struct wlr_box dst_box;
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/* Opacity between 0 (transparent) and 1 (opaque), leave NULL for opaque */
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const float *alpha;
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/* Clip region, leave NULL to disable clipping */
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const pixman_region32_t *clip;
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/* Transform applied to the source texture */
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enum wl_output_transform transform;
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/* Filtering */
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enum wlr_scale_filter_mode filter_mode;
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/* Blend mode */
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enum wlr_render_blend_mode blend_mode;
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};
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/**
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* Render a texture.
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*/
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void wlr_render_pass_add_texture(struct wlr_render_pass *render_pass,
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const struct wlr_render_texture_options *options);
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/**
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* A color value.
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*
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* Each channel has values between 0 and 1 inclusive. The R, G, B
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* channels need to be pre-multiplied by A.
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*/
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struct wlr_render_color {
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float r, g, b, a;
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};
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struct wlr_render_rect_options {
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/* Rectangle coordinates */
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struct wlr_box box;
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/* Source color */
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struct wlr_render_color color;
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/* Clip region, leave NULL to disable clipping */
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const pixman_region32_t *clip;
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/* Blend mode */
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enum wlr_render_blend_mode blend_mode;
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};
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/**
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* Render a rectangle.
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*/
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void wlr_render_pass_add_rect(struct wlr_render_pass *render_pass,
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const struct wlr_render_rect_options *options);
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#endif
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