From d08792bfffc6b7b28f59d7ee100091805367b7fa Mon Sep 17 00:00:00 2001 From: Guido Günther Date: Wed, 21 Feb 2018 23:20:09 +0100 Subject: Add alpha to wlr_render_with_matrix so we can use the alpha channel to e.g. blend in textures --- include/wlr/render.h | 7 ++++--- include/wlr/render/interface.h | 2 +- 2 files changed, 5 insertions(+), 4 deletions(-) (limited to 'include/wlr') diff --git a/include/wlr/render.h b/include/wlr/render.h index 3743482b..747603da 100644 --- a/include/wlr/render.h +++ b/include/wlr/render.h @@ -33,12 +33,13 @@ struct wlr_texture *wlr_render_texture_create(struct wlr_renderer *r); * float projection[16]; * float matrix[16]; * wlr_texture_get_matrix(texture, &matrix, &projection, 123, 321); - * wlr_render_with_matrix(renderer, texture, &matrix); + * wlr_render_with_matrix(renderer, texture, &matrix, 0.5f); * - * This will render the texture at <123, 321>. + * This will render the texture at <123, 321> with an alpha channel of 0.5. */ bool wlr_render_with_matrix(struct wlr_renderer *r, - struct wlr_texture *texture, const float (*matrix)[16]); + struct wlr_texture *texture, const float (*matrix)[16], float alpha); + /** * Renders a solid quad in the specified color. */ diff --git a/include/wlr/render/interface.h b/include/wlr/render/interface.h index b989e399..eda5af1c 100644 --- a/include/wlr/render/interface.h +++ b/include/wlr/render/interface.h @@ -22,7 +22,7 @@ struct wlr_renderer_impl { void (*scissor)(struct wlr_renderer *renderer, struct wlr_box *box); struct wlr_texture *(*texture_create)(struct wlr_renderer *renderer); bool (*render_with_matrix)(struct wlr_renderer *renderer, - struct wlr_texture *texture, const float (*matrix)[16]); + struct wlr_texture *texture, const float (*matrix)[16], float alpha); void (*render_quad)(struct wlr_renderer *renderer, const float (*color)[4], const float (*matrix)[16]); void (*render_ellipse)(struct wlr_renderer *renderer, -- cgit v1.2.3