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render: Introduce wlr_render_texture_options.blend_mode

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This commit is contained in:
Alexander Orzechowski 2023-06-19 13:16:34 -04:00
parent 693005ac99
commit 2044cc2311
5 changed files with 39 additions and 30 deletions
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2
include/wlr/render/wlr_renderer.h
View file

@ -221,6 +221,8 @@ struct wlr_render_texture_options {
enum wl_output_transform transform;
/* Filtering */
enum wlr_scale_filter_mode filter_mode;
/* Blend mode */
enum wlr_render_blend_mode blend_mode;
};
/**

33
render/gles2/pass.c
View file

@ -121,6 +121,17 @@ static void set_tex_matrix(GLint loc, enum wl_output_transform trans,
glUniformMatrix3fv(loc, 1, GL_FALSE, tex_matrix);
}
static void setup_blending(enum wlr_render_blend_mode mode) {
switch (mode) {
case WLR_RENDER_BLEND_MODE_PREMULTIPLIED:
glEnable(GL_BLEND);
break;
case WLR_RENDER_BLEND_MODE_NONE:
glDisable(GL_BLEND);
break;
}
}
static void render_pass_add_texture(struct wlr_render_pass *wlr_pass,
const struct wlr_render_texture_options *options) {
struct wlr_gles2_render_pass *pass = get_render_pass(wlr_pass);
@ -159,12 +170,8 @@ static void render_pass_add_texture(struct wlr_render_pass *wlr_pass,
src_fbox.height /= options->texture->height;
push_gles2_debug(renderer);
if (!texture->has_alpha && alpha == 1.0) {
glDisable(GL_BLEND);
} else {
glEnable(GL_BLEND);
}
setup_blending(!texture->has_alpha && alpha == 1.0 ?
WLR_RENDER_BLEND_MODE_NONE : options->blend_mode);
glUseProgram(shader->program);
@ -202,19 +209,7 @@ static void render_pass_add_rect(struct wlr_render_pass *wlr_pass,
const struct wlr_box *box = &options->box;
push_gles2_debug(renderer);
switch (options->blend_mode) {
case WLR_RENDER_BLEND_MODE_PREMULTIPLIED:
if (color->a == 1.0) {
glDisable(GL_BLEND);
} else {
glEnable(GL_BLEND);
}
break;
case WLR_RENDER_BLEND_MODE_NONE:
glDisable(GL_BLEND);
break;
}
setup_blending(color->a == 1.0 ? WLR_RENDER_BLEND_MODE_NONE : options->blend_mode);
glUseProgram(renderer->shaders.quad.program);

6
render/pass.c
View file

@ -113,10 +113,16 @@ static void legacy_add_texture(struct wlr_render_pass *wlr_pass,
pixman_region32_t clip;
get_clip_region(pass, options->clip, &clip);
float black[4] = {0};
int rects_len = 0;
const pixman_box32_t *rects = pixman_region32_rectangles(&clip, &rects_len);
for (int i = 0; i < rects_len; i++) {
scissor(pass->renderer, &rects[i]);
if (options->blend_mode == WLR_RENDER_BLEND_MODE_NONE) {
wlr_renderer_clear(pass->renderer, black);
}
wlr_render_subtexture_with_matrix(pass->renderer, texture, &src_box, matrix, alpha);
}

26
render/pixman/pass.c
View file

@ -26,6 +26,16 @@ static bool render_pass_submit(struct wlr_render_pass *wlr_pass) {
return true;
}
static pixman_op_t get_pixman_blending(enum wlr_render_blend_mode mode) {
switch (mode) {
case WLR_RENDER_BLEND_MODE_PREMULTIPLIED:
return PIXMAN_OP_OVER;
case WLR_RENDER_BLEND_MODE_NONE:
return PIXMAN_OP_SRC;
}
abort();
}
static void render_pass_add_texture(struct wlr_render_pass *wlr_pass,
const struct wlr_render_texture_options *options) {
struct wlr_pixman_render_pass *pass = get_render_pass(wlr_pass);
@ -129,8 +139,10 @@ static void render_pass_add_texture(struct wlr_render_pass *wlr_pass,
break;
}
pixman_op_t op = get_pixman_blending(options->blend_mode);
pixman_image_set_clip_region32(buffer->image, (pixman_region32_t *)options->clip);
pixman_image_composite32(PIXMAN_OP_OVER, texture->image, mask,
pixman_image_composite32(op, texture->image, mask,
buffer->image, src_box.x, src_box.y, 0, 0, dest_x, dest_y,
width, height);
pixman_image_set_clip_region32(buffer->image, NULL);
@ -152,16 +164,8 @@ static void render_pass_add_rect(struct wlr_render_pass *wlr_pass,
struct wlr_pixman_buffer *buffer = pass->buffer;
struct wlr_box box = options->box;
pixman_op_t op = 0;
switch (options->blend_mode) {
case WLR_RENDER_BLEND_MODE_PREMULTIPLIED:
op = options->color.a == 1 ? PIXMAN_OP_SRC : PIXMAN_OP_OVER;
break;
case WLR_RENDER_BLEND_MODE_NONE:
op = PIXMAN_OP_SRC;
break;
}
assert(op != 0);
pixman_op_t op = get_pixman_blending(options->color.a == 1 ?
WLR_RENDER_BLEND_MODE_NONE : options->blend_mode);
struct pixman_color color = {
.red = options->color.r * 0xFFFF,

2
render/vulkan/pass.c
View file

@ -550,6 +550,8 @@ static void render_pass_add_texture(struct wlr_render_pass *wlr_pass,
.filter_mode = options->filter_mode,
},
.texture_transform = texture->transform,
.blend_mode = !texture->has_alpha && alpha == 1.0 ?
WLR_RENDER_BLEND_MODE_NONE : options->blend_mode,
});
if (!pipe) {
pass->failed = true;