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Remove unnecessary opacity marking for decoration buffers

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Kovid Goyal 2021-03-25 16:28:49 +05:30
parent 0788b98ae4
commit 4edbe0ea4f
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 23 additions and 32 deletions
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55
glfw/wl_window.c vendored
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@ -42,7 +42,7 @@
#include <sys/mman.h> #include <sys/mman.h>
static struct wl_buffer* createShmBuffer(const GLFWimage* image) static struct wl_buffer* createShmBuffer(const GLFWimage* image, bool is_opaque, bool init_data)
{ {
struct wl_shm_pool* pool; struct wl_shm_pool* pool;
struct wl_buffer* buffer; struct wl_buffer* buffer;
@ -72,28 +72,31 @@ static struct wl_buffer* createShmBuffer(const GLFWimage* image)
pool = wl_shm_create_pool(_glfw.wl.shm, fd, length); pool = wl_shm_create_pool(_glfw.wl.shm, fd, length);
close(fd); close(fd);
unsigned char* source = (unsigned char*) image->pixels; if (init_data) {
unsigned char* target = data; unsigned char* source = (unsigned char*) image->pixels;
for (i = 0; i < image->width * image->height; i++, source += 4) unsigned char* target = data;
{ for (i = 0; i < image->width * image->height; i++, source += 4)
unsigned int alpha = source[3]; {
unsigned int alpha = source[3];
*target++ = (unsigned char) ((source[2] * alpha) / 255); *target++ = (unsigned char) ((source[2] * alpha) / 255);
*target++ = (unsigned char) ((source[1] * alpha) / 255); *target++ = (unsigned char) ((source[1] * alpha) / 255);
*target++ = (unsigned char) ((source[0] * alpha) / 255); *target++ = (unsigned char) ((source[0] * alpha) / 255);
*target++ = (unsigned char) alpha; *target++ = (unsigned char) alpha;
}
} }
buffer = buffer =
wl_shm_pool_create_buffer(pool, 0, wl_shm_pool_create_buffer(pool, 0,
image->width, image->width,
image->height, image->height,
stride, WL_SHM_FORMAT_ARGB8888); stride, is_opaque ? WL_SHM_FORMAT_XRGB8888 : WL_SHM_FORMAT_ARGB8888);
munmap(data, length); munmap(data, length);
wl_shm_pool_destroy(pool); wl_shm_pool_destroy(pool);
return buffer; return buffer;
} }
static void static void
setCursorImage(_GLFWwindow* window, bool on_theme_change) { setCursorImage(_GLFWwindow* window, bool on_theme_change) {
_GLFWcursorWayland defaultCursor = {.shape = GLFW_ARROW_CURSOR}; _GLFWcursorWayland defaultCursor = {.shape = GLFW_ARROW_CURSOR};
@ -279,12 +282,10 @@ static void dispatchChangesAfterConfigure(_GLFWwindow *window, int32_t width, in
static void createDecoration(_GLFWdecorationWayland* decoration, static void createDecoration(_GLFWdecorationWayland* decoration,
struct wl_surface* parent, struct wl_surface* parent,
struct wl_buffer* buffer, bool opaque, struct wl_buffer* buffer,
int x, int y, int x, int y,
int width, int height) int width, int height)
{ {
struct wl_region* region;
decoration->surface = wl_compositor_create_surface(_glfw.wl.compositor); decoration->surface = wl_compositor_create_surface(_glfw.wl.compositor);
decoration->subsurface = decoration->subsurface =
wl_subcompositor_get_subsurface(_glfw.wl.subcompositor, wl_subcompositor_get_subsurface(_glfw.wl.subcompositor,
@ -294,47 +295,37 @@ static void createDecoration(_GLFWdecorationWayland* decoration,
decoration->surface); decoration->surface);
wp_viewport_set_destination(decoration->viewport, width, height); wp_viewport_set_destination(decoration->viewport, width, height);
wl_surface_attach(decoration->surface, buffer, 0, 0); wl_surface_attach(decoration->surface, buffer, 0, 0);
wl_surface_commit(decoration->surface);
if (opaque)
{
region = wl_compositor_create_region(_glfw.wl.compositor);
wl_region_add(region, 0, 0, width, height);
wl_surface_set_opaque_region(decoration->surface, region);
wl_surface_commit(decoration->surface);
wl_region_destroy(region);
}
else
wl_surface_commit(decoration->surface);
} }
static void createDecorations(_GLFWwindow* window) static void createDecorations(_GLFWwindow* window)
{ {
unsigned char data[] = { 224, 224, 224, 255 }; unsigned char data[] = { 224, 224, 224, 255 };
const GLFWimage image = { 1, 1, data }; const GLFWimage image = { 1, 1, data };
bool opaque = (data[3] == 255); bool is_opaque = (data[3] == 255);
if (!_glfw.wl.viewporter || !window->decorated || window->wl.decorations.serverSide) if (!_glfw.wl.viewporter || !window->decorated || window->wl.decorations.serverSide)
return; return;
if (!window->wl.decorations.edge_buffer) if (!window->wl.decorations.edge_buffer)
window->wl.decorations.edge_buffer = createShmBuffer(&image); window->wl.decorations.edge_buffer = createShmBuffer(&image, is_opaque, true);
if (!window->wl.decorations.edge_buffer) if (!window->wl.decorations.edge_buffer)
return; return;
createDecoration(&window->wl.decorations.top, window->wl.surface, createDecoration(&window->wl.decorations.top, window->wl.surface,
window->wl.decorations.edge_buffer, opaque, window->wl.decorations.edge_buffer,
0, -window->wl.decoration_metrics.top, 0, -window->wl.decoration_metrics.top,
window->wl.width, window->wl.decoration_metrics.top); window->wl.width, window->wl.decoration_metrics.top);
createDecoration(&window->wl.decorations.left, window->wl.surface, createDecoration(&window->wl.decorations.left, window->wl.surface,
window->wl.decorations.edge_buffer, opaque, window->wl.decorations.edge_buffer,
-window->wl.decoration_metrics.width, -window->wl.decoration_metrics.top, -window->wl.decoration_metrics.width, -window->wl.decoration_metrics.top,
window->wl.decoration_metrics.width, window->wl.height + window->wl.decoration_metrics.top); window->wl.decoration_metrics.width, window->wl.height + window->wl.decoration_metrics.top);
createDecoration(&window->wl.decorations.right, window->wl.surface, createDecoration(&window->wl.decorations.right, window->wl.surface,
window->wl.decorations.edge_buffer, opaque, window->wl.decorations.edge_buffer,
window->wl.width, -window->wl.decoration_metrics.top, window->wl.width, -window->wl.decoration_metrics.top,
window->wl.decoration_metrics.width, window->wl.height + window->wl.decoration_metrics.top); window->wl.decoration_metrics.width, window->wl.height + window->wl.decoration_metrics.top);
createDecoration(&window->wl.decorations.bottom, window->wl.surface, createDecoration(&window->wl.decorations.bottom, window->wl.surface,
window->wl.decorations.edge_buffer, opaque, window->wl.decorations.edge_buffer,
-window->wl.decoration_metrics.width, window->wl.height, -window->wl.decoration_metrics.width, window->wl.height,
window->wl.width + window->wl.decoration_metrics.horizontal, window->wl.decoration_metrics.width); window->wl.width + window->wl.decoration_metrics.horizontal, window->wl.decoration_metrics.width);
} }
@ -1293,7 +1284,7 @@ int _glfwPlatformCreateCursor(_GLFWcursor* cursor,
const GLFWimage* image, const GLFWimage* image,
int xhot, int yhot, int count UNUSED) int xhot, int yhot, int count UNUSED)
{ {
cursor->wl.buffer = createShmBuffer(image); cursor->wl.buffer = createShmBuffer(image, false, true);
if (!cursor->wl.buffer) if (!cursor->wl.buffer)
return false; return false;