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Wayland: Clean up shared memory buffer creation

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(cherry picked from commit 7cc8b053b8)
This commit is contained in:
Camilla Löwy 2022-07-15 12:50:18 +02:00
parent 2ca3bda1cc
commit b08271d315
1 changed files with 8 additions and 11 deletions
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19
src/wl_window.c
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@ -136,14 +136,10 @@ static int createAnonymousFile(off_t size)
static struct wl_buffer* createShmBuffer(const GLFWimage* image)
{
struct wl_shm_pool* pool;
struct wl_buffer* buffer;
int stride = image->width * 4;
int length = image->width * image->height * 4;
void* data;
int fd, i;
const int stride = image->width * 4;
const int length = image->width * image->height * 4;
fd = createAnonymousFile(length);
const int fd = createAnonymousFile(length);
if (fd < 0)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
@ -152,7 +148,7 @@ static struct wl_buffer* createShmBuffer(const GLFWimage* image)
return NULL;
}
data = mmap(NULL, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
void* data = mmap(NULL, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (data == MAP_FAILED)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
@ -161,12 +157,13 @@ static struct wl_buffer* createShmBuffer(const GLFWimage* image)
return NULL;
}
pool = wl_shm_create_pool(_glfw.wl.shm, fd, length);
struct wl_shm_pool* pool = wl_shm_create_pool(_glfw.wl.shm, fd, length);
close(fd);
unsigned char* source = (unsigned char*) image->pixels;
unsigned char* target = data;
for (i = 0; i < image->width * image->height; i++, source += 4)
for (int i = 0; i < image->width * image->height; i++, source += 4)
{
unsigned int alpha = source[3];
@ -176,7 +173,7 @@ static struct wl_buffer* createShmBuffer(const GLFWimage* image)
*target++ = (unsigned char) alpha;
}
buffer =
struct wl_buffer* buffer =
wl_shm_pool_create_buffer(pool, 0,
image->width,
image->height,