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Split shm buffer creation out of _glfwPlatformCreateCursor

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This commit is contained in:
Emmanuel Gil Peyrot 2017-12-19 17:25:00 +01:00 committed by linkmauve
parent 2de3605b4c
commit 9a7656364e
1 changed files with 54 additions and 47 deletions
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101
src/wl_window.c
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@ -552,6 +552,59 @@ createAnonymousFile(off_t size)
return fd;
}
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;
fd = createAnonymousFile(length);
if (fd < 0)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Creating a buffer file for %d B failed: %m",
length);
return GLFW_FALSE;
}
data = mmap(NULL, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (data == MAP_FAILED)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Cursor mmap failed: %m");
close(fd);
return GLFW_FALSE;
}
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)
{
unsigned int alpha = source[3];
*target++ = (unsigned char) ((source[2] * alpha) / 255);
*target++ = (unsigned char) ((source[1] * alpha) / 255);
*target++ = (unsigned char) ((source[0] * alpha) / 255);
*target++ = (unsigned char) alpha;
}
buffer =
wl_shm_pool_create_buffer(pool, 0,
image->width,
image->height,
stride, WL_SHM_FORMAT_ARGB8888);
munmap(data, length);
wl_shm_pool_destroy(pool);
return buffer;
}
// Translates a GLFW standard cursor to a theme cursor name
//
static char *translateCursorShape(int shape)
@ -1041,53 +1094,7 @@ int _glfwPlatformCreateCursor(_GLFWcursor* cursor,
const GLFWimage* image,
int xhot, int yhot)
{
struct wl_shm_pool* pool;
int stride = image->width * 4;
int length = image->width * image->height * 4;
void* data;
int fd, i;
fd = createAnonymousFile(length);
if (fd < 0)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Creating a buffer file for %d B failed: %m",
length);
return GLFW_FALSE;
}
data = mmap(NULL, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (data == MAP_FAILED)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Cursor mmap failed: %m");
close(fd);
return GLFW_FALSE;
}
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)
{
unsigned int alpha = source[3];
*target++ = (unsigned char) ((source[2] * alpha) / 255);
*target++ = (unsigned char) ((source[1] * alpha) / 255);
*target++ = (unsigned char) ((source[0] * alpha) / 255);
*target++ = (unsigned char) alpha;
}
cursor->wl.buffer =
wl_shm_pool_create_buffer(pool, 0,
image->width,
image->height,
stride, WL_SHM_FORMAT_ARGB8888);
munmap(data, length);
wl_shm_pool_destroy(pool);
cursor->wl.buffer = createShmBuffer(image);
cursor->wl.width = image->width;
cursor->wl.height = image->height;
cursor->wl.xhot = xhot;