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Fix #126.

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Warning: Korlib C API change. Version bumped.
This commit is contained in:
Adam Johnson
2019-10-25 11:39:19 -04:00
parent d999a7ba1f
commit 3897dfa1c2
5 changed files with 49 additions and 29 deletions
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23
korlib/texture.cpp
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@ -195,6 +195,12 @@ enum {
TEX_DETAIL_MULTIPLY = 2,
};
enum {
kOpaque = 0,
kOnOff = 1,
kFull = 2,
};
typedef struct {
PyObject_HEAD
PyObject* m_blenderImage;
@ -476,12 +482,19 @@ static PyMethodDef pyGLTexture_Methods[] = {
static PyObject* pyGLTexture_get_has_alpha(pyGLTexture* self, void*) {
char* data = PyBytes_AsString(self->m_imageData);
size_t bufsz = self->m_width * self->m_height * sizeof(uint32_t);
for (size_t i = 3; i < bufsz; i += 4) {
if (data[i] != 255) {
return PyBool_FromLong(1);
}
bool transparency = false;
uint32_t* datap = reinterpret_cast<uint32_t*>(data);
uint32_t* endp = reinterpret_cast<uint32_t*>(data + bufsz);
while (datap < endp) {
uint8_t alpha = ((*datap & 0xFF000000) >> 24);
if (alpha == 0x00)
transparency = true;
else if (alpha != 0xFF)
return PyLong_FromLong(kFull);
datap++;
}
return PyBool_FromLong(0);
return PyLong_FromLong(transparency ? kOnOff : kOpaque);
}
static PyObject* pyGLTexture_get_image_data(pyGLTexture* self, void*) {