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Implement cubemap export

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This commit is contained in:
Adam Johnson
2018-12-10 00:39:05 -05:00
parent 035d79a7f6
commit 4a48f0da8d
5 changed files with 210 additions and 30 deletions
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52
korlib/texture.cpp
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@ -28,6 +28,8 @@
#define TEXTARGET_TEXTURE_2D 0
// ===============================================================================================
static inline void _ensure_copy_bytes(PyObject* parent, PyObject*& data) {
// PyBytes objects are immutable and ought not to be changed once they are returned to Python
// code. Therefore, this tests to see if the given bytes object is the same as one we're holding.
@ -157,6 +159,33 @@ static void _scale_image(const uint8_t* srcBuf, const size_t srcW, const size_t
}
}
// ===============================================================================================
PyObject* scale_image(PyObject*, PyObject* args, PyObject* kwargs) {
static char* kwlist[] = { _pycs("buf"), _pycs("srcW"), _pycs("srcH"),
_pycs("dstW"), _pycs("dstH"), NULL };
const uint8_t* srcBuf;
int srcBufSz;
uint32_t srcW, srcH, dstW, dstH;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "y#IIII", kwlist, &srcBuf, &srcBufSz, &srcW, &srcH, &dstW, &dstH)) {
PyErr_SetString(PyExc_TypeError, "scale_image expects a bytes object, int, int, int int");
return NULL;
}
int expectedBufSz = srcW * srcH * sizeof(uint32_t);
if (srcBufSz != expectedBufSz) {
PyErr_Format(PyExc_ValueError, "buf size (%i bytes) incorrect (expected: %i bytes)", srcBufSz, expectedBufSz);
return NULL;
}
PyObject* dst = PyBytes_FromStringAndSize(NULL, dstW * dstH * sizeof(uint32_t));
uint8_t* dstBuf = reinterpret_cast<uint8_t*>(PyBytes_AS_STRING(dst));
_scale_image(srcBuf, srcW, srcH, dstBuf, dstW, dstH);
return dst;
}
// ===============================================================================================
enum {
TEX_DETAIL_ALPHA = 0,
TEX_DETAIL_ADD = 1,
@ -180,6 +209,8 @@ typedef struct {
bool fPyOwned;
} pyMipmap;
// ===============================================================================================
static void pyGLTexture_dealloc(pyGLTexture* self) {
Py_CLEAR(self->m_textureKey);
Py_CLEAR(self->m_blenderImage);
@ -445,6 +476,26 @@ static PyObject* pyGLTexture_get_has_alpha(pyGLTexture* self, void*) {
return PyBool_FromLong(0);
}
static PyObject* pyGLTexture_get_image_data(pyGLTexture* self, void*) {
Py_XINCREF(self->m_imageData);
return Py_BuildValue("iiO", self->m_width, self->m_height, self->m_imageData);
}
static int pyGLTexture_set_image_data(pyGLTexture* self, PyObject* value, void*) {
PyObject* data;
// Requesting a Bytes object "S" instead of a buffer "y#" so we can just increment the reference
// count on a buffer that already exists, instead of doing a memcpy.
if (!PyArg_ParseTuple(value, "iiS", &self->m_width, &self->m_height, &data)) {
PyErr_SetString(PyExc_TypeError, "image_data should be a sequence of int, int, bytes");
return -1;
}
Py_XDECREF(self->m_imageData);
Py_XINCREF(data);
self->m_imageData = data;
return 0;
}
static PyObject* pyGLTexture_get_num_levels(pyGLTexture* self, void*) {
return PyLong_FromLong(_get_num_levels(self->m_width, self->m_height));
}
@ -461,6 +512,7 @@ static PyObject* pyGLTexture_get_size_pot(pyGLTexture* self, void*) {
static PyGetSetDef pyGLTexture_GetSet[] = {
{ _pycs("has_alpha"), (getter)pyGLTexture_get_has_alpha, NULL, NULL, NULL },
{ _pycs("image_data"), (getter)pyGLTexture_get_image_data, (setter)pyGLTexture_set_image_data, NULL, NULL },
{ _pycs("num_levels"), (getter)pyGLTexture_get_num_levels, NULL, NULL, NULL },
{ _pycs("size_npot"), (getter)pyGLTexture_get_size_npot, NULL, NULL, NULL },
{ _pycs("size_pot"), (getter)pyGLTexture_get_size_pot, NULL, NULL, NULL },