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/* This file is part of Korman.
*
* Korman is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Korman is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Korman. If not, see <http://www.gnu.org/licenses/>.
*/
#include "bumpmap.h"
#include <PRP/Surface/plMipmap.h>
static uint32_t MakeUInt32Color(float r, float g, float b, float a) {
return (uint32_t(a * 255.9f) << 24) |
(uint32_t(r * 255.9f) << 16) |
(uint32_t(g * 255.9f) << 8) |
(uint32_t(b * 255.9f) << 0);
}
typedef struct {
PyObject_HEAD
plMipmap* fThis;
bool fPyOwned;
} pyMipmap;
extern "C" {
PyObject* create_bump_LUT(PyObject*, PyObject* args) {
const int kLUTHeight = 16;
const int kLUTWidth = 16;
pyMipmap* pymipmap;
if (!PyArg_ParseTuple(args, "O", &pymipmap)) {
PyErr_SetString(PyExc_TypeError, "create_bump_LUT expects a plMipmap");
return NULL;
}
plMipmap* texture = plMipmap::Convert(pymipmap->fThis, false);
if (!texture) {
PyErr_SetString(PyExc_TypeError, "create_bump_LUT expects a plMipmap");
return NULL;
}
texture->Create(kLUTWidth, kLUTHeight, 1, plBitmap::kUncompressed, plBitmap::kRGB8888);
int delH = (kLUTHeight - 1) / 5;
int startH = delH / 2 + 1;
int doneH = 0;
uint8_t* data = new uint8_t[texture->getTotalSize()];
uint32_t* pix = (uint32_t*)data;
int i;
// Red ramps, one with G,B = 0,0, one with G,B = 127,127
for (i = 0; i < startH; ++i) {
for(int j = 0; j < kLUTWidth; ++j) {
float x = float(j) / (kLUTWidth - 1);
*pix++ = MakeUInt32Color(x, 0.0f, 0.0f, 1.0f);
}
}
doneH = i;
for (i = i; i < doneH + delH; ++i) {
for (int j = 0; j < kLUTWidth; ++j) {
float x = float(j) / (kLUTWidth - 1);
*pix++ = MakeUInt32Color(x, 0.5f, 0.5f, 1.0f);
}
}
doneH = i;
// Green ramps, one with R,B = 0,0, one with R,B = 127,127
for (i = i; i < doneH + delH; ++i) {
for (int j = 0; j < kLUTWidth; ++j) {
float x = float(j) / (kLUTWidth - 1);
*pix++ = MakeUInt32Color(0.0f, x, 0.0f, 1.0f);
}
}
doneH = i;
for (i = i; i < doneH + delH; ++i) {
for (int j = 0; j < kLUTWidth; ++j) {
float x = float(j) / (kLUTWidth - 1);
*pix++ = MakeUInt32Color(0.5f, x, 0.5f, 1.0f);
}
}
doneH = i;
// Blue ramps, one with R,G = 0,0, one with R,G = 127,127
for (i = i; i < doneH + delH; ++i) {
for (int j = 0; j < kLUTWidth; ++j) {
float x = float(j) / (kLUTWidth - 1);
*pix++ = MakeUInt32Color(0.0f, 0.0f, x, 1.0f);
}
}
doneH = i;
for (i = i; i < kLUTHeight; ++i) {
for (int j = 0; j < kLUTWidth; ++j) {
float x = float(j) / (kLUTWidth - 1);
*pix++ = MakeUInt32Color(0.5f, 0.5f, x, 1.0f);
}
}
texture->setImageData(data, texture->getTotalSize());
Py_RETURN_NONE;
}
};