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Fix skybox generation with non square textures

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This commit is contained in:
Vlj 2014-08-15 02:10:49 +02:00
parent 0a95344a01
commit 647a5d6990
1 changed files with 13 additions and 13 deletions
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26
src/graphics/render_skybox.cpp
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@ -378,7 +378,7 @@ static void testSH(unsigned char *color[6], size_t width, size_t height,
}
}
static void swapPixels(char *old_img, char *new_img, unsigned stride, unsigned old_i, unsigned old_j, unsigned new_i, unsigned new_j)
void swapPixels(char *old_img, char *new_img, unsigned stride, unsigned old_i, unsigned old_j, unsigned new_i, unsigned new_j)
{
new_img[4 * (stride * new_i + new_j)] = old_img[4 * (stride * old_i + old_j)];
new_img[4 * (stride * new_i + new_j) + 1] = old_img[4 * (stride * old_i + old_j) + 1];
@ -403,17 +403,17 @@ GLuint generateCubeMapFromTextures(const std::vector<video::ITexture *> &texture
GLuint result;
glGenTextures(1, &result);
unsigned w = 0, h = 0;
unsigned size = 0;
for (unsigned i = 0; i < 6; i++)
{
w = MAX2(w, textures[i]->getOriginalSize().Width);
h = MAX2(h, textures[i]->getOriginalSize().Height);
size = MAX2(size, textures[i]->getOriginalSize().Width);
size = MAX2(size, textures[i]->getOriginalSize().Height);
}
const unsigned texture_permutation[] = { 2, 3, 0, 1, 5, 4 };
char *rgba[6];
for (unsigned i = 0; i < 6; i++)
rgba[i] = new char[w * h * 4];
rgba[i] = new char[size * size * 4];
for (unsigned i = 0; i < 6; i++)
{
unsigned idx = texture_permutation[i];
@ -426,27 +426,27 @@ GLuint generateCubeMapFromTextures(const std::vector<video::ITexture *> &texture
);
textures[idx]->unlock();
image->copyToScaling(rgba[i], w, h);
image->copyToScaling(rgba[i], size, size);
image->drop();
if (i == 2 || i == 3)
{
char *tmp = new char[w * h * 4];
memcpy(tmp, rgba[i], w * h * 4);
for (unsigned x = 0; x < w; x++)
char *tmp = new char[size * size * 4];
memcpy(tmp, rgba[i], size * size * 4);
for (unsigned x = 0; x < size; x++)
{
for (unsigned y = 0; y < h; y++)
for (unsigned y = 0; y < size; y++)
{
swapPixels(tmp, rgba[i], h, x, y, (w - y - 1), x);
swapPixels(tmp, rgba[i], size, x, y, (size - y - 1), x);
}
}
}
glBindTexture(GL_TEXTURE_CUBE_MAP, result);
if (UserConfigParams::m_texture_compression)
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_COMPRESSED_SRGB_ALPHA, w, h, 0, GL_BGRA, GL_UNSIGNED_BYTE, (GLvoid*)rgba[i]);
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_COMPRESSED_SRGB_ALPHA, size, size, 0, GL_BGRA, GL_UNSIGNED_BYTE, (GLvoid*)rgba[i]);
else
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_SRGB_ALPHA, w, h, 0, GL_BGRA, GL_UNSIGNED_BYTE, (GLvoid*)rgba[i]);
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_SRGB_ALPHA, size, size, 0, GL_BGRA, GL_UNSIGNED_BYTE, (GLvoid*)rgba[i]);
}
for (unsigned i = 0; i < 6; i++)
delete[] rgba[i];