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calculate the correct number of mipmap textures

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This commit is contained in:
Ian Curtis 2017-03-24 16:51:52 +00:00
parent 17f878421b
commit 82ac030dff
1 changed files with 12 additions and 2 deletions
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14
Src/Graphics/New3D/Texture.cpp
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@ -1,6 +1,7 @@
#include "Texture.h"
#include <stdio.h>
#include <math.h>
#include <algorithm>
namespace New3D {
@ -294,7 +295,7 @@ UINT32 Texture::UploadTexture(const UINT16* src, UINT8* scratch, int format, boo
y -= (page * 1024); // remove page from tex y
for (int i = 0; i < 6; i++) {
for (int i = 0; width >= 8 && height >= 8; i++) {
int xPos = mipXBase[i] + (x / mipDivisor[i]);
int yPos = mipYBase[i] + (y / mipDivisor[i]);
@ -358,8 +359,17 @@ void Texture::CreateTextureObject(int format, bool mirrorU, bool mirrorV, int x,
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, maxAnistrophy);
int maxD = std::min(width, height);
int count = 0;
while (maxD > 8) {
maxD /= 2;
count++;
}
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 5); // 0-5 (real3d only uses 6 possible mipmap levels)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, count); // 0-5 (real3d only uses 6 possible mipmap levels)
m_x = x;
m_y = y;