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feat: implement multi-layer texture binding

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This commit is contained in:
daoge_cmd
2026-03-03 21:20:10 +08:00
parent 5422191ed4
commit d2bc3342dc
12 changed files with 38 additions and 12 deletions
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36
Minecraft.Client/glWrapper.cpp
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@@ -3,6 +3,17 @@
#include "..\Minecraft.World\IntBuffer.h"
#include "..\Minecraft.World\ByteBuffer.h"
static int g_activeTextureLayer = 0;
static int getTextureLayer(int textureUnit)
{
if (textureUnit == GL_TEXTURE1)
return 1;
if (textureUnit >= GL_TEXTURE0)
return textureUnit - GL_TEXTURE0;
return 0;
}
void glViewport(int x, int y, int w, int h)
{
// We don't really need anything here because minecraft doesn't current do anything other than the default viewport
@@ -139,7 +150,7 @@ void Display::swapBuffers()
void glBindTexture(int target,int texture)
{
RenderManager.TextureBind(texture);
RenderManager.TextureBind(g_activeTextureLayer, texture);
}
void glTexImage2D(int target,int level,int internalformat,int width,int height,int border,int format,int type, ByteBuffer *data)
@@ -190,7 +201,7 @@ void glDisable(int state)
switch(state)
{
case GL_TEXTURE_2D:
RenderManager.TextureBind(-1);
RenderManager.TextureBind(g_activeTextureLayer, -1);
break;
case GL_BLEND:
RenderManager.StateSetBlendEnable(false);
@@ -390,4 +401,23 @@ void glTexGen(int coord, int mode, FloatBuffer *vec)
void glCullFace(int dir)
{
RenderManager.StateSetFaceCullCW( dir == GL_BACK);
}
}
void glClientActiveTexture(int texture)
{
glActiveTexture(texture);
}
void glActiveTexture(int texture)
{
int layer = getTextureLayer(texture);
if (layer < 0)
{
layer = 0;
}
else if (layer > 3)
{
layer = 3;
}
g_activeTextureLayer = layer;
}