Add FBufferedUniformSampler because sampler uniforms may default bind to other locations than zero

src/gl/shaders/gl_bloomshader.h

@@ -8,7 +8,7 @@ class FBloomExtractShader
 public:
 	void Bind();
 
-	FBufferedUniform1i SceneTexture;
+	FBufferedUniformSampler SceneTexture;
 	FBufferedUniform1f Exposure;
 	FBufferedUniform2f Scale;
 	FBufferedUniform2f Offset;
@@ -22,7 +22,7 @@ class FBloomCombineShader
 public:
 	void Bind();
 
-	FBufferedUniform1i BloomTexture;
+	FBufferedUniformSampler BloomTexture;
 
 private:
 	FShaderProgram mShader;

src/gl/shaders/gl_lensshader.h

@@ -8,7 +8,7 @@ class FLensShader
 public:
 	void Bind();
 
-	FBufferedUniform1i InputTexture;
+	FBufferedUniformSampler InputTexture;
 	FBufferedUniform1f AspectRatio;
 	FBufferedUniform1f Scale;
 	FBufferedUniform4f LensDistortionCoefficient;

src/gl/shaders/gl_presentshader.h

@@ -8,7 +8,7 @@ class FPresentShader
 public:
 	void Bind();
 
-	FBufferedUniform1i InputTexture;
+	FBufferedUniformSampler InputTexture;
 	FBufferedUniform1f InvGamma;
 	FBufferedUniform1f Contrast;
 	FBufferedUniform1f Brightness;

src/gl/shaders/gl_shader.h

@@ -201,6 +201,28 @@ public:
 	}
 };
 
+class FBufferedUniformSampler
+{
+	int mBuffer;
+	int mIndex;
+
+public:
+	void Init(GLuint hShader, const GLchar *name)
+	{
+		mIndex = glGetUniformLocation(hShader, name);
+		mBuffer = -1;
+	}
+
+	void Set(int newvalue)
+	{
+		if (newvalue != mBuffer)
+		{
+			mBuffer = newvalue;
+			glUniform1i(mIndex, newvalue);
+		}
+	}
+};
+
 
 class FShader
 {

src/gl/shaders/gl_tonemapshader.h

@@ -8,9 +8,9 @@ class FTonemapShader
 public:
 	void Bind();
 
-	FBufferedUniform1i SceneTexture;
+	FBufferedUniformSampler SceneTexture;
 	FBufferedUniform1f Exposure;
-	FBufferedUniform1i PaletteLUT;
+	FBufferedUniformSampler PaletteLUT;
 
 	static bool IsPaletteMode();