Add OpenGLSampler

engine/include/XCEngine/RHI/OpenGL/OpenGLSampler.h

@@ -0,0 +1,61 @@
+#pragma once
+
+#include <GLFW/glfw3.h>
+
+namespace XCEngine {
+namespace RHI {
+
+enum class SamplerWrapMode {
+    Repeat,
+    MirroredRepeat,
+    ClampToEdge,
+    ClampToBorder
+};
+
+enum class SamplerFilter {
+    Nearest,
+    Linear,
+    NearestMipmapNearest,
+    LinearMipmapNearest,
+    NearestMipmapLinear,
+    LinearMipmapLinear
+};
+
+enum class SamplerCompareMode {
+    None,
+    CompareToRef
+};
+
+struct SamplerDesc {
+    SamplerFilter minFilter = SamplerFilter::LinearMipmapLinear;
+    SamplerFilter magFilter = SamplerFilter::Linear;
+    SamplerWrapMode wrapS = SamplerWrapMode::Repeat;
+    SamplerWrapMode wrapT = SamplerWrapMode::Repeat;
+    SamplerWrapMode wrapR = SamplerWrapMode::Repeat;
+    SamplerCompareMode compareMode = SamplerCompareMode::None;
+    int compareFunc = 0;
+    float maxAnisotropy = 1.0f;
+    float minLod = -1000.0f;
+    float maxLod = 1000.0f;
+};
+
+class OpenGLSampler {
+public:
+    OpenGLSampler();
+    ~OpenGLSampler();
+
+    bool Initialize(const SamplerDesc& desc);
+    void Shutdown();
+
+    void Bind(unsigned int unit);
+    void Unbind(unsigned int unit);
+
+    unsigned int GetID() const { return m_sampler; }
+
+private:
+    unsigned int m_sampler;
+    SamplerDesc m_desc;
+};
+
+} // namespace RHI
+} // namespace XCEngine