maxwell_to_gl: Use GL_CLAMP to emulate Clamp wrap mode

src/video_core/renderer_opengl/maxwell_to_gl.h

@@ -175,11 +175,8 @@ inline GLenum WrapMode(Tegra::Texture::WrapMode wrap_mode) {
         return GL_CLAMP_TO_EDGE;
     case Tegra::Texture::WrapMode::Border:
         return GL_CLAMP_TO_BORDER;
-    case Tegra::Texture::WrapMode::ClampOGL:
-        // TODO(Subv): GL_CLAMP was removed as of OpenGL 3.1, to implement GL_CLAMP, we can use
-        // GL_CLAMP_TO_BORDER to get the border color of the texture, and then sample the edge to
-        // manually mix them. However the shader part of this is not yet implemented.
-        return GL_CLAMP_TO_BORDER;
+    case Tegra::Texture::WrapMode::Clamp:
+        return GL_CLAMP;
     case Tegra::Texture::WrapMode::MirrorOnceClampToEdge:
         return GL_MIRROR_CLAMP_TO_EDGE;
     case Tegra::Texture::WrapMode::MirrorOnceBorder:

src/video_core/renderer_vulkan/maxwell_to_vk.cpp

@@ -52,7 +52,7 @@ vk::SamplerAddressMode WrapMode(Tegra::Texture::WrapMode wrap_mode) {
         return vk::SamplerAddressMode::eClampToEdge;
     case Tegra::Texture::WrapMode::Border:
         return vk::SamplerAddressMode::eClampToBorder;
-    case Tegra::Texture::WrapMode::ClampOGL:
+    case Tegra::Texture::WrapMode::Clamp:
         // TODO(Rodrigo): GL_CLAMP was removed as of OpenGL 3.1, to implement GL_CLAMP, we can use
         // eClampToBorder to get the border color of the texture, and then sample the edge to
         // manually mix them. However the shader part of this is not yet implemented.

src/video_core/textures/texture.h

@@ -251,7 +251,7 @@ enum class WrapMode : u32 {
     Mirror = 1,
     ClampToEdge = 2,
     Border = 3,
-    ClampOGL = 4,
+    Clamp = 4,
     MirrorOnceClampToEdge = 5,
     MirrorOnceBorder = 6,
     MirrorOnceClampOGL = 7,