video_core: use nested namespaces

src/video_core/texture/etc1.cpp

@@ -10,8 +10,7 @@
 #include "common/vector_math.h"
 #include "video_core/texture/etc1.h"
 
-namespace Pica {
-namespace Texture {
+namespace Pica::Texture {
 
 namespace {
 
@@ -125,5 +124,4 @@ Math::Vec3<u8> SampleETC1Subtile(u64 value, unsigned int x, unsigned int y) {
     return tile.GetRGB(x, y);
 }
 
-} // namespace Texture
-} // namespace Pica
+} // namespace Pica::Texture

src/video_core/texture/etc1.h

@@ -7,10 +7,8 @@
 #include "common/common_types.h"
 #include "common/vector_math.h"
 
-namespace Pica {
-namespace Texture {
+namespace Pica::Texture {
 
 Math::Vec3<u8> SampleETC1Subtile(u64 value, unsigned int x, unsigned int y);
 
-} // namespace Texture
-} // namespace Pica
+} // namespace Pica::Texture

src/video_core/texture/texture_decode.cpp

@@ -15,8 +15,7 @@
 
 using TextureFormat = Pica::TexturingRegs::TextureFormat;
 
-namespace Pica {
-namespace Texture {
+namespace Pica::Texture {
 
 constexpr std::size_t TILE_SIZE = 8 * 8;
 constexpr std::size_t ETC1_SUBTILES = 2 * 2;
@@ -223,5 +222,4 @@ TextureInfo TextureInfo::FromPicaRegister(const TexturingRegs::TextureConfig& co
     return info;
 }
 
-} // namespace Texture
-} // namespace Pica
+} // namespace Pica::Texture

src/video_core/texture/texture_decode.h

@@ -8,8 +8,7 @@
 #include "common/vector_math.h"
 #include "video_core/regs_texturing.h"
 
-namespace Pica {
-namespace Texture {
+namespace Pica::Texture {
 
 /// Returns the byte size of a 8*8 tile of the specified texture format.
 size_t CalculateTileSize(TexturingRegs::TextureFormat format);
@@ -56,5 +55,4 @@ Math::Vec4<u8> LookupTexture(const u8* source, unsigned int x, unsigned int y,
 Math::Vec4<u8> LookupTexelInTile(const u8* source, unsigned int x, unsigned int y,
                                  const TextureInfo& info, bool disable_alpha);
 
-} // namespace Texture
-} // namespace Pica
+} // namespace Pica::Texture