Add a mini C filesystem wrapper library with mmap support

1 files changed, 7 insertions, 11 deletions

diff --git a/gfx/models/texture.cpp b/gfx/models/texture.cpp
index 5b8d376..6019bec 100644
--- a/gfx/models/texture.cpp
+++ b/gfx/models/texture.cpp
@@ -3,6 +3,7 @@
 #include <GL/glew.h>

 #include <cache.h>

 #include <fcntl.h>

+#include <filesystem.h>

 #include <gfx/image.h>

 #include <glm/geometric.hpp>

 #include <resource.h>

@@ -50,18 +51,13 @@ Texture::save(const glTexture & texture, GLenum format, const glm::ivec2 & size,
 	size_t dataSize = (static_cast<size_t>(size.x * size.y * channels));

 	size_t fileSize = dataSize + sizeof(TGAHead);

 

-	auto out = open(path, O_RDWR | O_CREAT, 0660);

-	std::ignore = ftruncate(out, static_cast<off_t>(fileSize));

-	TGAHead * tga = static_cast<TGAHead *>(mmap(nullptr, fileSize, PROT_WRITE, MAP_SHARED, out, 0));

-	close(out);

-	if (tga == MAP_FAILED) {

-		return;

-	}

-	*tga = {0, tgaFormat, 0, 0, 0, 0, static_cast<short>(size.x), static_cast<short>(size.y),

+	filesystem::fh out {path, O_RDWR | O_CREAT, 0660};

+	out.truncate(fileSize);

+	auto tga = out.mmap(fileSize, 0, PROT_WRITE, MAP_SHARED);

+	*tga.get<TGAHead>() = {0, tgaFormat, 0, 0, 0, 0, static_cast<short>(size.x), static_cast<short>(size.y),

 			static_cast<short>(8 * channels)};

-	glGetTextureImage(texture, 0, format, GL_UNSIGNED_BYTE, static_cast<GLsizei>(dataSize), tga + 1);

-	msync(tga, fileSize, MS_ASYNC);

-	munmap(tga, fileSize);

+	glGetTextureImage(texture, 0, format, GL_UNSIGNED_BYTE, static_cast<GLsizei>(dataSize), tga.get<TGAHead>() + 1);

+	tga.msync(MS_ASYNC);

 }

 

 void