Add scaling option for texture, allow nearest neighbour scaling

2 files changed, 10 insertions, 2 deletions

diff --git a/include/mgl/gl_macro.h b/include/mgl/gl_macro.h
index 07ce1c4..574a3d8 100644
--- a/include/mgl/gl_macro.h
+++ b/include/mgl/gl_macro.h
@@ -48,6 +48,7 @@
 #define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3
 
 #define GL_CLAMP_TO_EDGE 0x812F
+#define GL_NEAREST 0x2600
 #define GL_LINEAR 0x2601
 #define GL_LINEAR_MIPMAP_LINEAR 0x2703
 
diff --git a/include/mgl/graphics/texture.h b/include/mgl/graphics/texture.h
index d65adee..b658daf 100644
--- a/include/mgl/graphics/texture.h
+++ b/include/mgl/graphics/texture.h
@@ -14,6 +14,12 @@ typedef enum {
     MGL_TEXTURE_FORMAT_RGBA
 } mgl_texture_format;
 
+typedef enum {
+    MGL_TEXTURE_SCALE_NEAREST,
+    MGL_TEXTURE_SCALE_LINEAR,
+    MGL_TEXTURE_SCALE_LINEAR_MIPMAP /* generate mipmaps (available since opengl 3.0) */
+} mgl_texture_scale_type;
+
 struct mgl_texture {
     unsigned int id;
     int width;
@@ -22,18 +28,19 @@ struct mgl_texture {
     int max_width;
     int max_height;
     bool pixel_coordinates;
-    bool mipmap;
+    mgl_texture_scale_type scale_type;
     bool owned;
 };
 
 typedef struct {
     bool compressed; /* false by default */
     bool pixel_coordinates; /* false by default, texture coordinates are normalized */
-    bool mipmap; /* false by default, generate mipmaps (available since opengl 3.0) */
+    mgl_texture_scale_type scale_type; /* MGL_TEXTURE_SCALE_LINEAR by default */
 } mgl_texture_load_options;
 
 typedef struct {
     bool pixel_coordinates; /* false by default, texture coordinates are normalized */
+    mgl_texture_scale_type scale_type; /* MGL_TEXTURE_SCALE_LINEAR by default */
 } mgl_texture_reference_options;
 
 int mgl_texture_init(mgl_texture *self);