simplify gitignore

[vg.git] / src / vg / vg_tex.h

diff --git a/src/vg/vg_tex.h b/src/vg/vg_tex.h
index 33e074ef59b6736f8f45186028e8a4d78a8d6c56..0896b75de57bb021b936f7fe3f1f48e1d48e476c 100644 (file)
--- a/src/vg/vg_tex.h
+++ b/src/vg/vg_tex.h
@@ -1,9 +1,32 @@
 /* Copyright (C) 2021-2022 Harry Godden (hgn) - All Rights Reserved */
+#ifndef VG_TEX_H
+#define VG_TEX_H
+
+#include "vg/vg.h"
+#include "vg/vg_log.h"
 
 #define VG_TEXTURE_NO_MIP      0x1
 #define VG_TEXTURE_REPEAT      0x2
 #define VG_TEXTURE_CLAMP       0x4
 #define VG_TEXTURE_NEAREST     0x8
+#define VG_TEXTURE_ALLOCATED_INTERNAL 0x10
+
+VG_STATIC void *vg_qoi_malloc( size_t size )
+{
+   return vg_linear_alloc( vg_mem.scratch, size );
+}
+
+VG_STATIC void vg_qoi_free( void *ptr )
+{
+   
+}
+
+#define QOI_IMPLEMENTATION
+#define QOI_NO_STDIO
+#define QOI_MALLOC(sz) vg_qoi_malloc( sz )
+#define QOI_FREE(p) vg_qoi_free( p )
+
+#include "phoboslab/qoi.h"
 
 struct vg_tex2d
 {
@@ -17,8 +40,14 @@ struct vg_sprite
        v4f uv_xywh;
 };
 
-static void vg_tex2d_bind( vg_tex2d *tex, u32 id )
+VG_STATIC void vg_tex2d_bind( vg_tex2d *tex, u32 id )
 {
+   if( !(tex->flags & VG_TEXTURE_ALLOCATED_INTERNAL) )
+   {
+      vg_error( "Tried to use '%s' while unloaded!\n", tex->path );
+      return;
+   }
+
        glActiveTexture( GL_TEXTURE0 + id );
        glBindTexture( GL_TEXTURE_2D, tex->name );
 }
@@ -59,47 +88,75 @@ static inline void vg_tex2d_clamp(void)
        glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
 }
 
-static GLuint vg_tex2d_rgba( const char *path )
+VG_STATIC GLuint vg_tex2d_new(void)
 {
-       i64 length;
-       u8 *src_data = vg_asset_read_s( path, &length );
-       
        GLuint texture_name;
        glGenTextures( 1, &texture_name );
        glBindTexture( GL_TEXTURE_2D, texture_name );
-       
-       if( src_data )
-       {
-               qoi_desc info;
-               u8 *tex_buffer = qoi_decode( src_data, length, &info, 4 );
-               
-               glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, info.width, info.height, 
-            0, GL_RGBA, GL_UNSIGNED_BYTE, tex_buffer );
-               
-               free( tex_buffer );
-               free( src_data );
-       }
-       else
-       {
-               u32 tex_err[4] =
-               {
-                       0xffff00ff,
-                       0xff000000,
-                       0xff000000,
-                       0xffff00ff
-               };
-       
+
+   return texture_name;
+}
+
+VG_STATIC void vg_tex2d_set_error(void)
+{
+   u32 tex_err[4] =
+   {
+      0xffff00ff,
+      0xff000000,
+      0xff000000,
+      0xffff00ff
+   };
+
+   glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 
+                  0, GL_RGBA, GL_UNSIGNED_BYTE, tex_err );
+}
+
+VG_STATIC void vg_tex2d_qoi( void *mem, u32 size, const char *name )
+{
+   qoi_desc info;
+   u8 *tex_buffer = qoi_decode( mem, size, &info, 4 );
+
+   if( tex_buffer )
+   {
+      vg_info( "Texture decoded: [%u %u] %s\n", 
+                                    info.width, info.height, name );
+
+      glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, info.width, info.height, 
+                    0, GL_RGBA, GL_UNSIGNED_BYTE, tex_buffer );
+
+      QOI_FREE(tex_buffer);
+   }
+   else
+   {
+      vg_error( "File size: %u\n", size );
+      vg_tex2d_set_error();
+   }
+}
+
+VG_STATIC GLuint vg_tex2d_rgba( const char *path )
+{
+   GLuint texture_name = vg_tex2d_new();
+
+   vg_linear_clear( vg_mem.scratch );
+   u32 size;
+   void *file = vg_file_read( vg_mem.scratch, path, &size );
+
+   if( file )
+   {
+      vg_tex2d_qoi( file, size, path );
+   }
+   else
+   {
                vg_error( "Loading texture failed (%s)\n", path );
-               glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 
-            0, GL_RGBA, GL_UNSIGNED_BYTE, tex_err );
-       }
-       
+      vg_tex2d_set_error();
+   }
+
        return texture_name;
 }
 
-static void vg_tex2d_init( vg_tex2d *textures[], int num )
+VG_STATIC void vg_tex2d_init( vg_tex2d *textures[], int num )
 {
-       for( int i = 0; i < num; i ++ )
+       for( int i=0; i<num; i ++ )
        {
                vg_tex2d *tex = textures[i];
                tex->name = vg_tex2d_rgba( tex->path );
@@ -125,13 +182,17 @@ static void vg_tex2d_init( vg_tex2d *textures[], int num )
                        vg_tex2d_clamp();
                else
                        vg_tex2d_repeat();
+
+      tex->flags |= VG_TEXTURE_ALLOCATED_INTERNAL;
        }
 }
 
-static void vg_tex2d_free( vg_tex2d *textures[], int num )
+VG_STATIC void vg_tex2d_free( vg_tex2d *textures[], int num )
 {
        for( int i = 0; i < num; i ++ )
        {
                glDeleteTextures( 1, &textures[i]->name );
        }
 }
+
+#endif /* VG_TEX_H */