X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=src%2Fvg%2Fvg_tex.h;h=0896b75de57bb021b936f7fe3f1f48e1d48e476c;hb=3dd767bb10e6fee9cbffeb185d1a9685810c17b5;hp=33e074ef59b6736f8f45186028e8a4d78a8d6c56;hpb=95c9a820474d4974ee394f2fcfae82fbfa367dbd;p=vg.git

diff --git a/src/vg/vg_tex.h b/src/vg/vg_tex.h
index 33e074e..0896b75 100644
--- 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 */