X-Git-Url: https://harrygodden.com/git/?p=vg.git;a=blobdiff_plain;f=vg_shader.h;h=50e8bd0e291589a17d32b17fe1c11f0038e9234e;hp=516d1a84c67587c7e44d56fe2853c870de252138;hb=HEAD;hpb=4c48fe01a5d1983be89b7dce6f08e6b708cfbb05

diff --git a/vg_shader.h b/vg_shader.h
index 516d1a8..5e2ad35 100644
--- a/vg_shader.h
+++ b/vg_shader.h
@@ -1,25 +1,8 @@
-/* Copyright (C) 2021-2022 Harry Godden (hgn) - All Rights Reserved */
-
-#ifndef VG_SHADER_H
-#define VG_SHADER_H
-
-#include "vg/vg.h"
-#include "vg/vg_platform.h"
-
-#if 0
-#define STB_INCLUDE_IMPLEMENTATION
-#define STB_INCLUDE_LINE_GLSL
-#define STB_MALLOC  vg_alloc
-#define STB_FREE    vg_free
-#define STB_REALLOC vg_realloc
-#include "stb/stb_include.h"
-#endif
-
-const char *vg_shader_gl_ver = "#version 330 core\n";
+#pragma once
 
 typedef struct vg_shader vg_shader;
 
-struct
+struct vg_shaders
 {
    struct vg_shader
    {
@@ -32,188 +15,14 @@ struct
                     *static_src;
       }
       vs, fs;
-
-      void (*link)(void);
       int compiled;
    }
-   * shaders[32];
+   * shaders[48];
    u32 count;
 }
-static vg_shaders;
-
-VG_STATIC GLuint vg_shader_subshader( const char *src, GLint gliShaderType )
-{
-	GLint shader = glCreateShader( gliShaderType );
-
-   if( shader == GL_NONE )
-   {
-      vg_error( "Could not 'glCreateShader()'\n" );
-      return 0;
-   }
-
-	glShaderSource( shader, 2, (const char*[2]){ vg_shader_gl_ver, src }, NULL );
-	glCompileShader( shader );
-
-	GLint status;
-	glGetShaderiv( shader, GL_COMPILE_STATUS, &status );
-
-	if( status != GL_TRUE )
-	{
-      GLchar info[1024];
-      GLsizei len;
-
-		glGetShaderInfoLog( shader, sizeof(info), &len, info );
-		vg_error( "Error info:\n%s\n", info );
-		return 0;
-	}
-
-	return shader;
-}
-
-VG_STATIC int vg_shader_compile( struct vg_shader *shader )
-{
-	vg_info( "Compile shader '%s'\n", shader->name );
-	
-	GLuint program, vert, frag;
-   const char *svs, *sfs;
-   char *avs, *afs;
-
-   int static_src = 1;
-   
-   /* If we are compiling this again, we obviously need to try to take the src
-    * from the disk instead.
-    *
-    * Only do this if we have filenames set on the shader, so engine shaders 
-    * dont have to do it (text.. etc).
-    */
-   if( shader->compiled )
-   {
-      if( shader->vs.orig_file && shader->fs.orig_file )
-         static_src = 0;
-      else return 1;
-   }
-
-   if( static_src )
-   {
-      svs = shader->vs.static_src;
-      sfs = shader->fs.static_src;
-   }
-   else
-   {
-      vg_fatal_exit_loop( "Unimplemented" );
-
-#if 0
-      char error[260];
-      char path[260];
-      strcpy( path, shader->vs.orig_file );
-      avs = stb_include_file( path, "", "../../shaders", error );
-
-      strcpy( path, shader->fs.orig_file );
-      afs = stb_include_file( path, "", "../../shaders", error );
-   
-      if( !avs || !afs )
-      {
-         vg_error( "Could not find shader source files (%s)\n",
-               shader->vs.orig_file );
-
-         vg_free( avs );
-         vg_free( afs );
-         return 0;
-      }
-
-      svs = avs;
-      sfs = afs;
-#endif
-   }
-	
-	vert = vg_shader_subshader( svs, GL_VERTEX_SHADER );
-	frag = vg_shader_subshader( sfs, GL_FRAGMENT_SHADER );
-	
-#if 0
-   if( !static_src )
-   {
-      free( avs );
-      free( afs );
-   }
-#endif
-
-	if( !vert || !frag )
-		return 0;
-	
-	program = glCreateProgram();
-		
-	glAttachShader( program, vert );
-	glAttachShader( program, frag );
-	glLinkProgram( program );
-	
-	glDeleteShader( vert );
-	glDeleteShader( frag );
-		
-	/* Check for link errors */
-	char infoLog[ 512 ];
-	int success_link = 1;
-	
-	glGetProgramiv( program, GL_LINK_STATUS, &success_link );
-	if( !success_link )
-	{
-		glGetProgramInfoLog( program, 512, NULL, infoLog );
-		vg_error( "Link failed: %s\n", infoLog );
-		glDeleteProgram( program );
-		return 0;
-	}
-	
-   if( shader->compiled )
-      glDeleteProgram( shader->id );
-   
-   shader->id = program;
-	shader->compiled = 1;
-   if( shader->link ) 
-      shader->link();
-	return 1;
-}
-
-VG_STATIC void vg_free_shader( struct vg_shader *shader )
-{
-   if( shader->compiled )
-   {
-      glDeleteProgram( shader->id );
-      shader->compiled = 0;
-   }
-}
-
-VG_STATIC void vg_shaders_compile(void)
-{
-	vg_info( "Compiling shaders\n" );
-
-	for( int i=0; i<vg_shaders.count; i ++ )
-	{
-		vg_shader *shader = vg_shaders.shaders[i];
-
-		if( !vg_shader_compile( shader ) )
-         vg_fatal_exit_loop( "Failed to compile shader" );
-	}
-}
-
-VG_STATIC int vg_shaders_live_recompile(int argc, const char *argv[])
-{
-   vg_info( "Recompiling shaders\n" );
-   for( int i=0; i<vg_shaders.count; i ++ )
-   {
-      struct vg_shader *shader = vg_shaders.shaders[i];
-      vg_shader_compile( shader );
-   }
-
-   return 0;
-}
-
-VG_STATIC void vg_shader_register( struct vg_shader *shader )
-{
-   if( vg_shaders.count == vg_list_size(vg_shaders.shaders) )
-      vg_fatal_exit_loop( "Too many shaders" );
-
-   shader->compiled = 0;
-   shader->id = 0;         /* TODO: make this an error shader */
-   vg_shaders.shaders[ vg_shaders.count ++ ] = shader;
-}
+extern vg_shaders;
 
-#endif /* VG_SHADER_H */
+void vg_shaders_compile(void);
+int vg_shaders_live_recompile(int argc, const char *argv[]);
+void vg_shader_register( struct vg_shader *shader );
+int vg_shader_compile( struct vg_shader *shader );