switch to vgc system

[fishladder.git] / vg / vg_shader.h

diff --git a/vg/vg_shader.h b/vg/vg_shader.h
deleted file mode 100644 (file)
index ff8a5f0..0000000
--- a/vg/vg_shader.h
+++ /dev/null
@@ -1,168 +0,0 @@
-// Copyright (C) 2021 Harry Godden (hgn) - All Rights Reserved
-
-const char *vg_shader_gl_ver = "#version 330 core\n";
-
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wreturn-type"
-static inline int static_str_index( const char *list[], int len, const char *str )
-{
-    for( int i = 0; i < len; i ++ )
-    {
-        if( !strcmp(list[i],str) )
-            return i;
-    }
-    
-    #ifndef VG_RELEASE
-    fprintf( stderr, "That was not a static string index!! (%s)\n", str );
-    abort();
-    #endif
-}
-#pragma GCC diagnostic pop
-
-#define SHADER_NAME( NAME ) (NAME##_static_shader.program)
-#define SHADER_USE( NAME ) glUseProgram( NAME##_static_shader.program )
-
-#define SHADER_UNIFORM( NAME, U ) NAME##_shader_uniforms[ STR_STATIC_INDEX( NAME##_shader_names, U ) ]
-#define SHADER_UNIFORM_NAME( NAME, UID ) NAME##_shader_names[ UID ]
-#define STR_STATIC_INDEX( LIST, STR ) static_str_index( LIST, vg_list_size(LIST), STR )
-
-#define UNIFORMS(...) __VA_ARGS__
-
-#define SHADER_DEFINE( NAME, VERT, FRAG, UNIFORMS )                                                    \
-       const char * NAME##_shader_names[] = UNIFORMS;                                                          \
-       GLint NAME##_shader_uniforms[ vg_list_size( NAME##_shader_names ) ];    \
-       struct vg_shader NAME##_static_shader = {                                                                               \
-               .src_vert = VERT, .src_frag = FRAG,                                                                                     \
-               .sym = #NAME "_static.shader",                                                                                          \
-               .uniform_names = NAME##_shader_names,                                                                           \
-               .uniforms = NAME##_shader_uniforms,                                                                                     \
-               .uniform_count = vg_list_size( NAME##_shader_names ),                                   \
-       };
-
-#define SHADER_INIT( NAME ) arrpush( vg_shaders_active, &NAME##_static_shader )
-
-#define SHADER_STATUS_NONE 0x00
-#define SHADER_STATUS_COMPILED 0x1
-
-struct vg_shader
-{
-       GLuint program;
-
-       const char *src_vert;
-       const char *src_frag;
-       const char *src_geo;
-       const char *sym;
-       
-       const char **uniform_names;
-       GLint *uniforms;
-       u32 uniform_count;
-       u32 status;
-}
-** vg_shaders_active = NULL;
-
-static GLuint vg_shader_subshader( const char *src, GLint gliShaderType )
-{
-       GLint shader = glCreateShader( gliShaderType );
-       glShaderSource( shader, 2, (const char *[2]){ vg_shader_gl_ver, src }, NULL );
-       glCompileShader( shader );
-
-       int success;
-       char infoLog[512];
-       glGetShaderiv( shader, GL_COMPILE_STATUS, &success );
-
-       if( !success )
-       {
-               glGetShaderInfoLog( shader, 512, NULL, infoLog );
-               vg_error( "Error info:\n%s\n", infoLog );
-               return 0;
-       }
-
-       return shader;
-}
-
-static int vg_shader_compile( struct vg_shader *shader )
-{
-       vg_info( "Compile shader '%s'\n", shader->sym );
-       
-       GLuint vert, frag, geo = 0;
-       
-       vert = vg_shader_subshader( shader->src_vert, GL_VERTEX_SHADER );
-       frag = vg_shader_subshader( shader->src_frag, GL_FRAGMENT_SHADER );
-       
-       if( !vert || !frag )
-               return 0;
-       
-       if( shader->src_geo )
-       {
-               geo = vg_shader_subshader( shader->src_geo, GL_GEOMETRY_SHADER );
-               
-               if( !geo )
-                       return 0;
-       }
-       
-       shader->program = glCreateProgram();
-       if( geo )
-               glAttachShader( shader->program, geo );
-               
-       glAttachShader( shader->program, vert );
-       glAttachShader( shader->program, frag );
-       glLinkProgram( shader->program );
-       
-       glDeleteShader( vert );
-       glDeleteShader( frag );
-       
-       if( geo )
-               glDeleteShader( geo );
-               
-       // Check for link errors
-       char infoLog[ 512 ];
-       int success_link = 1;
-       
-       glGetProgramiv( shader->program, GL_LINK_STATUS, &success_link );
-       if( !success_link )
-       {
-               glGetProgramInfoLog( shader->program, 512, NULL, infoLog );
-               vg_error( "Link failed: %s\n", infoLog );
-               glDeleteProgram( shader->program );
-               
-               return 0;
-       }
-       
-       // Complete linkeage
-       for( int i = 0; i < shader->uniform_count; i ++ )
-               shader->uniforms[ i ] = glGetUniformLocation( shader->program, shader->uniform_names[i] );
-
-       shader->status |= SHADER_STATUS_COMPILED;
-       return 1;
-}
-
-static void vg_shaders_free(void)
-{
-       for( int i = 0; i < arrlen( vg_shaders_active ); i ++ )
-       {
-               struct vg_shader *shader = vg_shaders_active[i];
-               
-               if( shader->status & SHADER_STATUS_COMPILED )
-                       glDeleteProgram( shader->program );
-       }
-       
-       arrfree( vg_shaders_active );
-}
-
-static int vg_shaders_compile(void)
-{
-       vg_info( "Compiling shaders\n" );
-
-       for( int i = 0; i < arrlen( vg_shaders_active ); i ++ )
-       {
-               struct vg_shader *shader = vg_shaders_active[i];
-               if( !vg_shader_compile( shader ) )
-               {
-                       vg_shaders_free();
-                       return 0;
-               }
-       }
-       
-       vg_register_exit( &vg_shaders_free, "vg_shaders_free" );
-       return 1;
-}