Change GLSL to use bsnes 071's unified files.

gtk/src/gtk_config.cpp

@@ -332,7 +332,6 @@ Snes9xConfig::save_config_file (void)
     xml_out_int (xml, "npot_textures", npot_textures);
     xml_out_int (xml, "use_shaders", use_shaders);
     xml_out_string (xml, "fragment_shader", fragment_shader);
-    xml_out_string (xml, "vertex_shader", vertex_shader);
 #endif
 
 #ifdef USE_JOYSTICK
@@ -550,7 +549,7 @@ Snes9xConfig::set_option (const char *name, const char *value)
     else if (!strcasecmp (name, "vertex_shader"))
     {
 #ifdef USE_OPENGL
-        strncpy (vertex_shader, value, PATH_MAX);
+        /* Deprecated */
 #endif
     }
     else if (!strcasecmp (name, "joystick_threshold"))
@@ -1141,6 +1140,8 @@ Snes9xConfig::load_config_file (void)
 
     parse_snes9x (xml_root);
 
+    xmlFreeDoc (xml_doc);
+
     return 0;
 }
 

gtk/src/gtk_display_driver_opengl.cpp

@@ -1,5 +1,7 @@
 #include <gtk/gtk.h>
 #include <gdk/gdkx.h>
+#include <libxml/parser.h>
+#include <libxml/tree.h>
 #include <X11/Xlib.h>
 #include <GL/glx.h>
 #include <GL/glxext.h>
@@ -40,44 +42,6 @@ static const char *glUnmapBufferNames[] = { "glUnmapBuffer",
                                             "glUnmapBufferEXT",
                                             NULL };
 
-static char *
-get_file_contents (const char *filename)
-{
-    struct stat fs;
-    int         fd;
-
-    if (!filename || !strlen (filename) || stat (filename, &fs))
-    {
-        return NULL;
-    }
-
-    fd = open (filename, O_RDONLY);
-    if (fd == -1)
-        return NULL;
-
-    char *contents = new char[fs.st_size + 1];
-
-    int bytes_read = 0;
-    while (bytes_read < fs.st_size)
-    {
-        int retval;
-        retval = read (fd, contents + bytes_read, fs.st_size - bytes_read);
-        if (retval == -1)
-        {
-            delete[] contents;
-            close (fd);
-            return NULL;
-        }
-        bytes_read += retval;
-    }
-
-    contents[fs.st_size] = '\0';
-
-    close (fd);
-
-    return contents;
-}
-
 gl_proc
 get_null_address_proc (const GLubyte *name)
 {
@@ -539,10 +503,11 @@ S9xOpenGLDisplayDriver::load_shader_functions (void)
 }
 
 int
-S9xOpenGLDisplayDriver::load_shaders (const char *vertex_file,
-                                      const char *fragment_file)
+S9xOpenGLDisplayDriver::load_shaders (const char *shader_file)
 {
-    char *fragment, *vertex;
+    xmlDoc *xml_doc = NULL;
+    xmlNodePtr node = NULL;
+    char *fragment = NULL, *vertex = NULL;
 
     if (!load_shader_functions ())
     {
@@ -550,18 +515,42 @@ S9xOpenGLDisplayDriver::load_shaders (const char *vertex_file,
         return 0;
     }
 
-    fragment = get_file_contents (fragment_file);
-    if (!fragment)
+    xml_doc = xmlReadFile (shader_file, NULL, 0);
+
+    if (!xml_doc)
     {
-        fprintf (stderr, _("Cannot load fragment program.\n"));
+        fprintf (stderr, _("Cannot read shader file.\n"));
         return 0;
     }
 
-    vertex   = get_file_contents (vertex_file);
-    if (!vertex)
+    node = xmlDocGetRootElement (xml_doc);
+
+    if (xmlStrcasecmp (node->name, BAD_CAST "shader"))
     {
-        fprintf (stderr, _("Cannot load vertex program.\n"));
-        delete[] fragment;
+        fprintf (stderr, _("File %s is not a shader file.\n"), shader_file);
+        xmlFreeDoc (xml_doc);
+        return 0;
+    }
+
+    for (xmlNodePtr i = node->children; i; i = i->next)
+    {
+        if (!xmlStrcasecmp (i->name, BAD_CAST "vertex"))
+        {
+            if (i->children)
+                vertex = (char *) i->children->content;
+        }
+
+        if (!xmlStrcasecmp (i->name, BAD_CAST "fragment"))
+        {
+            if (i->children)
+                fragment = (char *) i->children->content;
+        }
+    }
+
+    if (!vertex || !fragment)
+    {
+        fprintf (stderr, _("Shader is missing either a vertex or fragment program.\n"));
+        xmlFreeDoc (xml_doc);
         return 0;
     }
 
@@ -578,6 +567,8 @@ S9xOpenGLDisplayDriver::load_shaders (const char *vertex_file,
 
     glUseProgram (program);
 
+    xmlFreeDoc (xml_doc);
+
     return 1;
 }
 
@@ -602,7 +593,7 @@ S9xOpenGLDisplayDriver::opengl_defaults (void)
     using_shaders = 0;
     if (config->use_shaders)
     {
-        if (!load_shaders (config->vertex_shader, config->fragment_shader))
+        if (!load_shaders (config->fragment_shader))
         {
             config->use_shaders = 0;
         }

gtk/src/gtk_display_driver_opengl.h

@@ -90,7 +90,7 @@ class S9xOpenGLDisplayDriver : public S9xDisplayDriver
         void gl_swap (void);
         int load_pixel_buffer_functions (void);
         int load_shader_functions (void);
-        int load_shaders (const char *, const char *);
+        int load_shaders (const char *);
         gl_proc get_aliased_extension (const char **name);
         void update_texture_size (int width, int height);
         int init_glx (void);

gtk/src/gtk_preferences.cpp

@@ -232,10 +232,6 @@ event_shader_select (GtkButton *widget, gpointer data)
     {
         entry = GTK_ENTRY (window->get_widget ("fragment_shader"));
     }
-    else
-    {
-        entry = GTK_ENTRY (window->get_widget ("vertex_shader"));
-    }
 
     dialog = gtk_file_chooser_dialog_new ("Select Shader File",
                                           window->get_window (),
@@ -733,7 +729,6 @@ Snes9xPreferences::move_settings_to_dialog (void)
     set_check ("npot_textures",             config->npot_textures);
     set_check ("use_shaders",               config->use_shaders);
     set_entry_text ("fragment_shader",      config->fragment_shader);
-    set_entry_text ("vertex_shader",        config->vertex_shader);
 #endif
 
 #ifdef USE_JOYSTICK
@@ -861,7 +856,6 @@ Snes9xPreferences::get_settings_from_dialog (void)
     config->sync_every_frame          = get_check ("sync_every_frame");
 
     strncpy (config->fragment_shader, get_entry_text ("fragment_shader"), PATH_MAX);
-    strncpy (config->vertex_shader, get_entry_text ("vertex_shader"), PATH_MAX);
 
     config->pbo_format = get_combo ("pixel_format");
 #endif