1 files changed, 77 insertions, 0 deletions
diff --git a/src/video/load_texture.c b/src/video/load_texture.c
new file mode 100644
index 0000000..8d02b67
--- /dev/null
+++ b/src/video/load_texture.c
@@ -0,0 +1,77 @@
+#include "video/video.h"
+#include "filesystem/path.h"
+
+#include "Nebu_scripting.h"
+
+void freeTextureData(texture *tex) {
+  free(tex->data);
+  free(tex);
+}
+
+texture* loadTextureData(const char *filename) {
+  texture *tex = NULL;
+  char *path;
+  char *artpack;
+  
+	scripting_GetGlobal("settings", "current_artpack", NULL);
+  scripting_GetStringResult(&artpack);
+  path = getArtPath(artpack, filename);
+  free(artpack);
+  if(path != NULL) {
+    tex = LOAD_TEX(path);
+    free(path);
+  }
+
+  if(tex == NULL) {    
+    fprintf(stderr, "fatal: failed load %s, exiting...\n", filename);
+    exit(1); /* OK: critical, installation corrupt */
+  }
+  return tex;
+}
+
+void loadTexture(const char *filename, int format) {
+  texture *tex;
+  GLint internal;
+	int maxSize;
+	
+	glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxSize);
+	
+  tex = loadTextureData(filename);
+  if(tex->channels == 3) internal = GL_RGB;
+  else internal = GL_RGBA;
+  if(format == GL_DONT_CARE) {
+    if(tex->channels == 3) format = GL_RGB;
+    if(tex->channels == 4) format = GL_RGBA;
+  }
+  /* TODO: build mipmaps the proper way, box filters suck */
+  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+	
+	{
+		texture *newtex;
+		int level = 0;
+    while (tex->width > 1 || tex->height > 1) {
+			if(tex->width <= maxSize && tex->height <= maxSize) {
+					glTexImage2D(GL_TEXTURE_2D, level, format, 
+											 tex->width, tex->height,
+											 0, internal, GL_UNSIGNED_BYTE, tex->data);
+#ifdef PRINTF_VERBOSE
+					printf("uploading level %d, %dx%d texture\n", 
+						 level, tex->width, tex->height);
+#endif
+					level++;
+			}
+      newtex = mipmap_png_texture(tex, 1, 0, 0);
+      freeTextureData(tex);
+      tex = newtex;
+		}
+		/* upload 1x1 mip level */
+		glTexImage2D(GL_TEXTURE_2D, level, format, 
+								 tex->width, tex->height,
+								 0, internal, GL_UNSIGNED_BYTE, tex->data);
+#ifdef PRINTF_VERBOSE
+		printf("uploading level %d, %dx%d texture\n", 
+					 level, tex->width, tex->height);
+#endif
+		freeTextureData(tex);
+	}
+}