(no commit message)

[gacela.git] / gacela_draw.lisp

diff --git a/gacela_draw.lisp b/gacela_draw.lisp
index c04fc8916fe1ac57e9b51e0b9fad5f3cbf255d8f..00eb5516208f950a952201b59a9f3a8dc06959a9 100644 (file)
--- a/gacela_draw.lisp
+++ b/gacela_draw.lisp
@@ -16,24 +16,20 @@
 
 (in-package :gacela)
 
-(let ((mode '2d))
-  (defun 2d-mode ()
-    (glDisable GL_DEPTH_TEST)
-    (setq mode '2d))
-
-  (defun 3d-mode ()
-    (glEnable GL_DEPTH_TEST)
-    (setq mode '3d))
-
-  (defun 3d-mode? ()
-    (eq mode '3d)))
-
 (defmacro with-color (color &body code)
   `(let ((original-color (get-current-color)))
      (apply #'set-current-color ,color)
      ,@code
      (apply #'set-current-color original-color)))
 
+(defmacro progn-textures (&body code)
+  `(let (values)
+     (init-video-mode)
+     (glEnable GL_TEXTURE_2D)
+     (setq values (multiple-value-list (progn ,@code)))
+     (glDisable GL_TEXTURE_2D)
+     (apply #'values values)))
+
 (defun draw (&rest vertexes)
   (begin-draw (length vertexes))
   (draw-vertexes vertexes)
@@ -75,34 +71,42 @@
 (defun load-texture (filename &key (min-filter GL_LINEAR) (mag-filter GL_LINEAR) static)
   (let ((key (make-resource-texture :filename filename :min-filter min-filter :mag-filter mag-filter)))
     (cond ((get-resource key) key)
-         (t
-          (progn-textures
-           (multiple-value-bind
-            (image real-w real-h) (load-image-for-texture filename)
-            (cond (image
-                   (let ((width (surface-w image)) (height (surface-h image))
-                         (byteorder (if (= (SDL_ByteOrder) SDL_LIL_ENDIAN)
-                                    (if (= (surface-format-BytesPerPixel image) 3) GL_BGR GL_BGRA)
-                                    (if (= (surface-format-BytesPerPixel image) 3) GL_RGB GL_RGBA)))
-                         (texture (car (glGenTextures 1))))
-                     (glBindTexture GL_TEXTURE_2D texture)
-                     (glTexImage2D GL_TEXTURE_2D 0 3 width height 0 byteorder GL_UNSIGNED_BYTE (surface-pixels image))
-                     (glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MIN_FILTER min-filter)
-                     (glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MAG_FILTER mag-filter)
-                     (SDL_FreeSurface image)
-                     (set-resource key `(:id-texture ,texture :width ,real-w :height ,real-h) nil :static static)
-                     key)))))))))
+         (t (true-load-texture filename min-filter mag-filter static)))))
+
+(defun true-load-texture (filename min-filter mag-filter static)
+  (let ((key (make-resource-texture :filename filename :min-filter min-filter :mag-filter mag-filter)))
+    (progn-textures
+     (multiple-value-bind
+      (image real-w real-h) (load-image-for-texture filename)
+      (cond (image
+            (let ((width (surface-w image)) (height (surface-h image))
+                  (byteorder (if (= (SDL_ByteOrder) SDL_LIL_ENDIAN)
+                               (if (= (surface-format-BytesPerPixel image) 3) GL_RGB GL_RGBA)
+                               (if (= (surface-format-BytesPerPixel image) 3) GL_BGR GL_BGRA)))
+                  (texture (car (glGenTextures 1))))
+              (glBindTexture GL_TEXTURE_2D texture)
+              (glTexImage2D GL_TEXTURE_2D 0 3 width height 0 byteorder GL_UNSIGNED_BYTE (surface-pixels image))
+              (glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MIN_FILTER min-filter)
+              (glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MAG_FILTER mag-filter)
+              (SDL_FreeSurface image)
+              (set-resource key
+                            `(:id-texture ,texture :width ,real-w :height ,real-h)
+                            (lambda () (true-load-texture filename min-filter mag-filter static))
+                            (lambda () (glDeleteTextures 1 `(,texture)))
+                            :static static)
+              key)))))))
 
 (defun draw-image-function (filename)
-  (multiple-value-bind
-   (texture width height) (load-texture filename)
-   (lambda (&optional (f 1))
-     (cond (texture
-           (draw-rectangle (* f width) (* f height) :texture texture))))))
+  (let ((texture (load-texture filename)))
+    (lambda (&optional (f 1))
+      (cond (texture
+            (let ((width (getf (get-resource texture) :width))
+                  (height (getf (get-resource texture) :height)))
+              (draw-rectangle (* f width) (* f height) :texture texture)))))))
 
 (defun draw-quad (v1 v2 v3 v4 &key texture)
   (cond (texture (progn-textures
-                 (glBindTexture GL_TEXTURE_2D (getf texture :id-texture))
+                 (glBindTexture GL_TEXTURE_2D (getf (get-resource texture) :id-texture))
                  (begin-draw 4)
                  (draw-vertex v1 :texture-coord '(0 0))
                  (draw-vertex v2 :texture-coord '(1 0))
@@ -145,7 +149,10 @@
 (defun translate (x y &optional (z 0))
   (glTranslatef x y z))
 
-(defun rotate (xrot yrot &optional zrot)
+(defun rotate (xrot yrot zrot)
   (glRotatef xrot 1 0 0)
   (glRotatef yrot 0 1 0)
-  (cond (zrot (glRotatef zrot 0 0 1))))
+  (glRotatef zrot 0 0 1))
+
+(defun 2d-rotate (rot)
+  (rotate 0 0 rot))
\ No newline at end of file