;;; You should have received a copy of the GNU General Public License
;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
-
(in-package :gacela)
+(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)
(draw-vertexes (cdr vertexes)))))
(defun draw-vertex (vertex &key texture-coord)
- (cond ((consp (car vertex)) (apply #'glColor3f (car vertex)) (apply #'glVertex3f (cadr vertex)))
+ (cond ((consp (car vertex))
+ (with-color (car vertex)
+ (apply #'simple-draw-vertex (cadr vertex))))
(t (cond (texture-coord (apply #'glTexCoord2f texture-coord)))
- (apply #'glVertex3f vertex))))
+ (apply #'simple-draw-vertex vertex))))
-(defun draw-color (color)
- (apply #'glColor3f color))
+(defun simple-draw-vertex (x y &optional (z 0))
+ (cond ((3d-mode?) (glVertex3f x y z))
+ (t (glVertex2f x y))))
-(defun load-texture (filename &optional (min-filter GL_LINEAR) (mag-filter GL_LINEAR))
-; (init-textures)
+(defun load-image-for-texture (filename)
(init-video-mode)
- (let ((image (IMG_Load filename))
- (texture (car (glGenTextures 1))))
+ (let ((image (IMG_Load filename)))
(cond ((/= image 0)
- (glBindTexture GL_TEXTURE_2D texture)
- (glTexImage2D GL_TEXTURE_2D 0 3 (surface-w image) (surface-h image) 0 GL_BGR 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)))
- texture))
-
-(defun draw-quad (v1 v2 v3 v4 &key texture color)
- (cond (texture (glBindTexture GL_TEXTURE_2D texture)
- (begin-draw 4)
- (draw-vertex v1 :texture-coord '(0 0))
- (draw-vertex v2 :texture-coord '(1 0))
- (draw-vertex v3 :texture-coord '(1 1))
- (draw-vertex v4 :texture-coord '(0 1))
- (glEnd))
- (t (cond (color (draw-color color)))
- (draw v1 v2 v3 v4))))
-
-(defun draw-square (&key size texture color)
- (let ((-size (neg size)))
- (draw-quad (list -size size 0) (list size size 0) (list size -size 0) (list -size -size 0) :texture texture :color color)))
+ (let* ((width (surface-w image)) (height (surface-h image))
+ (power-2 (nearest-power-of-two (min width height)))
+ (zoomx (/ power-2 width)) (zoomy (/ power-2 height))
+ zoomed-image)
+ (cond ((and (= zoomx 1) (= zoomy 1)) (values image width height))
+ (t (setq zoomed-image (zoomSurface image zoomx zoomy 0))
+ (SDL_FreeSurface image)
+ (cond ((/= zoomed-image 0) (values zoomed-image width height))))))))))
+
+(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 (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)
+ (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 (get-resource texture) :id-texture))
+ (begin-draw 4)
+ (draw-vertex v1 :texture-coord '(0 0))
+ (draw-vertex v2 :texture-coord '(1 0))
+ (draw-vertex v3 :texture-coord '(1 1))
+ (draw-vertex v4 :texture-coord '(0 1))
+ (glEnd)))
+ (t (draw v1 v2 v3 v4))))
+
+(defun draw-rectangle (width height &key texture)
+ (let* ((w (/ width 2)) (-w (neg w)) (h (/ height 2)) (-h (neg h)))
+ (draw-quad (list -w h 0) (list w h 0) (list w -h 0) (list -w -h 0) :texture texture)))
+
+(defun draw-square (&key (size 1) texture)
+ (draw-rectangle size size :texture texture))
-(defun draw-cube (&key size texture color)
+(defun draw-cube (&key size texture)
(let ((-size (neg size)))
- (enable :textures texture)
- (glNormal3f 0 0 1)
- (draw-quad (list -size size size) (list size size size) (list size -size size) (list -size -size size) :texture texture :color color)
- (glNormal3f 0 0 -1)
- (draw-quad (list -size -size -size) (list size -size -size) (list size size -size) (list -size size -size) :texture texture :color color)
- (glNormal3f 0 1 0)
- (draw-quad (list size size size) (list -size size size) (list -size size -size) (list size size -size) :texture texture :color color)
- (glNormal3f 0 -1 0)
- (draw-quad (list -size -size size) (list size -size size) (list size -size -size) (list -size -size -size) :texture texture :color color)
- (glNormal3f 1 0 0)
- (draw-quad (list size -size -size) (list size -size size) (list size size size) (list size size -size) :texture texture :color color)
- (glNormal3f -1 0 0)
- (draw-quad (list -size -size size) (list -size -size -size) (list -size size -size) (list -size size size) :texture texture :color color)))
+ (progn-textures
+ (glNormal3f 0 0 1)
+ (draw-quad (list -size size size) (list size size size) (list size -size size) (list -size -size size) :texture texture)
+ (glNormal3f 0 0 -1)
+ (draw-quad (list -size -size -size) (list size -size -size) (list size size -size) (list -size size -size) :texture texture)
+ (glNormal3f 0 1 0)
+ (draw-quad (list size size size) (list -size size size) (list -size size -size) (list size size -size) :texture texture)
+ (glNormal3f 0 -1 0)
+ (draw-quad (list -size -size size) (list size -size size) (list size -size -size) (list -size -size -size) :texture texture)
+ (glNormal3f 1 0 0)
+ (draw-quad (list size -size -size) (list size -size size) (list size size size) (list size size -size) :texture texture)
+ (glNormal3f -1 0 0)
+ (draw-quad (list -size -size size) (list -size -size -size) (list -size size -size) (list -size size size) :texture texture))))
(defun add-light (&key light position ambient (id GL_LIGHT1) (turn-on t))
(init-lighting)
(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 enable (&key textures)
- (cond (textures (glEnable GL_TEXTURE_2D))))
\ No newline at end of file
+(defun 2d-rotate (rot)
+ (rotate 0 0 rot))
\ No newline at end of file
projects / gacela.git / blobdiff