drisw: make stride issue profound

5 files changed, 82 insertions, 52 deletions

diff --git a/src/gallium/state_trackers/dri/sw/drisw.c b/src/gallium/state_trackers/dri/sw/drisw.c
index 745941d5501..a75fdf17899 100644
--- a/src/gallium/state_trackers/dri/sw/drisw.c
+++ b/src/gallium/state_trackers/dri/sw/drisw.c
@@ -38,16 +38,16 @@
  *
  * drisw_api:
  *
- * Define drisw_api similarly to dri_api and use it to call the loader. This is
- * predicated on support for calling the loader from the winsys, which has to
- * grow for DRI2 as well.
+ * Define drisw_api similarly to dri1_api and use it to call the loader. This
+ * is predicated on support for calling the loader from the winsys, which has
+ * to grow for DRI2 as well.
  *
- * xshm:
+ * xshm / texture_from_pixmap / EGLImage:
  *
  * Allow the loaders to use the XSHM extension. It probably requires callbacks
  * for createImage/destroyImage similar to DRI2 getBuffers. Probably not worth
  * it, given the scope of DRISW, unless it falls naturally from properly
- * solving the above two issues.
+ * solving the other issues.
  */
 
 #include "util/u_memory.h"
diff --git a/src/gallium/winsys/sw/dri/dri_sw_winsys.c b/src/gallium/winsys/sw/dri/dri_sw_winsys.c
index 5549e152ee8..9e8c31282d4 100644
--- a/src/gallium/winsys/sw/dri/dri_sw_winsys.c
+++ b/src/gallium/winsys/sw/dri/dri_sw_winsys.c
@@ -63,11 +63,11 @@ xm_is_displaytarget_format_supported( struct sw_winsys *ws,
 }
 
 static INLINE int
-bytes_per_line(unsigned stride, unsigned mul)
+bytes_per_line(unsigned pitch_bits, unsigned mul)
 {
    unsigned mask = mul - 1;
 
-   return ((stride * 8 + mask) & ~mask) / 8;
+   return ((pitch_bits + mask) & ~mask) / 8;
 }
 
 /* pipe_screen::texture_create DISPLAY_TARGET / SCANOUT / SHARED */
@@ -88,7 +88,7 @@ xm_displaytarget_create(struct sw_winsys *winsys,
 
    format_stride = util_format_get_stride(format, width);
    xm_stride = align(format_stride, alignment);
-   loader_stride = bytes_per_line(format_stride, 32);
+   loader_stride = bytes_per_line(format_stride * 8, 32);
 
    nblocksy = util_format_get_nblocksy(format, height);
    size = xm_stride * nblocksy;
diff --git a/src/glx/drisw_glx.c b/src/glx/drisw_glx.c
index 99f8f2cbf06..ca85ae3a313 100644
--- a/src/glx/drisw_glx.c
+++ b/src/glx/drisw_glx.c
@@ -53,7 +53,6 @@ struct __GLXDRIdrawablePrivateRec
 
    XVisualInfo *visinfo;
    XImage *ximage;
-   int bpp;
 };
 
 /**
@@ -90,13 +89,10 @@ XCreateDrawable(__GLXDRIdrawablePrivate * pdp,
                               pdp->visinfo->depth,
                               ZPixmap, 0,             /* format, offset */
                               NULL,                   /* data */
-                              0, 0,                   /* size */
-                              32,                     /* bitmap_pad */
+                              0, 0,                   /* width, height */
+                              8,                      /* bitmap_pad */
                               0);                     /* bytes_per_line */
 
-   /* get the true number of bits per pixel */
-   pdp->bpp = pdp->ximage->bits_per_pixel;
-
    return True;
 }
 
@@ -112,7 +108,8 @@ XDestroyDrawable(__GLXDRIdrawablePrivate * pdp, Display * dpy, XID drawable)
 
 static void
 swrastGetDrawableInfo(__DRIdrawable * draw,
-                      int *x, int *y, int *w, int *h, void *loaderPrivate)
+                      int *x, int *y, int *w, int *h,
+                      void *loaderPrivate)
 {
    __GLXDRIdrawablePrivate *pdp = loaderPrivate;
    __GLXDRIdrawable *pdraw = &(pdp->base);
@@ -121,26 +118,20 @@ swrastGetDrawableInfo(__DRIdrawable * draw,
 
    Window root;
    Status stat;
-   unsigned int bw, depth;
+   unsigned uw, uh, bw, depth;
 
    drawable = pdraw->xDrawable;
 
    stat = XGetGeometry(dpy, drawable, &root,
-                       x, y, (unsigned int *) w, (unsigned int *) h,
-                       &bw, &depth);
-}
-
-static inline int
-bytes_per_line(int w, int bpp, unsigned mul)
-{
-   unsigned mask = mul - 1;
-
-   return ((w * bpp + mask) & ~mask) / 8;
+                       x, y, &uw, &uh, &bw, &depth);
+   *w = uw;
+   *h = uh;
 }
 
 static void
-swrastPutImage(__DRIdrawable * draw, int op,
-               int x, int y, int w, int h, char *data, void *loaderPrivate)
+swrastPutImage2(__DRIdrawable * draw, int op,
+                int x, int y, int w, int h,
+                char *data, int pitch, void *loaderPrivate)
 {
    __GLXDRIdrawablePrivate *pdp = loaderPrivate;
    __GLXDRIdrawable *pdraw = &(pdp->base);
@@ -166,7 +157,7 @@ swrastPutImage(__DRIdrawable * draw, int op,
    ximage->data = data;
    ximage->width = w;
    ximage->height = h;
-   ximage->bytes_per_line = bytes_per_line(w, pdp->bpp, 32);
+   ximage->bytes_per_line = pitch;
 
    XPutImage(dpy, drawable, gc, ximage, 0, 0, x, y, w, h);
 
@@ -174,28 +165,67 @@ swrastPutImage(__DRIdrawable * draw, int op,
 }
 
 static void
-swrastGetImage(__DRIdrawable * draw,
-               int x, int y, int w, int h, char *data, void *loaderPrivate)
+swrastGetImage2(__DRIdrawable * read,
+                int x, int y, int w, int h,
+                char *data, int pitch, void *loaderPrivate)
 {
-   __GLXDRIdrawablePrivate *pdp = loaderPrivate;
-   __GLXDRIdrawable *pdraw = &(pdp->base);
-   Display *dpy = pdraw->psc->dpy;
-   Drawable drawable;
+   __GLXDRIdrawablePrivate *prp = loaderPrivate;
+   __GLXDRIdrawable *pread = &(prp->base);
+   Display *dpy = pread->psc->dpy;
+   Drawable readable;
    XImage *ximage;
 
-   drawable = pdraw->xDrawable;
+   readable = pread->xDrawable;
 
-   ximage = pdp->ximage;
+   ximage = prp->ximage;
    ximage->data = data;
    ximage->width = w;
    ximage->height = h;
-   ximage->bytes_per_line = bytes_per_line(w, pdp->bpp, 32);
+   ximage->bytes_per_line = pitch;
 
-   XGetSubImage(dpy, drawable, x, y, w, h, ~0L, ZPixmap, ximage, 0, 0);
+   XGetSubImage(dpy, readable, x, y, w, h, ~0L, ZPixmap, ximage, 0, 0);
 
    ximage->data = NULL;
 }
 
+static inline int
+bytes_per_line(unsigned pitch_bits, unsigned mul)
+{
+   unsigned mask = mul - 1;
+
+   return ((pitch_bits + mask) & ~mask) / 8;
+}
+
+static void
+swrastPutImage(__DRIdrawable * draw, int op,
+               int x, int y, int w, int h,
+               char *data, void *loaderPrivate)
+{
+   __GLXDRIdrawablePrivate *pdp = loaderPrivate;
+   int bpp, pitch;
+
+   bpp = pdp->ximage->bits_per_pixel;
+
+   pitch = bytes_per_line(w * bpp, 32);
+
+   swrastPutImage2(draw, op, x, y, w, h, data, pitch, loaderPrivate);
+}
+
+static void
+swrastGetImage(__DRIdrawable * read,
+               int x, int y, int w, int h,
+               char *data, void *loaderPrivate)
+{
+   __GLXDRIdrawablePrivate *prp = loaderPrivate;
+   int bpp, pitch;
+
+   bpp = prp->ximage->bits_per_pixel;
+
+   pitch = bytes_per_line(w * bpp, 32);
+
+   swrastGetImage2(read, x, y, w, h, data, pitch, loaderPrivate);
+}
+
 static const __DRIswrastLoaderExtension swrastLoaderExtension = {
    {__DRI_SWRAST_LOADER, __DRI_SWRAST_LOADER_VERSION},
    swrastGetDrawableInfo,
diff --git a/src/mesa/drivers/dri/swrast/swrast.c b/src/mesa/drivers/dri/swrast/swrast.c
index e9ca99a86f0..e8df26f3d06 100644
--- a/src/mesa/drivers/dri/swrast/swrast.c
+++ b/src/mesa/drivers/dri/swrast/swrast.c
@@ -206,12 +206,19 @@ swrast_delete_renderbuffer(struct gl_renderbuffer *rb)
     free(rb);
 }
 
+static INLINE int
+bytes_per_line(unsigned pitch_bits, unsigned mul)
+{
+   unsigned mask = mul - 1;
+
+   return ((pitch_bits + mask) & ~mask) / 8;
+}
+
 static GLboolean
 swrast_alloc_front_storage(GLcontext *ctx, struct gl_renderbuffer *rb,
 			   GLenum internalFormat, GLuint width, GLuint height)
 {
     struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
-    unsigned mask = PITCH_ALIGN_BITS - 1;
 
     TRACE;
 
@@ -219,8 +226,7 @@ swrast_alloc_front_storage(GLcontext *ctx, struct gl_renderbuffer *rb,
     rb->Width = width;
     rb->Height = height;
 
-    /* always pad to PITCH_ALIGN_BITS */
-    xrb->pitch = ((width * xrb->bpp + mask) & ~mask) / 8;
+    xrb->pitch = bytes_per_line(width * xrb->bpp, 32);
 
     return GL_TRUE;
 }
@@ -394,8 +400,10 @@ dri_swap_buffers(__DRIdrawable * dPriv)
 
     fb = &drawable->Base;
 
-    frontrb = swrast_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
-    backrb = swrast_renderbuffer(fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer);
+    frontrb =
+	swrast_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
+    backrb =
+	swrast_renderbuffer(fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer);
 
     /* check for signle-buffered */
     if (backrb == NULL)
diff --git a/src/mesa/drivers/dri/swrast/swrast_priv.h b/src/mesa/drivers/dri/swrast/swrast_priv.h
index 007642be95f..6679061a983 100644
--- a/src/mesa/drivers/dri/swrast/swrast_priv.h
+++ b/src/mesa/drivers/dri/swrast/swrast_priv.h
@@ -124,14 +124,6 @@ swrast_renderbuffer(struct gl_renderbuffer *rb)
 #define PF_R3G3B2     3		/**<  8bpp TrueColor:  3-R, 3-G, 2-B bits */
 #define PF_X8R8G8B8   4		/**< 32bpp TrueColor:  8-R, 8-G, 8-B bits */
 
-/**
- * Renderbuffer pitch alignment (in bits).
- *
- * The xorg loader requires padding images to 32 bits. However, this should
- * become a screen/drawable parameter XXX
- */
-#define PITCH_ALIGN_BITS 32
-
 
 /* swrast_span.c */