diff options
Diffstat (limited to 'src/mesa/drivers/dri/swrast/swrast.c')
| -rw-r--r-- | src/mesa/drivers/dri/swrast/swrast.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/src/mesa/drivers/dri/swrast/swrast.c b/src/mesa/drivers/dri/swrast/swrast.c index e9ca99a86f..8b68281fab 100644 --- a/src/mesa/drivers/dri/swrast/swrast.c +++ b/src/mesa/drivers/dri/swrast/swrast.c @@ -206,12 +206,20 @@ swrast_delete_renderbuffer(struct gl_renderbuffer *rb) free(rb); } +/* see bytes_per_line in libGL */ +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 +227,7 @@ 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 +401,10 @@ 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) |