Enable use of new DRI interface in MGA driver.

1 files changed, 175 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/mga/mga_xmesa.c b/src/mesa/drivers/dri/mga/mga_xmesa.c
index 169615d0c0d..5e7d8cbbb1a 100644
--- a/src/mesa/drivers/dri/mga/mga_xmesa.c
+++ b/src/mesa/drivers/dri/mga/mga_xmesa.c
@@ -77,12 +77,137 @@ DRI_CONF_BEGIN
 DRI_CONF_END;
 static const GLuint __driNConfigOptions = 3;
 
+#ifdef USE_NEW_INTERFACE
+static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
+#endif /* USE_NEW_INTERFACE */
+
 #ifndef MGA_DEBUG
 int MGA_DEBUG = 0;
 #endif
 
 static int getSwapInfo( __DRIdrawablePrivate *dPriv, __DRIswapInfo * sInfo );
 
+#ifdef USE_NEW_INTERFACE
+static __GLcontextModes * fill_in_modes( __GLcontextModes * modes,
+					 unsigned pixel_bits, 
+					 unsigned depth_bits,
+					 unsigned stencil_bits,
+					 const GLenum * db_modes,
+					 unsigned num_db_modes,
+					 int visType )
+{
+    static const uint8_t bits[2][4] = {
+	{          5,          6,          5,          0 },
+	{          8,          8,          8,          0 }
+    };
+
+    static const uint32_t masks[2][4] = {
+	{ 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 },
+	{ 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000 }
+    };
+
+    unsigned   i;
+    unsigned   j;
+    const unsigned index = ((pixel_bits + 15) / 16) - 1;
+
+    for ( i = 0 ; i < num_db_modes ; i++ ) {
+	for ( j = 0 ; j < 2 ; j++ ) {
+
+	    modes->redBits   = bits[index][0];
+	    modes->greenBits = bits[index][1];
+	    modes->blueBits  = bits[index][2];
+	    modes->alphaBits = bits[index][3];
+	    modes->redMask   = masks[index][0];
+	    modes->greenMask = masks[index][1];
+	    modes->blueMask  = masks[index][2];
+	    modes->alphaMask = masks[index][3];
+	    modes->rgbBits   = modes->redBits + modes->greenBits
+		+ modes->blueBits;
+
+	    modes->accumRedBits   = 16 * j;
+	    modes->accumGreenBits = 16 * j;
+	    modes->accumBlueBits  = 16 * j;
+	    modes->accumAlphaBits = 0;
+	    modes->visualRating = (j == 0) ? GLX_NONE : GLX_SLOW_CONFIG;
+
+	    modes->stencilBits = stencil_bits;
+	    modes->depthBits = depth_bits;
+
+	    modes->visualType = visType;
+	    modes->renderType = GLX_RGBA_BIT;
+	    modes->drawableType = GLX_WINDOW_BIT;
+	    modes->rgbMode = GL_TRUE;
+
+	    if ( db_modes[i] == GLX_NONE ) {
+		modes->doubleBufferMode = GL_FALSE;
+	    }
+	    else {
+		modes->doubleBufferMode = GL_TRUE;
+		modes->swapMethod = db_modes[i];
+	    }
+
+	    modes = modes->next;
+	}
+    }
+    
+    return modes;
+}
+#endif /* USE_NEW_INTERFACE */
+
+
+#ifdef USE_NEW_INTERFACE
+static __GLcontextModes *
+mgaFillInModes( unsigned pixel_bits, unsigned depth_bits,
+		unsigned stencil_bits, GLboolean have_back_buffer )
+{
+    __GLcontextModes * modes;
+    __GLcontextModes * m;
+    unsigned num_modes;
+    unsigned depth_buffer_factor;
+    unsigned back_buffer_factor;
+    unsigned i;
+
+    /* GLX_SWAP_COPY_OML is only supported because the MGA driver doesn't
+     * support pageflipping at all.
+     */
+    static const GLenum back_buffer_modes[] = {
+	GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
+    };
+
+    int depth_buffer_modes[2][2] = {
+	{ 0, 0 },
+	{ 0, 0 }
+    };
+
+    depth_buffer_modes[1][0] = depth_bits;
+    depth_buffer_modes[1][1] = stencil_bits;
+
+    depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 2 : 1;
+    back_buffer_factor  = (have_back_buffer) ? 2 : 1;
+
+    num_modes = depth_buffer_factor * back_buffer_factor * 4;
+
+    modes = (*create_context_modes)( num_modes, sizeof( __GLcontextModes ) );
+    m = modes;
+    for ( i = 0 ; i < depth_buffer_factor ; i++ ) {
+	m = fill_in_modes( m, pixel_bits, 
+			   depth_buffer_modes[i][0], depth_buffer_modes[i][1],
+			   back_buffer_modes, back_buffer_factor,
+			   GLX_TRUE_COLOR );
+    }
+
+    for ( i = 0 ; i < depth_buffer_factor ; i++ ) {
+	m = fill_in_modes( m, pixel_bits, 
+			   depth_buffer_modes[i][0], depth_buffer_modes[i][1],
+			   back_buffer_modes, back_buffer_factor,
+			   GLX_DIRECT_COLOR );
+    }
+
+    return modes;
+}
+#endif /* USE_NEW_INTERFACE */
+
+
 static GLboolean
 mgaInitDriver(__DRIscreenPrivate *sPriv)
 {
@@ -136,6 +261,11 @@ mgaInitDriver(__DRIscreenPrivate *sPriv)
 
 	 (*glx_enable_extension)( psc, "GLX_SGI_make_current_read" );
 	 (*glx_enable_extension)( psc, "GLX_MESA_swap_frame_usage" );
+
+	 if ( driCompareGLXAPIVersion( 20030915 ) >= 0 ) {
+	    (*glx_enable_extension)( psc, "GLX_SGIX_fbconfig" );
+	    (*glx_enable_extension)( psc, "GLX_OML_swap_method" );
+	 }
       }
    }
 #endif
@@ -793,6 +923,51 @@ void *__driCreateScreen(struct DRIDriverRec *driver,
 
 
 /**
+ * This is the bootstrap function for the driver.  libGL supplies all of the
+ * requisite information about the system, and the driver initializes itself.
+ * This routine also fills in the linked list pointed to by \c driver_modes
+ * with the \c __GLcontextModes that the driver can support for windows or
+ * pbuffers.
+ * 
+ * \return A pointer to a \c __DRIscreenPrivate on success, or \c NULL on 
+ *         failure.
+ */
+#ifdef USE_NEW_INTERFACE
+void * __driCreateNewScreen( Display *dpy, int scrn, __DRIscreen *psc,
+			     const __GLcontextModes * modes,
+			     const __DRIversion * ddx_version,
+			     const __DRIversion * dri_version,
+			     const __DRIversion * drm_version,
+			     const __DRIframebuffer * frame_buffer,
+			     drmAddress pSAREA, int fd, 
+			     int internal_api_version,
+			     __GLcontextModes ** driver_modes )
+			     
+{
+   __DRIscreenPrivate *psp;
+
+   psp = __driUtilCreateNewScreen(dpy, scrn, psc, NULL,
+				  ddx_version, dri_version, drm_version,
+				  frame_buffer, pSAREA, fd,
+				  internal_api_version, &mgaAPI);
+
+
+   create_context_modes = 
+       (PFNGLXCREATECONTEXTMODES) glXGetProcAddress( (const GLubyte *) "__glXCreateContextModes" );
+   if ( create_context_modes != NULL ) {
+      MGADRIPtr dri_priv = (MGADRIPtr) psp->pDevPriv;
+      *driver_modes = mgaFillInModes( dri_priv->cpp * 8,
+				      (dri_priv->cpp == 2) ? 16 : 24,
+				      (dri_priv->cpp == 2) ? 0  : 8,
+				      (dri_priv->backOffset != dri_priv->depthOffset) );
+   }
+
+   return (void *) psp;
+}
+#endif /* USE_NEW_INTERFACE */
+
+
+/**
  * Get information about previous buffer swaps.
  */
 static int