Enable use of new DRI interface in Rage128 driver.

1 files changed, 142 insertions, 2 deletions

diff --git a/src/mesa/drivers/dri/r128/r128_screen.c b/src/mesa/drivers/dri/r128/r128_screen.c
index 26185fa062..624d67f9ba 100644
--- a/src/mesa/drivers/dri/r128/r128_screen.c
+++ b/src/mesa/drivers/dri/r128/r128_screen.c
@@ -87,6 +87,9 @@ static const GLuint __driNConfigOptions = 2;
 #define PCI_CHIP_RAGE128RL	0x524C
 #endif
 
+#ifdef USE_NEW_INTERFACE
+static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
+#endif /* USE_NEW_INTERFACE */
 
 /* Create the device specific screen private data struct.
  */
@@ -96,8 +99,6 @@ r128CreateScreen( __DRIscreenPrivate *sPriv )
    r128ScreenPtr r128Screen;
    R128DRIPtr r128DRIPriv = (R128DRIPtr)sPriv->pDevPriv;
 
-   if ( ! driCheckDriDdxDrmVersions( sPriv, "Rage128", 4, 0, 4, 0, 2, 2 ) )
-      return NULL;
 
    /* Allocate the private area */
    r128Screen = (r128ScreenPtr) CALLOC( sizeof(*r128Screen) );
@@ -376,6 +377,7 @@ static struct __DriverAPIRec r128API = {
 };
 
 
+#ifndef DRI_NEW_INTERFACE_ONLY
 /*
  * This is the bootstrap function for the driver.
  * The __driCreateScreen name is the symbol that libGL.so fetches.
@@ -398,3 +400,141 @@ void *__driCreateScreen(struct DRIDriverRec *driver,
    return (void *) psp;
 }
 #endif
+#endif /* DRI_NEW_INTERFACE_ONLY */
+
+
+#ifdef USE_NEW_INTERFACE
+static __GLcontextModes *
+r128FillInModes( 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;
+    GLenum fb_format;
+    GLenum fb_type;
+
+    /* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
+     * enough to add support.  Basically, if a context is created with an
+     * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
+     * will never be used.
+     */
+    static const GLenum back_buffer_modes[] = {
+	GLX_NONE, GLX_SWAP_UNDEFINED_OML /*, GLX_SWAP_COPY_OML */
+    };
+
+    uint8_t depth_bits_array[2];
+    uint8_t stencil_bits_array[2];
+
+
+    depth_bits_array[0] = depth_bits;
+    depth_bits_array[1] = depth_bits;
+    
+    /* Just like with the accumulation buffer, always provide some modes
+     * with a stencil buffer.  It will be a sw fallback, but some apps won't
+     * care about that.
+     */
+    stencil_bits_array[0] = 0;
+    stencil_bits_array[1] = (stencil_bits == 0) ? 8 : 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;
+
+    if ( pixel_bits == 16 ) {
+        fb_format = GL_RGB;
+        fb_type = GL_UNSIGNED_SHORT_5_6_5;
+    }
+    else {
+        fb_format = GL_BGR;
+        fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
+    }
+
+    modes = (*create_context_modes)( num_modes, sizeof( __GLcontextModes ) );
+    m = modes;
+    if ( ! driFillInModes( & m, fb_format, fb_type,
+			   depth_bits_array, stencil_bits_array, depth_buffer_factor,
+			   back_buffer_modes, back_buffer_factor,
+			   GLX_TRUE_COLOR ) ) {
+	fprintf( stderr, "[%s:%u] Error creating FBConfig!\n",
+		 __func__, __LINE__ );
+	return NULL;
+    }
+
+    if ( ! driFillInModes( & m, fb_format, fb_type,
+			   depth_bits_array, stencil_bits_array, depth_buffer_factor,
+			   back_buffer_modes, back_buffer_factor,
+			   GLX_DIRECT_COLOR ) ) {
+	fprintf( stderr, "[%s:%u] Error creating FBConfig!\n",
+		 __func__, __LINE__ );
+	return NULL;
+    }
+
+    /* Mark the visual as slow if there are "fake" stencil bits.
+     */
+    for ( m = modes ; m != NULL ; m = m->next ) {
+	if ( (m->stencilBits != 0) && (m->stencilBits != stencil_bits) ) {
+	    m->visualRating = GLX_SLOW_CONFIG;
+	}
+    }
+
+    return modes;
+}
+
+
+/**
+ * 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.
+ */
+void * __driCreateNewScreen( __DRInativeDisplay *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;
+   static const __DRIversion ddx_expected = { 4, 0, 0 };
+   static const __DRIversion dri_expected = { 4, 0, 0 };
+   static const __DRIversion drm_expected = { 2, 2, 0 };
+
+
+   if ( ! driCheckDriDdxDrmVersions2( "Rage128",
+				      dri_version, & dri_expected,
+				      ddx_version, & ddx_expected,
+				      drm_version, & drm_expected ) ) {
+      return NULL;
+   }
+      
+   psp = __driUtilCreateNewScreen(dpy, scrn, psc, NULL,
+				  ddx_version, dri_version, drm_version,
+				  frame_buffer, pSAREA, fd,
+				  internal_api_version, &r128API);
+   if ( psp != NULL ) {
+      create_context_modes = (PFNGLXCREATECONTEXTMODES)
+	  glXGetProcAddress( (const GLubyte *) "__glXCreateContextModes" );
+      if ( create_context_modes != NULL ) {
+	 R128DRIPtr dri_priv = (R128DRIPtr) psp->pDevPriv;
+	 *driver_modes = r128FillInModes( dri_priv->bpp,
+					  (dri_priv->bpp == 16) ? 16 : 24,
+					  (dri_priv->bpp == 16) ? 0  : 8,
+					  (dri_priv->backOffset != dri_priv->depthOffset) );
+      }
+   }
+
+   return (void *) psp;
+}
+#endif /* USE_NEW_INTERFACE */