Enable use of new DRI interface in Unichrome driver.

1 files changed, 125 insertions, 2 deletions

diff --git a/src/mesa/drivers/dri/unichrome/via_screen.c b/src/mesa/drivers/dri/unichrome/via_screen.c
index bbe570f222..b0d4c57ec0 100644
--- a/src/mesa/drivers/dri/unichrome/via_screen.c
+++ b/src/mesa/drivers/dri/unichrome/via_screen.c
@@ -42,6 +42,11 @@
 #include "via_dri.h"
 extern viaContextPtr current_mesa;
 
+#ifdef USE_NEW_INTERFACE
+static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
+#endif /* USE_NEW_INTERFACE */
+
+
 static drmBufMapPtr via_create_empty_buffers(void)
 {
     drmBufMapPtr retval;
@@ -67,8 +72,7 @@ viaInitDriver(__DRIscreenPrivate *sPriv)
 #ifdef DEBUG    
     if (VIA_DEBUG) fprintf(stderr, "%s - in\n", __FUNCTION__);
 #endif
-    if (!driCheckDriDdxDrmVersions(sPriv, "Via", 4, 0, 4, 0, 1, 1))
-        return GL_FALSE;
+
 
     /* Allocate the private area */
     viaScreen = (viaScreenPrivate *) CALLOC(sizeof(viaScreenPrivate));
@@ -286,6 +290,7 @@ static struct __DriverAPIRec viaAPI = {
  * The __driCreateScreen name is the symbol that libGL.so fetches.
  * Return:  pointer to a __DRIscreenPrivate.
  */
+#if !defined(DRI_NEW_INTERFACE_ONLY)
 #ifndef _SOLO
 void *__driCreateScreen(Display *dpy, int scrn, __DRIscreen *psc,
                         int numConfigs, __GLXvisualConfig *config)
@@ -303,3 +308,121 @@ void *__driCreateScreen(struct DRIDriverRec *driver,
     return (void *) psp;
 }
 #endif
+#endif /* !defined(DRI_NEW_INTERFACE_ONLY) */
+
+
+#ifdef USE_NEW_INTERFACE
+static __GLcontextModes *
+viaFillInModes( unsigned pixel_bits, GLboolean have_back_buffer )
+{
+    __GLcontextModes * modes;
+    __GLcontextModes * m;
+    unsigned num_modes;
+    const unsigned back_buffer_factor = (have_back_buffer) ? 2 : 1;
+    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 */
+    };
+
+    /* The 32-bit depth-buffer mode isn't supported yet, so don't actually
+     * enable it.
+     */
+    static const uint8_t depth_bits_array[4]   = { 0, 16, 24, 32 };
+    static const uint8_t stencil_bits_array[4] = { 0,  0,  8,  0 };
+    const unsigned depth_buffer_factor = 3;
+
+
+    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;
+    }
+
+    return modes;
+}
+#endif /* USE_NEW_INTERFACE */
+
+
+/**
+ * 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( __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 = { 1, 1, 0 };
+
+   if ( ! driCheckDriDdxDrmVersions2( "Unichrome",
+				      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, &viaAPI);
+   if ( psp != NULL ) {
+      create_context_modes = (PFNGLXCREATECONTEXTMODES)
+	  glXGetProcAddress( (const GLubyte *) "__glXCreateContextModes" );
+      if ( create_context_modes != NULL ) {
+	 VIADRIPtr dri_priv = (VIADRIPtr) psp->pDevPriv;
+	 *driver_modes = viaFillInModes( dri_priv->bytesPerPixel * 8,
+					 GL_TRUE );
+      }
+   }
+
+   return (void *) psp;
+}
+#endif /* USE_NEW_INTERFACE */