Merge commit 'origin/master' into gallium-sampler-view

Conflicts:
	src/gallium/auxiliary/util/u_tile.c
	src/gallium/auxiliary/util/u_tile.h
	src/gallium/drivers/identity/id_context.c
	src/gallium/drivers/llvmpipe/lp_setup.c
	src/gallium/drivers/llvmpipe/lp_setup.h
	src/gallium/drivers/softpipe/sp_tex_tile_cache.c
	src/gallium/include/pipe/p_context.h
	src/mesa/state_tracker/st_cb_bitmap.c
	src/mesa/state_tracker/st_cb_drawpixels.c

17 files changed, 162 insertions, 257 deletions

diff --git a/src/gallium/state_trackers/dri/dri_extensions.c b/src/gallium/state_trackers/dri/dri_extensions.c
index 1259813a41..800677a2d1 100644
--- a/src/gallium/state_trackers/dri/dri_extensions.c
+++ b/src/gallium/state_trackers/dri/dri_extensions.c
@@ -33,110 +33,14 @@
 #include "dri_context.h"
 #include "state_tracker/st_context.h"
 
-#define need_GL_ARB_map_buffer_range
-#define need_GL_ARB_multisample
-#define need_GL_ARB_occlusion_query
-#define need_GL_ARB_point_parameters
-#define need_GL_ARB_provoking_vertex
-#define need_GL_ARB_shader_objects
-#define need_GL_ARB_texture_compression
-#define need_GL_ARB_vertex_array_object
-#define need_GL_ARB_vertex_buffer_object
-#define need_GL_ARB_vertex_program
-#define need_GL_ARB_vertex_shader
-#define need_GL_ARB_window_pos
-#define need_GL_EXT_blend_color
-#define need_GL_EXT_blend_equation_separate
-#define need_GL_EXT_blend_func_separate
-#define need_GL_EXT_blend_minmax
-#define need_GL_EXT_cull_vertex
-#define need_GL_EXT_draw_buffers2
-#define need_GL_EXT_fog_coord
-#define need_GL_EXT_framebuffer_object
-#define need_GL_EXT_multi_draw_arrays
-#define need_GL_EXT_provoking_vertex
-#define need_GL_EXT_secondary_color
-#define need_GL_EXT_stencil_two_side
-#define need_GL_APPLE_vertex_array_object
-#define need_GL_NV_vertex_program
-#define need_GL_VERSION_2_0
-#define need_GL_VERSION_2_1
-#include "main/remap_helper.h"
 #include "utils.h"
 
-/**
- * Extension strings exported by the driver.
- */
-static const struct dri_extension card_extensions[] = {
-   {"GL_ARB_fragment_shader", NULL},
-   {"GL_ARB_map_buffer_range", GL_ARB_map_buffer_range_functions},
-   {"GL_ARB_multisample", GL_ARB_multisample_functions},
-   {"GL_ARB_multitexture", NULL},
-   {"GL_ARB_occlusion_query", GL_ARB_occlusion_query_functions},
-   {"GL_ARB_pixel_buffer_object", NULL},
-   {"GL_ARB_provoking_vertex", GL_ARB_provoking_vertex_functions},
-   {"GL_ARB_point_parameters", GL_ARB_point_parameters_functions},
-   {"GL_ARB_shading_language_100", GL_VERSION_2_0_functions },
-   {"GL_ARB_shading_language_120", GL_VERSION_2_1_functions },
-   {"GL_ARB_shader_objects", GL_ARB_shader_objects_functions},
-   {"GL_ARB_texture_border_clamp", NULL},
-   {"GL_ARB_texture_compression", GL_ARB_texture_compression_functions},
-   {"GL_ARB_texture_cube_map", NULL},
-   {"GL_ARB_texture_env_add", NULL},
-   {"GL_ARB_texture_env_combine", NULL},
-   {"GL_ARB_texture_env_dot3", NULL},
-   {"GL_ARB_texture_mirrored_repeat", NULL},
-   {"GL_ARB_texture_non_power_of_two", NULL},
-   {"GL_ARB_texture_rectangle", NULL},
-   {"GL_ARB_vertex_array_object", GL_ARB_vertex_array_object_functions},
-   {"GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions},
-   {"GL_ARB_vertex_shader", GL_ARB_vertex_shader_functions},
-   {"GL_ARB_vertex_program", GL_ARB_vertex_program_functions},
-   {"GL_ARB_window_pos", GL_ARB_window_pos_functions},
-   {"GL_EXT_blend_color", GL_EXT_blend_color_functions},
-   {"GL_EXT_blend_equation_separate", GL_EXT_blend_equation_separate_functions},
-   {"GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions},
-   {"GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions},
-   {"GL_EXT_blend_subtract", NULL},
-   {"GL_EXT_cull_vertex", GL_EXT_cull_vertex_functions},
-   {"GL_EXT_draw_buffers2", GL_EXT_draw_buffers2_functions},
-   {"GL_EXT_fog_coord", GL_EXT_fog_coord_functions},
-   {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions},
-   {"GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions},
-   {"GL_EXT_packed_depth_stencil", NULL},
-   {"GL_EXT_pixel_buffer_object", NULL},
-   {"GL_EXT_provoking_vertex", GL_EXT_provoking_vertex_functions},
-   {"GL_EXT_secondary_color", GL_EXT_secondary_color_functions},
-   {"GL_EXT_stencil_two_side", GL_EXT_stencil_two_side_functions},
-   {"GL_EXT_stencil_wrap", NULL},
-   {"GL_EXT_texture_edge_clamp", NULL},
-   {"GL_EXT_texture_env_combine", NULL},
-   {"GL_EXT_texture_env_dot3", NULL},
-   {"GL_EXT_texture_filter_anisotropic", NULL},
-   {"GL_EXT_texture_lod_bias", NULL},
-   {"GL_3DFX_texture_compression_FXT1", NULL},
-   {"GL_APPLE_client_storage", NULL},
-   {"GL_APPLE_vertex_array_object", GL_APPLE_vertex_array_object_functions},
-   {"GL_MESA_pack_invert", NULL},
-   {"GL_MESA_ycbcr_texture", NULL},
-   {"GL_NV_blend_square", NULL},
-   {"GL_NV_vertex_program", GL_NV_vertex_program_functions},
-   {"GL_NV_vertex_program1_1", NULL},
-   {"GL_SGIS_generate_mipmap", NULL},
-   {NULL, NULL}
-};
-
 void
 dri_init_extensions(struct dri_context *ctx)
 {
-   /* The card_extensions list should be pruned according to the
-    * capabilities of the pipe_screen. This is actually something
-    * that can/should be done inside st_create_context().
-    * XXX Not pruning is very bogus. Always all these extensions above
-    * will be advertized, regardless what st_init_extensions
-    * (which depends on the pipe cap bits) does.
-    */
-   driInitExtensions(ctx->st->ctx, card_extensions, GL_TRUE);
+   /* New extensions should be added in mesa/state_tracker/st_extensions.c
+    * and not in this file. */
+   driInitExtensions(ctx->st->ctx, NULL, GL_FALSE);
 }
 
 /* vim: set sw=3 ts=8 sts=3 expandtab: */
diff --git a/src/gallium/state_trackers/dri/dri_screen.c b/src/gallium/state_trackers/dri/dri_screen.c
index 60bc560049..7ccad8f5dd 100644
--- a/src/gallium/state_trackers/dri/dri_screen.c
+++ b/src/gallium/state_trackers/dri/dri_screen.c
@@ -90,6 +90,9 @@ dri_fill_in_modes(struct dri_screen *screen,
 		  unsigned pixel_bits)
 {
    __DRIconfig **configs = NULL;
+   __DRIconfig **configs_r5g6b5 = NULL;
+   __DRIconfig **configs_a8r8g8b8 = NULL;
+   __DRIconfig **configs_x8r8g8b8 = NULL;
    unsigned num_modes;
    uint8_t depth_bits_array[5];
    uint8_t stencil_bits_array[5];
@@ -127,25 +130,23 @@ dri_fill_in_modes(struct dri_screen *screen,
    pf_x8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8X8_UNORM,
 					       PIPE_TEXTURE_2D,
 					       PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
-
-   /* we support buffers with different depths only if we can tell the driver
-    * the actual depth of each of them. */
-   if (screen->sPriv->dri2.loader
-       && (screen->sPriv->dri2.loader->base.version > 2)
-       && (screen->sPriv->dri2.loader->getBuffersWithFormat != NULL)) {
+   pf_r5g6b5 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B5G6R5_UNORM,
+					     PIPE_TEXTURE_2D,
+					     PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
+
+   /* We can only get a 16 or 32 bit depth buffer with getBuffersWithFormat */
+   if (screen->sPriv->dri2.loader &&
+       (screen->sPriv->dri2.loader->base.version > 2) &&
+       (screen->sPriv->dri2.loader->getBuffersWithFormat != NULL)) {
       pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
                                              PIPE_TEXTURE_2D,
                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
       pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
                                              PIPE_TEXTURE_2D,
                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
-      pf_r5g6b5 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B5G6R5_UNORM,
-                                                PIPE_TEXTURE_2D,
-                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
    } else {
       pf_z16 = FALSE;
       pf_z32 = FALSE;
-      pf_r5g6b5 = FALSE;
    }
 
    if (pf_z16) {
@@ -175,46 +176,48 @@ dri_fill_in_modes(struct dri_screen *screen,
    num_modes =
       depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
 
-   if (pixel_bits == 16 && pf_r5g6b5) {
-      configs = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
-				 depth_bits_array, stencil_bits_array,
-				 depth_buffer_factor, back_buffer_modes,
-				 back_buffer_factor,
-				 msaa_samples_array, msaa_samples_factor,
-				 GL_TRUE);
+   if (pf_r5g6b5)
+      configs_r5g6b5 = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
+                                        depth_bits_array, stencil_bits_array,
+                                        depth_buffer_factor, back_buffer_modes,
+                                        back_buffer_factor,
+                                        msaa_samples_array, msaa_samples_factor,
+                                        GL_TRUE);
+
+   if (pf_a8r8g8b8)
+      configs_a8r8g8b8 = driCreateConfigs(GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
+                                          depth_bits_array,
+                                          stencil_bits_array,
+                                          depth_buffer_factor,
+                                          back_buffer_modes,
+                                          back_buffer_factor,
+                                          msaa_samples_array,
+                                          msaa_samples_factor,
+                                          GL_TRUE);
+
+   if (pf_x8r8g8b8)
+      configs_x8r8g8b8 = driCreateConfigs(GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV,
+                                          depth_bits_array,
+                                          stencil_bits_array,
+                                          depth_buffer_factor,
+                                          back_buffer_modes,
+                                          back_buffer_factor,
+                                          msaa_samples_array,
+                                          msaa_samples_factor,
+                                          GL_TRUE);
+
+   if (pixel_bits == 16) {
+      configs = configs_r5g6b5;
+      if (configs_a8r8g8b8)
+         configs = configs ? driConcatConfigs(configs, configs_a8r8g8b8) : configs_a8r8g8b8;
+      if (configs_x8r8g8b8)
+	 configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
    } else {
-      __DRIconfig **configs_a8r8g8b8 = NULL;
-      __DRIconfig **configs_x8r8g8b8 = NULL;
-
-      if (pf_a8r8g8b8)
-	 configs_a8r8g8b8 = driCreateConfigs(GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
-					     depth_bits_array,
-					     stencil_bits_array,
-					     depth_buffer_factor,
-					     back_buffer_modes,
-					     back_buffer_factor,
-					     msaa_samples_array,
-                                             msaa_samples_factor,
-					     GL_TRUE);
-      if (pf_x8r8g8b8)
-	 configs_x8r8g8b8 = driCreateConfigs(GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV,
-					     depth_bits_array,
-					     stencil_bits_array,
-					     depth_buffer_factor,
-					     back_buffer_modes,
-					     back_buffer_factor,
-					     msaa_samples_array,
-                                             msaa_samples_factor,
-					     GL_TRUE);
-
-      if (configs_a8r8g8b8 && configs_x8r8g8b8)
-	 configs = driConcatConfigs(configs_x8r8g8b8, configs_a8r8g8b8);
-      else if (configs_a8r8g8b8)
-	 configs = configs_a8r8g8b8;
-      else if (configs_x8r8g8b8)
-	 configs = configs_x8r8g8b8;
-      else
-	 configs = NULL;
+      configs = configs_a8r8g8b8;
+      if (configs_x8r8g8b8)
+	 configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
+      if (configs_r5g6b5)
+         configs = configs ? driConcatConfigs(configs, configs_r5g6b5) : configs_r5g6b5;
    }
 
    if (configs == NULL) {
diff --git a/src/gallium/state_trackers/egl/x11/native_ximage.c b/src/gallium/state_trackers/egl/x11/native_ximage.c
index e0d12acabe..c6b16354f9 100644
--- a/src/gallium/state_trackers/egl/x11/native_ximage.c
+++ b/src/gallium/state_trackers/egl/x11/native_ximage.c
@@ -82,6 +82,8 @@ struct ximage_surface {
    int width, height;
    struct ximage_buffer buffers[NUM_NATIVE_ATTACHMENTS];
    uint valid_mask;
+
+   struct pipe_surface *draw_surface;
 };
 
 struct ximage_config {
@@ -266,15 +268,19 @@ ximage_surface_draw_buffer(struct native_surface *nsurf,
 
    assert(xsurf->drawable && xbuf->texture);
 
-   /* what's the cost of surface creation? */
-   psurf = screen->get_tex_surface(screen,
-         xbuf->texture, 0, 0, 0, PIPE_BUFFER_USAGE_CPU_READ);
-   if (!psurf)
-      return FALSE;
+   psurf = xsurf->draw_surface;
+   if (!psurf || psurf->texture != xbuf->texture) {
+      pipe_surface_reference(&xsurf->draw_surface, NULL);
 
-   screen->flush_frontbuffer(screen, psurf, &xbuf->xdraw);
+      psurf = screen->get_tex_surface(screen,
+            xbuf->texture, 0, 0, 0, PIPE_BUFFER_USAGE_CPU_READ);
+      if (!psurf)
+         return FALSE;
 
-   pipe_surface_reference(&psurf, NULL);
+      xsurf->draw_surface = psurf;
+   }
+
+   screen->flush_frontbuffer(screen, psurf, &xbuf->xdraw);
 
    return TRUE;
 }
@@ -371,6 +377,8 @@ ximage_surface_destroy(struct native_surface *nsurf)
    struct ximage_surface *xsurf = ximage_surface(nsurf);
    int i;
 
+   pipe_surface_reference(&xsurf->draw_surface, NULL);
+
    for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++)
       ximage_surface_free_buffer(&xsurf->base, i);
 
diff --git a/src/gallium/state_trackers/python/SConscript b/src/gallium/state_trackers/python/SConscript
index 781f54bf2b..d0d141fd24 100644
--- a/src/gallium/state_trackers/python/SConscript
+++ b/src/gallium/state_trackers/python/SConscript
@@ -3,7 +3,8 @@ import os.path
 
 Import('*')
 
-if 'python' in env['statetrackers']:
+if 'python' in env['statetrackers'] and 0:
+    # FIXME: Disable python state tracker until transfers are done by contexts  
 
     env = env.Clone()
     
diff --git a/src/gallium/state_trackers/vega/api_filters.c b/src/gallium/state_trackers/vega/api_filters.c
index 02248ad433..18e2cc1f25 100644
--- a/src/gallium/state_trackers/vega/api_filters.c
+++ b/src/gallium/state_trackers/vega/api_filters.c
@@ -78,14 +78,14 @@ static INLINE struct pipe_texture *create_texture_1d(struct vg_context *ctx,
 
    { /* upload color_data */
       struct pipe_transfer *transfer =
-         screen->get_tex_transfer(screen, tex,
-                                  0, 0, 0,
-                                  PIPE_TRANSFER_READ_WRITE ,
-                                  0, 0, tex->width0, tex->height0);
-      void *map = screen->transfer_map(screen, transfer);
+         pipe->get_tex_transfer(pipe, tex,
+				0, 0, 0,
+				PIPE_TRANSFER_READ_WRITE ,
+				0, 0, tex->width0, tex->height0);
+      void *map = pipe->transfer_map(pipe, transfer);
       memcpy(map, color_data, sizeof(VGint)*color_data_len);
-      screen->transfer_unmap(screen, transfer);
-      screen->tex_transfer_destroy(transfer);
+      pipe->transfer_unmap(pipe, transfer);
+      pipe->tex_transfer_destroy(pipe, transfer);
    }
 
    return tex;
diff --git a/src/gallium/state_trackers/vega/api_images.c b/src/gallium/state_trackers/vega/api_images.c
index 015241498e..fec473d9d2 100644
--- a/src/gallium/state_trackers/vega/api_images.c
+++ b/src/gallium/state_trackers/vega/api_images.c
@@ -397,7 +397,6 @@ void vgReadPixels(void * data, VGint dataStride,
 {
    struct vg_context *ctx = vg_current_context();
    struct pipe_context *pipe = ctx->pipe;
-   struct pipe_screen *screen = pipe->screen;
 
    struct st_framebuffer *stfb = ctx->draw_buffer;
    struct st_renderbuffer *strb = stfb->strb;
@@ -442,7 +441,7 @@ void vgReadPixels(void * data, VGint dataStride,
    {
       struct pipe_transfer *transfer;
 
-      transfer = screen->get_tex_transfer(screen, strb->texture,  0, 0, 0,
+      transfer = pipe->get_tex_transfer(pipe, strb->texture,  0, 0, 0,
                                           PIPE_TRANSFER_READ,
                                           0, 0, width, height);
 
@@ -451,14 +450,14 @@ void vgReadPixels(void * data, VGint dataStride,
 #if 0
          debug_printf("%d-%d  == %d\n", sy, height, y);
 #endif
-         pipe_get_tile_rgba(transfer, sx, y, width, 1, df);
+         pipe_get_tile_rgba(pipe, transfer, sx, y, width, 1, df);
          y += yStep;
          _vega_pack_rgba_span_float(ctx, width, temp, dataFormat,
                                     dst + yoffset + xoffset);
          dst += dataStride;
       }
 
-      screen->tex_transfer_destroy(transfer);
+      pipe->tex_transfer_destroy(pipe, transfer);
    }
 }
 
diff --git a/src/gallium/state_trackers/vega/image.c b/src/gallium/state_trackers/vega/image.c
index 41c979bfec..a71579cd26 100644
--- a/src/gallium/state_trackers/vega/image.c
+++ b/src/gallium/state_trackers/vega/image.c
@@ -378,7 +378,7 @@ void image_sub_data(struct vg_image *image,
    VGfloat *df = (VGfloat*)temp;
    VGint i;
    struct vg_context *ctx = vg_current_context();
-   struct pipe_screen *screen = ctx->pipe->screen;
+   struct pipe_context *pipe = ctx->pipe;
    struct pipe_texture *texture = image_texture(image);
    VGint xoffset = 0, yoffset = 0;
 
@@ -412,17 +412,17 @@ void image_sub_data(struct vg_image *image,
    }
 
    { /* upload color_data */
-      struct pipe_transfer *transfer = screen->get_tex_transfer(
-         screen, texture, 0, 0, 0,
+      struct pipe_transfer *transfer = pipe->get_tex_transfer(
+         pipe, texture, 0, 0, 0,
          PIPE_TRANSFER_WRITE, 0, 0, texture->width0, texture->height0);
       src += (dataStride * yoffset);
       for (i = 0; i < height; i++) {
          _vega_unpack_float_span_rgba(ctx, width, xoffset, src, dataFormat, temp);
-         pipe_put_tile_rgba(transfer, x+image->x, y+image->y, width, 1, df);
+         pipe_put_tile_rgba(pipe, transfer, x+image->x, y+image->y, width, 1, df);
          y += yStep;
          src += dataStride;
       }
-      screen->tex_transfer_destroy(transfer);
+      pipe->tex_transfer_destroy(pipe, transfer);
    }
 }
 
@@ -435,7 +435,6 @@ void image_get_sub_data(struct vg_image * image,
 {
    struct vg_context *ctx = vg_current_context();
    struct pipe_context *pipe = ctx->pipe;
-   struct pipe_screen *screen = pipe->screen;
    VGfloat temp[VEGA_MAX_IMAGE_WIDTH][4];
    VGfloat *df = (VGfloat*)temp;
    VGint y = 0, yStep = 1;
@@ -444,7 +443,7 @@ void image_get_sub_data(struct vg_image * image,
 
    {
       struct pipe_transfer *transfer =
-         screen->get_tex_transfer(screen,
+         pipe->get_tex_transfer(pipe,
                                   image->texture,  0, 0, 0,
                                   PIPE_TRANSFER_READ,
                                   0, 0,
@@ -455,13 +454,13 @@ void image_get_sub_data(struct vg_image * image,
 #if 0
          debug_printf("%d-%d  == %d\n", sy, height, y);
 #endif
-         pipe_get_tile_rgba(transfer, sx+image->x, y, width, 1, df);
+         pipe_get_tile_rgba(pipe, transfer, sx+image->x, y, width, 1, df);
          y += yStep;
          _vega_pack_rgba_span_float(ctx, width, temp, dataFormat, dst);
          dst += dataStride;
       }
 
-      screen->tex_transfer_destroy(transfer);
+      pipe->tex_transfer_destroy(pipe, transfer);
    }
 }
 
diff --git a/src/gallium/state_trackers/vega/paint.c b/src/gallium/state_trackers/vega/paint.c
index cdb87d3bf6..dc56b8c5f3 100644
--- a/src/gallium/state_trackers/vega/paint.c
+++ b/src/gallium/state_trackers/vega/paint.c
@@ -164,10 +164,10 @@ static INLINE struct pipe_texture *create_gradient_texture(struct vg_paint *p)
       struct pipe_transfer *transfer =
          st_no_flush_get_tex_transfer(p->base.ctx, tex, 0, 0, 0,
                                       PIPE_TRANSFER_WRITE, 0, 0, 1024, 1);
-      void *map = screen->transfer_map(screen, transfer);
+      void *map = pipe->transfer_map(pipe, transfer);
       memcpy(map, p->gradient.color_data, sizeof(VGint)*1024);
-      screen->transfer_unmap(screen, transfer);
-      screen->tex_transfer_destroy(transfer);
+      pipe->transfer_unmap(pipe, transfer);
+      pipe->tex_transfer_destroy(pipe, transfer);
    }
 
    return tex;
diff --git a/src/gallium/state_trackers/vega/st_inlines.h b/src/gallium/state_trackers/vega/st_inlines.h
index 419151c3ae..4d12a4efdd 100644
--- a/src/gallium/state_trackers/vega/st_inlines.h
+++ b/src/gallium/state_trackers/vega/st_inlines.h
@@ -51,7 +51,6 @@ st_cond_flush_get_tex_transfer(struct vg_context *st,
 			       unsigned int x, unsigned int y,
 			       unsigned int w, unsigned int h)
 {
-   struct pipe_screen *screen = st->pipe->screen;
    struct pipe_context *pipe = st->pipe;
    unsigned referenced =
       pipe->is_texture_referenced(pipe, pt, face, level);
@@ -60,7 +59,7 @@ st_cond_flush_get_tex_transfer(struct vg_context *st,
 		      (usage & PIPE_TRANSFER_WRITE)))
       vgFlush();
 
-   return screen->get_tex_transfer(screen, pt, face, level, zslice, usage,
+   return pipe->get_tex_transfer(pipe, pt, face, level, zslice, usage,
 				   x, y, w, h);
 }
 
@@ -74,10 +73,10 @@ st_no_flush_get_tex_transfer(struct vg_context *st,
 			     unsigned int x, unsigned int y,
 			     unsigned int w, unsigned int h)
 {
-   struct pipe_screen *screen = st->pipe->screen;
+   struct pipe_context *pipe = st->pipe;
 
-   return screen->get_tex_transfer(screen, pt, face, level,
-				   zslice, usage, x, y, w, h);
+   return pipe->get_tex_transfer(pipe, pt, face, level,
+				 zslice, usage, x, y, w, h);
 }
 
 static INLINE void *
diff --git a/src/gallium/state_trackers/vega/vg_tracker.c b/src/gallium/state_trackers/vega/vg_tracker.c
index a002e50faf..ea5c2ce41f 100644
--- a/src/gallium/state_trackers/vega/vg_tracker.c
+++ b/src/gallium/state_trackers/vega/vg_tracker.c
@@ -380,16 +380,8 @@ boolean st_make_current(struct vg_context *st,
                         void *winsys_drawable_handle)
 {
    vg_set_current_context(st);
-   if (st) {
+   if (st)
       st->draw_buffer = draw;
-
-      /* VG state tracker doesn't seem to do front-buffer rendering
-       * (no calls to flush_frontbuffer).  If it ever did start doing
-       * that, it would need to pass this value down in the
-       * flush_frontbuffer call:
-       */
-      st->pipe->priv = winsys_drawable_handle;
-   }
    return VG_TRUE;
 }
 
diff --git a/src/gallium/state_trackers/wgl/stw_framebuffer.h b/src/gallium/state_trackers/wgl/stw_framebuffer.h
index 08cc4973bc..e61e9bf9c2 100644
--- a/src/gallium/state_trackers/wgl/stw_framebuffer.h
+++ b/src/gallium/state_trackers/wgl/stw_framebuffer.h
@@ -45,7 +45,7 @@ struct stw_framebuffer
    /**
     * This mutex has two purposes:
     * - protect the access to the mutable data members below
-    * - prevent the the framebuffer from being deleted while being accessed.
+    * - prevent the framebuffer from being deleted while being accessed.
     * 
     * It is OK to lock this mutex while holding the stw_device::fb_mutex lock, 
     * but the opposite must never happen.
diff --git a/src/gallium/state_trackers/xorg/xorg_composite.c b/src/gallium/state_trackers/xorg/xorg_composite.c
index c50873c150..715a5e7b94 100644
--- a/src/gallium/state_trackers/xorg/xorg_composite.c
+++ b/src/gallium/state_trackers/xorg/xorg_composite.c
@@ -359,14 +359,6 @@ bind_samplers(struct exa_context *exa, int op,
 
    exa->num_bound_samplers = 0;
 
-#if 0
-   if ((pSrc && (exa->pipe->is_texture_referenced(exa->pipe, pSrc->tex, 0, 0) &
-                 PIPE_REFERENCED_FOR_WRITE)) ||
-       (pMask && (exa->pipe->is_texture_referenced(exa->pipe, pMask->tex, 0, 0) &
-        PIPE_REFERENCED_FOR_WRITE)))
-      xorg_exa_flush(exa, PIPE_FLUSH_RENDER_CACHE, NULL);
-#endif
-
    memset(&src_sampler, 0, sizeof(struct pipe_sampler_state));
    memset(&mask_sampler, 0, sizeof(struct pipe_sampler_state));
 
diff --git a/src/gallium/state_trackers/xorg/xorg_crtc.c b/src/gallium/state_trackers/xorg/xorg_crtc.c
index 44f7da0f96..eef428232b 100644
--- a/src/gallium/state_trackers/xorg/xorg_crtc.c
+++ b/src/gallium/state_trackers/xorg/xorg_crtc.c
@@ -39,6 +39,7 @@
 #include <xf86.h>
 #include <xf86i2c.h>
 #include <xf86Crtc.h>
+#include <cursorstr.h>
 #include "xorg_tracker.h"
 #include "xf86Modes.h"
 
@@ -219,16 +220,16 @@ crtc_load_cursor_argb_ga3d(xf86CrtcPtr crtc, CARD32 * image)
 	crtcp->cursor_handle = whandle.handle;
     }
 
-    transfer = ms->screen->get_tex_transfer(ms->screen, crtcp->cursor_tex,
-					    0, 0, 0,
-					    PIPE_TRANSFER_WRITE,
-					    0, 0, 64, 64);
-    ptr = ms->screen->transfer_map(ms->screen, transfer);
+    transfer = ms->ctx->get_tex_transfer(ms->ctx, crtcp->cursor_tex,
+                                         0, 0, 0,
+                                         PIPE_TRANSFER_WRITE,
+                                         0, 0, 64, 64);
+    ptr = ms->ctx->transfer_map(ms->ctx, transfer);
     util_copy_rect(ptr, crtcp->cursor_tex->format,
 		   transfer->stride, 0, 0,
 		   64, 64, (void*)image, 64 * 4, 0, 0);
-    ms->screen->transfer_unmap(ms->screen, transfer);
-    ms->screen->tex_transfer_destroy(transfer);
+    ms->ctx->transfer_unmap(ms->ctx, transfer);
+    ms->ctx->tex_transfer_destroy(ms->ctx, transfer);
 }
 
 #if HAVE_LIBKMS
@@ -276,7 +277,21 @@ err_bo_destroy:
 static void
 crtc_load_cursor_argb(xf86CrtcPtr crtc, CARD32 * image)
 {
+    xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(crtc->scrn);
     modesettingPtr ms = modesettingPTR(crtc->scrn);
+
+    /* Older X servers have cursor reference counting bugs leading to use of
+     * freed memory and consequently random crashes. Should be fixed as of
+     * xserver 1.8, but this workaround shouldn't hurt anyway.
+     */
+    if (config->cursor)
+       config->cursor->refcnt++;
+
+    if (ms->cursor)
+       FreeCursor(ms->cursor, None);
+
+    ms->cursor = config->cursor;
+
     if (ms->screen)
 	crtc_load_cursor_argb_ga3d(crtc, image);
 #ifdef HAVE_LIBKMS
diff --git a/src/gallium/state_trackers/xorg/xorg_driver.c b/src/gallium/state_trackers/xorg/xorg_driver.c
index 004a28f00e..8ac5179545 100644
--- a/src/gallium/state_trackers/xorg/xorg_driver.c
+++ b/src/gallium/state_trackers/xorg/xorg_driver.c
@@ -922,6 +922,11 @@ drv_close_screen(int scrnIndex, ScreenPtr pScreen)
 	drv_leave_vt(scrnIndex, 0);
     }
 
+    if (ms->cursor) {
+       FreeCursor(ms->cursor, None);
+       ms->cursor = NULL;
+    }
+
     if (cust && cust->winsys_screen_close)
 	cust->winsys_screen_close(cust);
 
diff --git a/src/gallium/state_trackers/xorg/xorg_exa.c b/src/gallium/state_trackers/xorg/xorg_exa.c
index a7ffe3f499..bdec0e254f 100644
--- a/src/gallium/state_trackers/xorg/xorg_exa.c
+++ b/src/gallium/state_trackers/xorg/xorg_exa.c
@@ -188,11 +188,7 @@ ExaDownloadFromScreen(PixmapPtr pPix, int x,  int y, int w,  int h, char *dst,
     if (!priv || !priv->tex)
 	return FALSE;
 
-    if (exa->pipe->is_texture_referenced(exa->pipe, priv->tex, 0, 0) &
-	PIPE_REFERENCED_FOR_WRITE)
-	exa->pipe->flush(exa->pipe, 0, NULL);
-
-    transfer = exa->scrn->get_tex_transfer(exa->scrn, priv->tex, 0, 0, 0,
+    transfer = exa->pipe->get_tex_transfer(exa->pipe, priv->tex, 0, 0, 0,
 					   PIPE_TRANSFER_READ, x, y, w, h);
     if (!transfer)
 	return FALSE;
@@ -203,11 +199,11 @@ ExaDownloadFromScreen(PixmapPtr pPix, int x,  int y, int w,  int h, char *dst,
 #endif
 
     util_copy_rect((unsigned char*)dst, priv->tex->format, dst_pitch, 0, 0,
-		   w, h, exa->scrn->transfer_map(exa->scrn, transfer),
+		   w, h, exa->pipe->transfer_map(exa->pipe, transfer),
 		   transfer->stride, 0, 0);
 
-    exa->scrn->transfer_unmap(exa->scrn, transfer);
-    exa->scrn->tex_transfer_destroy(transfer);
+    exa->pipe->transfer_unmap(exa->pipe, transfer);
+    exa->pipe->tex_transfer_destroy(exa->pipe, transfer);
 
     return TRUE;
 }
@@ -226,12 +222,7 @@ ExaUploadToScreen(PixmapPtr pPix, int x, int y, int w, int h, char *src,
     if (!priv || !priv->tex)
 	return FALSE;
 
-    /* make sure that any pending operations are flushed to hardware */
-    if (exa->pipe->is_texture_referenced(exa->pipe, priv->tex, 0, 0) &
-	(PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE))
-	xorg_exa_flush(exa, 0, NULL);
-
-    transfer = exa->scrn->get_tex_transfer(exa->scrn, priv->tex, 0, 0, 0,
+    transfer = exa->pipe->get_tex_transfer(exa->pipe, priv->tex, 0, 0, 0,
 					   PIPE_TRANSFER_WRITE, x, y, w, h);
     if (!transfer)
 	return FALSE;
@@ -241,12 +232,12 @@ ExaUploadToScreen(PixmapPtr pPix, int x, int y, int w, int h, char *src,
                  x, y, w, h, src_pitch);
 #endif
 
-    util_copy_rect(exa->scrn->transfer_map(exa->scrn, transfer),
+    util_copy_rect(exa->pipe->transfer_map(exa->pipe, transfer),
 		   priv->tex->format, transfer->stride, 0, 0, w, h,
 		   (unsigned char*)src, src_pitch, 0, 0);
 
-    exa->scrn->transfer_unmap(exa->scrn, transfer);
-    exa->scrn->tex_transfer_destroy(transfer);
+    exa->pipe->transfer_unmap(exa->pipe, transfer);
+    exa->pipe->tex_transfer_destroy(exa->pipe, transfer);
 
     return TRUE;
 }
@@ -270,15 +261,11 @@ ExaPrepareAccess(PixmapPtr pPix, int index)
 
     if (priv->map_count == 0)
     {
-	if (exa->pipe->is_texture_referenced(exa->pipe, priv->tex, 0, 0) &
-	    PIPE_REFERENCED_FOR_WRITE)
-	    exa->pipe->flush(exa->pipe, 0, NULL);
-
         assert(pPix->drawable.width <= priv->tex->width0);
         assert(pPix->drawable.height <= priv->tex->height0);
 
 	priv->map_transfer =
-	    exa->scrn->get_tex_transfer(exa->scrn, priv->tex, 0, 0, 0,
+	    exa->pipe->get_tex_transfer(exa->pipe, priv->tex, 0, 0, 0,
 #ifdef EXA_MIXED_PIXMAPS
 					PIPE_TRANSFER_MAP_DIRECTLY |
 #endif
@@ -294,7 +281,7 @@ ExaPrepareAccess(PixmapPtr pPix, int index)
 #endif
 
 	pPix->devPrivate.ptr =
-	    exa->scrn->transfer_map(exa->scrn, priv->map_transfer);
+	    exa->pipe->transfer_map(exa->pipe, priv->map_transfer);
 	pPix->devKind = priv->map_transfer->stride;
     }
 
@@ -321,8 +308,8 @@ ExaFinishAccess(PixmapPtr pPix, int index)
 
     if (--priv->map_count == 0) {
 	assert(priv->map_transfer);
-	exa->scrn->transfer_unmap(exa->scrn, priv->map_transfer);
-	exa->scrn->tex_transfer_destroy(priv->map_transfer);
+	exa->pipe->transfer_unmap(exa->pipe, priv->map_transfer);
+	exa->pipe->tex_transfer_destroy(exa->pipe, priv->map_transfer);
 	priv->map_transfer = NULL;
 	pPix->devPrivate.ptr = NULL;
     }
diff --git a/src/gallium/state_trackers/xorg/xorg_tracker.h b/src/gallium/state_trackers/xorg/xorg_tracker.h
index 2f5cc64d9c..c1884ebd11 100644
--- a/src/gallium/state_trackers/xorg/xorg_tracker.h
+++ b/src/gallium/state_trackers/xorg/xorg_tracker.h
@@ -90,6 +90,7 @@ typedef struct _modesettingRec
 
     Bool noAccel;
     Bool SWCursor;
+    CursorPtr cursor;
     CloseScreenProcPtr CloseScreen;
 
     /* Broken-out options. */
diff --git a/src/gallium/state_trackers/xorg/xorg_xv.c b/src/gallium/state_trackers/xorg/xorg_xv.c
index e37a1c3959..5a195cb482 100644
--- a/src/gallium/state_trackers/xorg/xorg_xv.c
+++ b/src/gallium/state_trackers/xorg/xorg_xv.c
@@ -275,28 +275,28 @@ copy_packed_data(ScrnInfoPtr pScrn,
    int i, j;
    struct pipe_texture **dst = port->yuv[port->current_set];
    struct pipe_transfer *ytrans, *utrans, *vtrans;
-   struct pipe_screen *screen = port->r->pipe->screen;
+   struct pipe_context *pipe = port->r->pipe;
    char *ymap, *vmap, *umap;
    unsigned char y1, y2, u, v;
    int yidx, uidx, vidx;
    int y_array_size = w * h;
 
-   ytrans = screen->get_tex_transfer(screen, dst[0],
-                                     0, 0, 0,
-                                     PIPE_TRANSFER_WRITE,
-                                     left, top, w, h);
-   utrans = screen->get_tex_transfer(screen, dst[1],
-                                     0, 0, 0,
-                                     PIPE_TRANSFER_WRITE,
-                                     left, top, w, h);
-   vtrans = screen->get_tex_transfer(screen, dst[2],
-                                     0, 0, 0,
-                                     PIPE_TRANSFER_WRITE,
-                                     left, top, w, h);
-
-   ymap = (char*)screen->transfer_map(screen, ytrans);
-   umap = (char*)screen->transfer_map(screen, utrans);
-   vmap = (char*)screen->transfer_map(screen, vtrans);
+   ytrans = pipe->get_tex_transfer(pipe, dst[0],
+                                   0, 0, 0,
+                                   PIPE_TRANSFER_WRITE,
+                                   left, top, w, h);
+   utrans = pipe->get_tex_transfer(pipe, dst[1],
+                                   0, 0, 0,
+                                   PIPE_TRANSFER_WRITE,
+                                   left, top, w, h);
+   vtrans = pipe->get_tex_transfer(pipe, dst[2],
+                                   0, 0, 0,
+                                   PIPE_TRANSFER_WRITE,
+                                   left, top, w, h);
+
+   ymap = (char*)pipe->transfer_map(pipe, ytrans);
+   umap = (char*)pipe->transfer_map(pipe, utrans);
+   vmap = (char*)pipe->transfer_map(pipe, vtrans);
 
    yidx = uidx = vidx = 0;
 
@@ -362,12 +362,12 @@ copy_packed_data(ScrnInfoPtr pScrn,
       break;
    }
 
-   screen->transfer_unmap(screen, ytrans);
-   screen->transfer_unmap(screen, utrans);
-   screen->transfer_unmap(screen, vtrans);
-   screen->tex_transfer_destroy(ytrans);
-   screen->tex_transfer_destroy(utrans);
-   screen->tex_transfer_destroy(vtrans);
+   pipe->transfer_unmap(pipe, ytrans);
+   pipe->transfer_unmap(pipe, utrans);
+   pipe->transfer_unmap(pipe, vtrans);
+   pipe->tex_transfer_destroy(pipe, ytrans);
+   pipe->tex_transfer_destroy(pipe, utrans);
+   pipe->tex_transfer_destroy(pipe, vtrans);
 }