mesa: merge gallium-0.2 into gallium-master-merge

Merge commit 'origin/gallium-0.2' into gallium-master-merge

Conflicts:

	Makefile
	docs/relnotes-7.4.html
	docs/relnotes.html
	src/mesa/drivers/dri/i965/brw_wm.h
	src/mesa/main/imports.c
	src/mesa/main/mtypes.h
	src/mesa/main/texcompress.c
	src/mesa/main/texenvprogram.c
	src/mesa/main/version.h
	src/mesa/vbo/vbo_exec_api.c
	src/mesa/vbo/vbo_save_draw.c

7 files changed, 600 insertions, 0 deletions

diff --git a/src/gallium/winsys/drm/nouveau/dri/Makefile b/src/gallium/winsys/drm/nouveau/dri/Makefile
new file mode 100644
index 00000000000..3f3553b61d2
--- /dev/null
+++ b/src/gallium/winsys/drm/nouveau/dri/Makefile
@@ -0,0 +1,34 @@
+TOP = ../../../../../..
+include $(TOP)/configs/current
+
+LIBNAME = nouveau_dri.so
+
+MINIGLX_SOURCES =
+
+PIPE_DRIVERS = \
+	$(TOP)/src/gallium/drivers/softpipe/libsoftpipe.a \
+	$(TOP)/src/gallium/drivers/nv04/libnv04.a \
+	$(TOP)/src/gallium/drivers/nv10/libnv10.a \
+	$(TOP)/src/gallium/drivers/nv20/libnv20.a \
+	$(TOP)/src/gallium/drivers/nv30/libnv30.a \
+	$(TOP)/src/gallium/drivers/nv40/libnv40.a \
+	$(TOP)/src/gallium/drivers/nv50/libnv50.a
+
+DRIVER_SOURCES = \
+	nouveau_context_dri.c \
+	nouveau_screen_dri.c \
+	nouveau_swapbuffers.c \
+	../common/libnouveaudrm.a
+
+C_SOURCES = \
+	$(COMMON_GALLIUM_SOURCES) \
+	$(DRIVER_SOURCES)
+
+ASM_SOURCES = 
+
+DRIVER_DEFINES = $(shell pkg-config libdrm_nouveau --cflags)
+DRI_LIB_DEPS += $(shell pkg-config libdrm_nouveau --libs)
+
+include ../../Makefile.template
+
+symlinks:
diff --git a/src/gallium/winsys/drm/nouveau/dri/nouveau_context_dri.c b/src/gallium/winsys/drm/nouveau/dri/nouveau_context_dri.c
new file mode 100644
index 00000000000..aacfe984d18
--- /dev/null
+++ b/src/gallium/winsys/drm/nouveau/dri/nouveau_context_dri.c
@@ -0,0 +1,124 @@
+#include <main/glheader.h>
+#include <glapi/glthread.h>
+#include <GL/internal/glcore.h>
+#include <utils.h>
+
+#include <state_tracker/st_public.h>
+#include <state_tracker/st_context.h>
+#include <pipe/p_defines.h>
+#include <pipe/p_context.h>
+#include <pipe/p_screen.h>
+
+#include "../common/nouveau_winsys_pipe.h"
+#include "../common/nouveau_dri.h"
+#include "../common/nouveau_local.h"
+#include "nouveau_context_dri.h"
+#include "nouveau_screen_dri.h"
+
+#ifdef DEBUG
+static const struct dri_debug_control debug_control[] = {
+	{ "bo", DEBUG_BO },
+	{ NULL, 0 }
+};
+int __nouveau_debug = 0;
+#endif
+
+GLboolean
+nouveau_context_create(const __GLcontextModes *glVis,
+		       __DRIcontextPrivate *driContextPriv,
+		       void *sharedContextPrivate)
+{
+	__DRIscreenPrivate *driScrnPriv = driContextPriv->driScreenPriv;
+	struct nouveau_screen_dri  *nv_screen = driScrnPriv->private;
+	struct nouveau_context_dri *nv = CALLOC_STRUCT(nouveau_context_dri);
+	struct st_context *st_share = NULL;
+	struct nouveau_context_dri *nv_share = NULL;
+	struct pipe_context *pipe;
+
+	if (sharedContextPrivate) {
+		st_share = ((struct nouveau_context_dri *)sharedContextPrivate)->st;
+		nv_share = st_share->pipe->priv;
+	}
+
+	if (nouveau_context_init(&nv_screen->base, driContextPriv->hHWContext,
+	                         (drmLock *)&driScrnPriv->pSAREA->lock,
+	                         &nv_share->base, &nv->base)) {
+		return GL_FALSE;
+	}
+
+	pipe = nv->base.nvc->pctx[nv->base.pctx_id];
+	driContextPriv->driverPrivate = (void *)nv;
+	//nv->nv_screen  = nv_screen;
+	nv->dri_screen = driScrnPriv;
+
+	driParseConfigFiles(&nv->dri_option_cache, &nv_screen->option_cache,
+			    nv->dri_screen->myNum, "nouveau");
+#ifdef DEBUG
+	__nouveau_debug = driParseDebugString(getenv("NOUVEAU_DEBUG"),
+					      debug_control);
+#endif
+
+	nv->st = st_create_context(pipe, glVis, st_share);
+	return GL_TRUE;
+}
+
+void
+nouveau_context_destroy(__DRIcontextPrivate *driContextPriv)
+{
+	struct nouveau_context_dri *nv = driContextPriv->driverPrivate;
+
+	assert(nv);
+
+	st_finish(nv->st);
+	st_destroy_context(nv->st);
+
+	nouveau_context_cleanup(&nv->base);
+
+	FREE(nv);
+}
+
+GLboolean
+nouveau_context_bind(__DRIcontextPrivate *driContextPriv,
+		     __DRIdrawablePrivate *driDrawPriv,
+		     __DRIdrawablePrivate *driReadPriv)
+{
+	struct nouveau_context_dri *nv;
+	struct nouveau_framebuffer *draw, *read;
+
+	if (!driContextPriv) {
+		st_make_current(NULL, NULL, NULL);
+		return GL_TRUE;
+	}
+
+	nv = driContextPriv->driverPrivate;
+	draw = driDrawPriv->driverPrivate;
+	read = driReadPriv->driverPrivate;
+
+	st_make_current(nv->st, draw->stfb, read->stfb);
+
+	if ((nv->dri_drawable != driDrawPriv) ||
+	    (nv->last_stamp != driDrawPriv->lastStamp)) {
+		nv->dri_drawable = driDrawPriv;
+		st_resize_framebuffer(draw->stfb, driDrawPriv->w,
+				      driDrawPriv->h);
+		nv->last_stamp = driDrawPriv->lastStamp;
+	}
+
+	if (driDrawPriv != driReadPriv) {
+		st_resize_framebuffer(read->stfb, driReadPriv->w,
+				      driReadPriv->h);
+	}
+
+	return GL_TRUE;
+}
+
+GLboolean
+nouveau_context_unbind(__DRIcontextPrivate *driContextPriv)
+{
+	struct nouveau_context_dri *nv = driContextPriv->driverPrivate;
+	(void)nv;
+
+	st_flush(nv->st, 0, NULL);
+	return GL_TRUE;
+}
+
diff --git a/src/gallium/winsys/drm/nouveau/dri/nouveau_context_dri.h b/src/gallium/winsys/drm/nouveau/dri/nouveau_context_dri.h
new file mode 100644
index 00000000000..64cf326411c
--- /dev/null
+++ b/src/gallium/winsys/drm/nouveau/dri/nouveau_context_dri.h
@@ -0,0 +1,47 @@
+#ifndef __NOUVEAU_CONTEXT_DRI_H__
+#define __NOUVEAU_CONTEXT_DRI_H__
+
+#include <dri_util.h>
+#include <xmlconfig.h>
+#include <nouveau/nouveau_winsys.h>
+#include "../common/nouveau_context.h"
+
+struct nouveau_framebuffer {
+	struct st_framebuffer *stfb;
+};
+
+struct nouveau_context_dri {
+	struct nouveau_context base;
+	struct st_context *st;
+
+	/* DRI stuff */
+	__DRIscreenPrivate    *dri_screen;
+	__DRIdrawablePrivate  *dri_drawable;
+	unsigned int           last_stamp;
+	driOptionCache         dri_option_cache;
+	drm_context_t          drm_context;
+	drmLock                drm_lock;
+};
+
+extern GLboolean nouveau_context_create(const __GLcontextModes *,
+					__DRIcontextPrivate *, void *);
+extern void nouveau_context_destroy(__DRIcontextPrivate *);
+extern GLboolean nouveau_context_bind(__DRIcontextPrivate *,
+				      __DRIdrawablePrivate *draw,
+				      __DRIdrawablePrivate *read);
+extern GLboolean nouveau_context_unbind(__DRIcontextPrivate *);
+
+#ifdef DEBUG
+extern int __nouveau_debug;
+
+#define DEBUG_BO (1 << 0)
+
+#define DBG(flag, ...) do {                   \
+	if (__nouveau_debug & (DEBUG_##flag)) \
+		NOUVEAU_ERR(__VA_ARGS__);     \
+} while(0)
+#else
+#define DBG(flag, ...)
+#endif
+
+#endif
diff --git a/src/gallium/winsys/drm/nouveau/dri/nouveau_screen_dri.c b/src/gallium/winsys/drm/nouveau/dri/nouveau_screen_dri.c
new file mode 100644
index 00000000000..964a9028aac
--- /dev/null
+++ b/src/gallium/winsys/drm/nouveau/dri/nouveau_screen_dri.c
@@ -0,0 +1,259 @@
+#include <utils.h>
+#include <vblank.h>
+#include <xmlpool.h>
+
+#include <pipe/p_context.h>
+#include <state_tracker/st_public.h>
+#include <state_tracker/st_cb_fbo.h>
+#include <nouveau_drm.h>
+#include "../common/nouveau_dri.h"
+#include "../common/nouveau_local.h"
+#include "nouveau_context_dri.h"
+#include "nouveau_screen_dri.h"
+#include "nouveau_swapbuffers.h"
+
+#if NOUVEAU_DRM_HEADER_PATCHLEVEL != 12
+#error nouveau_drm.h version does not match expected version
+#endif
+
+/* Extension stuff, enabling of extensions handled by Gallium's GL state
+ * tracker.  But, we still need to define the entry points we want.
+ */
+#define need_GL_ARB_fragment_program
+#define need_GL_ARB_multisample
+#define need_GL_ARB_occlusion_query
+#define need_GL_ARB_point_parameters
+#define need_GL_ARB_shader_objects
+#define need_GL_ARB_texture_compression
+#define need_GL_ARB_vertex_program
+#define need_GL_ARB_vertex_shader
+#define need_GL_ARB_vertex_buffer_object
+#define need_GL_EXT_compiled_vertex_array
+#define need_GL_EXT_fog_coord
+#define need_GL_EXT_secondary_color
+#define need_GL_EXT_framebuffer_object
+#define need_GL_VERSION_2_0
+#define need_GL_VERSION_2_1
+#include "extension_helper.h"
+
+const struct dri_extension card_extensions[] =
+{
+	{ "GL_ARB_multisample", GL_ARB_multisample_functions },
+	{ "GL_ARB_occlusion_query", GL_ARB_occlusion_query_functions },
+	{ "GL_ARB_point_parameters", GL_ARB_point_parameters_functions },
+	{ "GL_ARB_shader_objects", GL_ARB_shader_objects_functions },
+	{ "GL_ARB_shading_language_100", GL_VERSION_2_0_functions },
+	{ "GL_ARB_shading_language_120", GL_VERSION_2_1_functions },
+	{ "GL_ARB_texture_compression", GL_ARB_texture_compression_functions },
+	{ "GL_ARB_vertex_program", GL_ARB_vertex_program_functions },
+	{ "GL_ARB_vertex_shader", GL_ARB_vertex_shader_functions },
+	{ "GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions },
+	{ "GL_EXT_compiled_vertex_array", GL_EXT_compiled_vertex_array_functions },
+	{ "GL_EXT_fog_coord", GL_EXT_fog_coord_functions },
+	{ "GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions },
+	{ "GL_EXT_secondary_color", GL_EXT_secondary_color_functions },
+	{ NULL, 0 }
+};
+
+PUBLIC const char __driConfigOptions[] =
+DRI_CONF_BEGIN
+DRI_CONF_END;
+static const GLuint __driNConfigOptions = 0;
+
+extern const struct dri_extension common_extensions[];
+extern const struct dri_extension nv40_extensions[];
+
+static GLboolean
+nouveau_create_buffer(__DRIscreenPrivate * driScrnPriv,
+		      __DRIdrawablePrivate * driDrawPriv,
+		      const __GLcontextModes *glVis, GLboolean pixmapBuffer)
+{
+	struct nouveau_framebuffer *nvfb;
+	enum pipe_format colour, depth, stencil;
+
+	if (pixmapBuffer)
+		return GL_FALSE;
+
+	nvfb = CALLOC_STRUCT(nouveau_framebuffer);
+	if (!nvfb)
+		return GL_FALSE;
+
+	if (glVis->redBits == 5)
+		colour = PIPE_FORMAT_R5G6B5_UNORM;
+	else
+		colour = PIPE_FORMAT_A8R8G8B8_UNORM;
+
+	if (glVis->depthBits == 16)
+		depth = PIPE_FORMAT_Z16_UNORM;
+	else if (glVis->depthBits == 24)
+		depth = PIPE_FORMAT_Z24S8_UNORM;
+	else
+		depth = PIPE_FORMAT_NONE;
+
+	if (glVis->stencilBits == 8)
+		stencil = PIPE_FORMAT_Z24S8_UNORM;
+	else
+		stencil = PIPE_FORMAT_NONE;
+
+	nvfb->stfb = st_create_framebuffer(glVis, colour, depth, stencil,
+					   driDrawPriv->w, driDrawPriv->h,
+					   (void*)nvfb);
+	if (!nvfb->stfb) {
+		free(nvfb);
+		return  GL_FALSE;
+	}
+
+	driDrawPriv->driverPrivate = (void *)nvfb;
+	return GL_TRUE;
+}
+
+static void
+nouveau_destroy_buffer(__DRIdrawablePrivate * driDrawPriv)
+{
+	struct nouveau_framebuffer *nvfb;
+	
+	nvfb = (struct nouveau_framebuffer *)driDrawPriv->driverPrivate;
+	st_unreference_framebuffer(nvfb->stfb);
+	free(nvfb);
+}
+
+static __DRIconfig **
+nouveau_fill_in_modes(__DRIscreenPrivate *psp,
+		      unsigned pixel_bits, unsigned depth_bits,
+		      unsigned stencil_bits, GLboolean have_back_buffer)
+{
+	__DRIconfig **configs;
+	unsigned depth_buffer_factor;
+	unsigned back_buffer_factor;
+	GLenum fb_format;
+	GLenum fb_type;
+
+	static const GLenum back_buffer_modes[] = {
+		GLX_NONE, GLX_SWAP_UNDEFINED_OML,
+	};
+
+	uint8_t depth_bits_array[3];
+	uint8_t stencil_bits_array[3];
+	uint8_t msaa_samples_array[1];
+
+	depth_bits_array[0] = 0;
+	depth_bits_array[1] = depth_bits;
+	depth_bits_array[2] = 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] = 0;
+	if (depth_bits == 24)
+		stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
+	stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
+
+	msaa_samples_array[0] = 0;
+
+	depth_buffer_factor =
+		((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
+	back_buffer_factor = (have_back_buffer) ? 3 : 1;
+
+	if (pixel_bits == 16) {
+		fb_format = GL_RGB;
+		fb_type = GL_UNSIGNED_SHORT_5_6_5;
+	}
+	else {
+		fb_format = GL_BGRA;
+		fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
+	}
+
+	configs = driCreateConfigs(fb_format, fb_type,
+				   depth_bits_array, stencil_bits_array,
+				   depth_buffer_factor, back_buffer_modes,
+				   back_buffer_factor, msaa_samples_array, 1);
+	if (configs == NULL) {
+	 fprintf(stderr, "[%s:%u] Error creating FBConfig!\n",
+			 __func__, __LINE__);
+		return NULL;
+	}
+
+	return configs;
+}
+
+static const __DRIconfig **
+nouveau_screen_create(__DRIscreenPrivate *psp)
+{
+	struct nouveau_dri *nv_dri = psp->pDevPriv;
+	struct nouveau_screen_dri *nv_screen;
+	static const __DRIversion ddx_expected =
+		{ 0, 0, NOUVEAU_DRM_HEADER_PATCHLEVEL };
+	static const __DRIversion dri_expected = { 4, 0, 0 };
+	static const __DRIversion drm_expected =
+		{ 0, 0, NOUVEAU_DRM_HEADER_PATCHLEVEL };
+
+	if (!driCheckDriDdxDrmVersions2("nouveau",
+					&psp->dri_version, &dri_expected,
+					&psp->ddx_version, &ddx_expected,
+					&psp->drm_version, &drm_expected)) {
+		return NULL;
+	}
+
+	if (drm_expected.patch != psp->drm_version.patch) {
+		fprintf(stderr, "Incompatible DRM patch level.\n"
+				"Expected: %d\n" "Current : %d\n",
+			drm_expected.patch, psp->drm_version.patch);
+		return NULL;
+	}
+
+	driInitExtensions(NULL, card_extensions, GL_FALSE);
+
+	if (psp->devPrivSize != sizeof(struct nouveau_dri)) {
+		NOUVEAU_ERR("DRI struct mismatch between DDX/DRI\n");
+		return NULL;
+	}
+
+	nv_screen = CALLOC_STRUCT(nouveau_screen_dri);
+	if (!nv_screen)
+		return NULL;
+
+	driParseOptionInfo(&nv_screen->option_cache,
+			   __driConfigOptions, __driNConfigOptions);
+
+	if (nouveau_screen_init(nv_dri, psp->fd, &nv_screen->base)) {
+		FREE(nv_screen);
+		return NULL;
+	}
+
+	nv_screen->driScrnPriv = psp;
+	psp->private = (void *)nv_screen;
+
+	return (const __DRIconfig **)
+		nouveau_fill_in_modes(psp, nv_dri->bpp,
+				      (nv_dri->bpp == 16) ? 16 : 24,
+				      (nv_dri->bpp == 16) ? 0 : 8, 1);
+}
+
+static void
+nouveau_screen_destroy(__DRIscreenPrivate *driScrnPriv)
+{
+	struct nouveau_screen_dri *nv_screen = driScrnPriv->private;
+
+	driScrnPriv->private = NULL;
+	nouveau_screen_cleanup(&nv_screen->base);
+	FREE(nv_screen);
+}
+
+const struct __DriverAPIRec
+driDriverAPI = {
+	.InitScreen	= nouveau_screen_create,
+	.DestroyScreen	= nouveau_screen_destroy,
+	.CreateContext	= nouveau_context_create,
+	.DestroyContext	= nouveau_context_destroy,
+	.CreateBuffer	= nouveau_create_buffer,
+	.DestroyBuffer	= nouveau_destroy_buffer,
+	.SwapBuffers	= nouveau_swap_buffers,
+	.MakeCurrent	= nouveau_context_bind,
+	.UnbindContext	= nouveau_context_unbind,
+	.CopySubBuffer	= nouveau_copy_sub_buffer,
+
+	.InitScreen2	= NULL, /* one day, I promise! */
+};
+
diff --git a/src/gallium/winsys/drm/nouveau/dri/nouveau_screen_dri.h b/src/gallium/winsys/drm/nouveau/dri/nouveau_screen_dri.h
new file mode 100644
index 00000000000..1498087819c
--- /dev/null
+++ b/src/gallium/winsys/drm/nouveau/dri/nouveau_screen_dri.h
@@ -0,0 +1,13 @@
+#ifndef __NOUVEAU_SCREEN_DRI_H__
+#define __NOUVEAU_SCREEN_DRI_H__
+
+#include "../common/nouveau_screen.h"
+#include "xmlconfig.h"
+
+struct nouveau_screen_dri {
+	struct nouveau_screen base;
+	__DRIscreenPrivate *driScrnPriv;
+	driOptionCache      option_cache;
+};
+
+#endif
diff --git a/src/gallium/winsys/drm/nouveau/dri/nouveau_swapbuffers.c b/src/gallium/winsys/drm/nouveau/dri/nouveau_swapbuffers.c
new file mode 100644
index 00000000000..58cb6f7265c
--- /dev/null
+++ b/src/gallium/winsys/drm/nouveau/dri/nouveau_swapbuffers.c
@@ -0,0 +1,113 @@
+#include <main/glheader.h>
+#include <glapi/glthread.h>
+#include <GL/internal/glcore.h>
+
+#include <pipe/p_context.h>
+#include <state_tracker/st_public.h>
+#include <state_tracker/st_context.h>
+#include <state_tracker/st_cb_fbo.h>
+
+#include "../common/nouveau_local.h"
+#include "nouveau_context_dri.h"
+#include "nouveau_screen_dri.h"
+#include "nouveau_swapbuffers.h"
+
+void
+nouveau_copy_buffer(__DRIdrawablePrivate *dPriv, struct pipe_surface *surf,
+		    const drm_clip_rect_t *rect)
+{
+	struct nouveau_context_dri *nv = dPriv->driContextPriv->driverPrivate;
+	struct pipe_context *pipe = nv->base.nvc->pctx[nv->base.pctx_id];
+	drm_clip_rect_t *pbox;
+	int nbox, i;
+
+	LOCK_HARDWARE(&nv->base);
+	if (!dPriv->numClipRects) {
+		UNLOCK_HARDWARE(&nv->base);
+		return;
+	}
+	pbox = dPriv->pClipRects;
+	nbox = dPriv->numClipRects;
+
+	for (i = 0; i < nbox; i++, pbox++) {
+		int sx, sy, dx, dy, w, h;
+
+		sx = pbox->x1 - dPriv->x;
+		sy = pbox->y1 - dPriv->y;
+		dx = pbox->x1;
+		dy = pbox->y1;
+		w  = pbox->x2 - pbox->x1;
+		h  = pbox->y2 - pbox->y1;
+
+		pipe->surface_copy(pipe, FALSE, nv->base.frontbuffer,
+				   dx, dy, surf, sx, sy, w, h);
+	}
+
+	FIRE_RING(nv->base.nvc->channel);
+	UNLOCK_HARDWARE(&nv->base);
+
+	if (nv->last_stamp != dPriv->lastStamp) {
+		struct nouveau_framebuffer *nvfb = dPriv->driverPrivate;
+		st_resize_framebuffer(nvfb->stfb, dPriv->w, dPriv->h);
+		nv->last_stamp = dPriv->lastStamp;
+	}
+}
+
+void
+nouveau_copy_sub_buffer(__DRIdrawablePrivate *dPriv, int x, int y, int w, int h)
+{
+	struct nouveau_framebuffer *nvfb = dPriv->driverPrivate;
+	struct pipe_surface *surf;
+
+	st_get_framebuffer_surface(nvfb->stfb, ST_SURFACE_BACK_LEFT, &surf);
+	if (surf) {
+		drm_clip_rect_t rect;
+		rect.x1 = x;
+		rect.y1 = y;
+		rect.x2 = x + w;
+		rect.y2 = y + h;
+
+		st_notify_swapbuffers(nvfb->stfb);
+		nouveau_copy_buffer(dPriv, surf, &rect);
+	}
+}
+
+void
+nouveau_swap_buffers(__DRIdrawablePrivate *dPriv)
+{
+	struct nouveau_framebuffer *nvfb = dPriv->driverPrivate;
+	struct pipe_surface *surf;
+
+	st_get_framebuffer_surface(nvfb->stfb, ST_SURFACE_BACK_LEFT, &surf);
+	if (surf) {
+		st_notify_swapbuffers(nvfb->stfb);
+		nouveau_copy_buffer(dPriv, surf, NULL);
+	}
+}
+
+void
+nouveau_flush_frontbuffer(struct pipe_winsys *pws, struct pipe_surface *surf,
+			  void *context_private)
+{
+	struct nouveau_context_dri *nv = context_private;
+	__DRIdrawablePrivate *dPriv = nv->dri_drawable;
+
+	nouveau_copy_buffer(dPriv, surf, NULL);
+}
+
+void
+nouveau_contended_lock(struct nouveau_context *nv)
+{
+	struct nouveau_context_dri *nv_sub = (struct nouveau_context_dri*)nv;
+	__DRIdrawablePrivate *dPriv = nv_sub->dri_drawable;
+	__DRIscreenPrivate *sPriv = nv_sub->dri_screen;
+
+	/* If the window moved, may need to set a new cliprect now.
+	 *
+	 * NOTE: This releases and regains the hw lock, so all state
+	 * checking must be done *after* this call:
+	 */
+	if (dPriv)
+		DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
+}
+
diff --git a/src/gallium/winsys/drm/nouveau/dri/nouveau_swapbuffers.h b/src/gallium/winsys/drm/nouveau/dri/nouveau_swapbuffers.h
new file mode 100644
index 00000000000..825d3da6da5
--- /dev/null
+++ b/src/gallium/winsys/drm/nouveau/dri/nouveau_swapbuffers.h
@@ -0,0 +1,10 @@
+#ifndef __NOUVEAU_SWAPBUFFERS_H__
+#define __NOUVEAU_SWAPBUFFERS_H__
+
+extern void nouveau_copy_buffer(__DRIdrawablePrivate *, struct pipe_surface *,
+				const drm_clip_rect_t *);
+extern void nouveau_copy_sub_buffer(__DRIdrawablePrivate *,
+				    int x, int y, int w, int h);
+extern void nouveau_swap_buffers(__DRIdrawablePrivate *);
+
+#endif