src/gallium/drivers/galahad/glhd_screen.c - platform/external/mesa3d - Git at Google

 /**************************************************************************
  *
  * Copyright 2009 VMware, Inc.
  * 2010 Corbin Simpson <MostAwesomeDude@gmail.com>
  * All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the
  * "Software"), to deal in the Software without restriction, including
  * without limitation the rights to use, copy, modify, merge, publish,
  * distribute, sub license, and/or sell copies of the Software, and to
  * permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
  *
  * The above copyright notice and this permission notice (including the
  * next paragraph) shall be included in all copies or substantial portions
  * of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  *
  **************************************************************************/


 #include "pipe/p_screen.h"
 #include "pipe/p_state.h"
 #include "util/u_memory.h"
 #include "util/u_math.h"
 #include "util/u_format.h"

 #include "glhd_public.h"
 #include "glhd_screen.h"
 #include "glhd_context.h"
 #include "glhd_objects.h"

 DEBUG_GET_ONCE_BOOL_OPTION(galahad, "GALLIUM_GALAHAD", FALSE)

 static void
 galahad_screen_destroy(struct pipe_screen *_screen)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct pipe_screen *screen = glhd_screen->screen;

    screen->destroy(screen);

    FREE(glhd_screen);
 }

 static const char *
 galahad_screen_get_name(struct pipe_screen *_screen)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct pipe_screen *screen = glhd_screen->screen;

    return screen->get_name(screen);
 }

 static const char *
 galahad_screen_get_vendor(struct pipe_screen *_screen)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct pipe_screen *screen = glhd_screen->screen;

    return screen->get_vendor(screen);
 }

 static int
 galahad_screen_get_param(struct pipe_screen *_screen,
                           enum pipe_cap param)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct pipe_screen *screen = glhd_screen->screen;

    return screen->get_param(screen,
                             param);
 }

 static int
 galahad_screen_get_shader_param(struct pipe_screen *_screen,
                           unsigned shader, enum pipe_shader_cap param)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct pipe_screen *screen = glhd_screen->screen;

    return screen->get_shader_param(screen, shader,
                             param);
 }

 static float
 galahad_screen_get_paramf(struct pipe_screen *_screen,
                            enum pipe_capf param)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct pipe_screen *screen = glhd_screen->screen;

    return screen->get_paramf(screen,
                              param);
 }

 static boolean
 galahad_screen_is_format_supported(struct pipe_screen *_screen,
                                     enum pipe_format format,
                                     enum pipe_texture_target target,
                                     unsigned sample_count,
                                     unsigned tex_usage)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct pipe_screen *screen = glhd_screen->screen;

    if (target >= PIPE_MAX_TEXTURE_TYPES) {
       glhd_warn("Received bogus texture target %d", target);
    }

    return screen->is_format_supported(screen,
                                       format,
                                       target,
                                       sample_count,
                                       tex_usage);
 }

 static struct pipe_context *
 galahad_screen_context_create(struct pipe_screen *_screen,
                                void *priv)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct pipe_screen *screen = glhd_screen->screen;
    struct pipe_context *result;

    result = screen->context_create(screen, priv);
    if (result)
       return galahad_context_create(_screen, result);
    return NULL;
 }

 static struct pipe_resource *
 galahad_screen_resource_create(struct pipe_screen *_screen,
                                 const struct pipe_resource *templat)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct pipe_screen *screen = glhd_screen->screen;
    struct pipe_resource *result;

    glhd_check("%u", templat->width0, >= 1);
    glhd_check("%u", templat->height0, >= 1);
    glhd_check("%u", templat->depth0, >= 1);
    glhd_check("%u", templat->array_size, >= 1);

    if (templat->target == PIPE_BUFFER) {
       glhd_check("%u", templat->last_level, == 0);
       glhd_check("%u", templat->height0, == 1);
       glhd_check("%u", templat->depth0,  == 1);
       glhd_check("%u", templat->array_size, == 1);
    } else if (templat->target == PIPE_TEXTURE_1D) {
       unsigned max_texture_2d_levels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
       glhd_check("%u", templat->last_level, < max_texture_2d_levels);
       glhd_check("%u", templat->width0,  <= (1 << (max_texture_2d_levels - 1)));
       glhd_check("%u", templat->height0, == 1);
       glhd_check("%u", templat->depth0,  == 1);
       glhd_check("%u", templat->array_size, == 1);
    } else if (templat->target == PIPE_TEXTURE_2D) {
       unsigned max_texture_2d_levels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
       glhd_check("%u", templat->last_level, < max_texture_2d_levels);
       glhd_check("%u", templat->width0,  <= (1 << (max_texture_2d_levels - 1)));
       glhd_check("%u", templat->height0, <= (1 << (max_texture_2d_levels - 1)));
       glhd_check("%u", templat->depth0,  == 1);
       glhd_check("%u", templat->array_size, == 1);
    } else if (templat->target == PIPE_TEXTURE_CUBE) {
       unsigned max_texture_cube_levels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS);
       glhd_check("%u", templat->last_level, < max_texture_cube_levels);
       glhd_check("%u", templat->width0,  <= (1 << (max_texture_cube_levels - 1)));
       glhd_check("%u", templat->height0, == templat->width0);
       glhd_check("%u", templat->depth0,  == 1);
       glhd_check("%u", templat->array_size, == 6);
    } else if (templat->target == PIPE_TEXTURE_RECT) {
       unsigned max_texture_2d_levels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
       glhd_check("%u", templat->last_level, == 0);
       glhd_check("%u", templat->width0,  <= (1 << (max_texture_2d_levels - 1)));
       glhd_check("%u", templat->height0, <= (1 << (max_texture_2d_levels - 1)));
       glhd_check("%u", templat->depth0,  == 1);
       glhd_check("%u", templat->array_size, == 1);
    } else if (templat->target == PIPE_TEXTURE_3D) {
       unsigned max_texture_3d_levels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS);
       glhd_check("%u", templat->last_level, < max_texture_3d_levels);
       glhd_check("%u", templat->width0,  <= (1 << (max_texture_3d_levels - 1)));
       glhd_check("%u", templat->height0, <= (1 << (max_texture_3d_levels - 1)));
       glhd_check("%u", templat->depth0,  <= (1 << (max_texture_3d_levels - 1)));
       glhd_check("%u", templat->array_size, == 1);
    } else if (templat->target == PIPE_TEXTURE_1D_ARRAY) {
       unsigned max_texture_2d_levels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
       glhd_check("%u", templat->last_level, < max_texture_2d_levels);
       glhd_check("%u", templat->width0,  <= (1 << (max_texture_2d_levels - 1)));
       glhd_check("%u", templat->height0, == 1);
       glhd_check("%u", templat->depth0,  == 1);
       glhd_check("%u", templat->array_size, <= screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS));
    } else if (templat->target == PIPE_TEXTURE_2D_ARRAY) {
       unsigned max_texture_2d_levels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
       glhd_check("%u", templat->last_level, < max_texture_2d_levels);
       glhd_check("%u", templat->width0,  <= (1 << (max_texture_2d_levels - 1)));
       glhd_check("%u", templat->height0, <= (1 << (max_texture_2d_levels - 1)));
       glhd_check("%u", templat->depth0,  == 1);
       glhd_check("%u", templat->array_size, <= screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS));
    } else {
       glhd_warn("Received bogus resource target %d", templat->target);
    }

    if(templat->target != PIPE_TEXTURE_RECT && templat->target != PIPE_BUFFER && !screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES))
    {
       if(!util_is_power_of_two(templat->width0) || !util_is_power_of_two(templat->height0))
          glhd_warn("Requested NPOT (%ux%u) non-rectangle texture without NPOT support", templat->width0, templat->height0);
    }

    if (templat->target != PIPE_BUFFER &&
        !screen->is_format_supported(screen, templat->format, templat->target, templat->nr_samples, templat->bind)) {
       glhd_warn("Requested format=%s target=%u samples=%u bind=0x%x unsupported",
          util_format_name(templat->format), templat->target, templat->nr_samples, templat->bind);
    }

    result = screen->resource_create(screen,
                                     templat);

    if (result)
       return galahad_resource_create(glhd_screen, result);
    return NULL;
 }

 static struct pipe_resource *
 galahad_screen_resource_from_handle(struct pipe_screen *_screen,
                                      const struct pipe_resource *templ,
                                      struct winsys_handle *handle)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct pipe_screen *screen = glhd_screen->screen;
    struct pipe_resource *result;

    /* TODO trace call */

    result = screen->resource_from_handle(screen, templ, handle);

    result = galahad_resource_create(galahad_screen(_screen), result);

    return result;
 }

 static boolean
 galahad_screen_resource_get_handle(struct pipe_screen *_screen,
                                     struct pipe_resource *_resource,
                                     struct winsys_handle *handle)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct galahad_resource *glhd_resource = galahad_resource(_resource);
    struct pipe_screen *screen = glhd_screen->screen;
    struct pipe_resource *resource = glhd_resource->resource;

    /* TODO trace call */

    return screen->resource_get_handle(screen, resource, handle);
 }


 static void
 galahad_screen_resource_destroy(struct pipe_screen *screen,
                                  struct pipe_resource *_resource)
 {
    galahad_resource_destroy(galahad_resource(_resource));
 }


 static void
 galahad_screen_flush_frontbuffer(struct pipe_screen *_screen,
                                   struct pipe_resource *_resource,
                                   unsigned level, unsigned layer,
                                   void *context_private)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct galahad_resource *glhd_resource = galahad_resource(_resource);
    struct pipe_screen *screen = glhd_screen->screen;
    struct pipe_resource *resource = glhd_resource->resource;

    screen->flush_frontbuffer(screen,
                              resource,
                              level, layer,
                              context_private);
 }

 static void
 galahad_screen_fence_reference(struct pipe_screen *_screen,
                                 struct pipe_fence_handle **ptr,
                                 struct pipe_fence_handle *fence)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct pipe_screen *screen = glhd_screen->screen;

    screen->fence_reference(screen,
                            ptr,
                            fence);
 }

 static boolean
 galahad_screen_fence_signalled(struct pipe_screen *_screen,
                                 struct pipe_fence_handle *fence)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct pipe_screen *screen = glhd_screen->screen;

    return screen->fence_signalled(screen,
                                   fence);
 }

 static boolean
 galahad_screen_fence_finish(struct pipe_screen *_screen,
                              struct pipe_fence_handle *fence,
                              uint64_t timeout)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct pipe_screen *screen = glhd_screen->screen;

    return screen->fence_finish(screen,
                                fence,
                                timeout);
 }

 static uint64_t
 galahad_screen_get_timestamp(struct pipe_screen *_screen)
 {
    struct galahad_screen *glhd_screen = galahad_screen(_screen);
    struct pipe_screen *screen = glhd_screen->screen;

    return screen->get_timestamp(screen);
 }

 struct pipe_screen *
 galahad_screen_create(struct pipe_screen *screen)
 {
    struct galahad_screen *glhd_screen;

    if (!debug_get_option_galahad())
       return screen;

    glhd_screen = CALLOC_STRUCT(galahad_screen);
    if (!glhd_screen) {
       return screen;
    }

 #define GLHD_SCREEN_INIT(_member) \
    glhd_screen->base . _member = screen -> _member ? galahad_screen_ ## _member : NULL

    GLHD_SCREEN_INIT(destroy);
    GLHD_SCREEN_INIT(get_name);
    GLHD_SCREEN_INIT(get_vendor);
    GLHD_SCREEN_INIT(get_param);
    GLHD_SCREEN_INIT(get_shader_param);
    //GLHD_SCREEN_INIT(get_video_param);
    //GLHD_SCREEN_INIT(get_compute_param);
    GLHD_SCREEN_INIT(get_paramf);
    GLHD_SCREEN_INIT(is_format_supported);
    //GLHD_SCREEN_INIT(is_video_format_supported);
    GLHD_SCREEN_INIT(context_create);
    GLHD_SCREEN_INIT(resource_create);
    GLHD_SCREEN_INIT(resource_from_handle);
    GLHD_SCREEN_INIT(resource_get_handle);
    GLHD_SCREEN_INIT(resource_destroy);
    GLHD_SCREEN_INIT(flush_frontbuffer);
    GLHD_SCREEN_INIT(fence_reference);
    GLHD_SCREEN_INIT(fence_signalled);
    GLHD_SCREEN_INIT(fence_finish);
    GLHD_SCREEN_INIT(get_timestamp);

 #undef GLHD_SCREEN_INIT

    glhd_screen->screen = screen;

    return &glhd_screen->base;
 }
	/**************************************************************************
	*
	* Copyright 2009 VMware, Inc.
	* 2010 Corbin Simpson <MostAwesomeDude@gmail.com>
	* All Rights Reserved.
	*
	* Permission is hereby granted, free of charge, to any person obtaining a
	* copy of this software and associated documentation files (the
	* "Software"), to deal in the Software without restriction, including
	* without limitation the rights to use, copy, modify, merge, publish,
	* distribute, sub license, and/or sell copies of the Software, and to
	* permit persons to whom the Software is furnished to do so, subject to
	* the following conditions:
	*
	* The above copyright notice and this permission notice (including the
	* next paragraph) shall be included in all copies or substantial portions
	* of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
	* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
	* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
	* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
	* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
	* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	*
	**************************************************************************/


	#include "pipe/p_screen.h"
	#include "pipe/p_state.h"
	#include "util/u_memory.h"
	#include "util/u_math.h"
	#include "util/u_format.h"

	#include "glhd_public.h"
	#include "glhd_screen.h"
	#include "glhd_context.h"
	#include "glhd_objects.h"

	DEBUG_GET_ONCE_BOOL_OPTION(galahad, "GALLIUM_GALAHAD", FALSE)

	static void
	galahad_screen_destroy(struct pipe_screen *_screen)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct pipe_screen *screen = glhd_screen->screen;

	screen->destroy(screen);

	FREE(glhd_screen);
	}

	static const char *
	galahad_screen_get_name(struct pipe_screen *_screen)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct pipe_screen *screen = glhd_screen->screen;

	return screen->get_name(screen);
	}

	static const char *
	galahad_screen_get_vendor(struct pipe_screen *_screen)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct pipe_screen *screen = glhd_screen->screen;

	return screen->get_vendor(screen);
	}

	static int
	galahad_screen_get_param(struct pipe_screen *_screen,
	enum pipe_cap param)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct pipe_screen *screen = glhd_screen->screen;

	return screen->get_param(screen,
	param);
	}

	static int
	galahad_screen_get_shader_param(struct pipe_screen *_screen,
	unsigned shader, enum pipe_shader_cap param)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct pipe_screen *screen = glhd_screen->screen;

	return screen->get_shader_param(screen, shader,
	param);
	}

	static float
	galahad_screen_get_paramf(struct pipe_screen *_screen,
	enum pipe_capf param)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct pipe_screen *screen = glhd_screen->screen;

	return screen->get_paramf(screen,
	param);
	}

	static boolean
	galahad_screen_is_format_supported(struct pipe_screen *_screen,
	enum pipe_format format,
	enum pipe_texture_target target,
	unsigned sample_count,
	unsigned tex_usage)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct pipe_screen *screen = glhd_screen->screen;

	if (target >= PIPE_MAX_TEXTURE_TYPES) {
	glhd_warn("Received bogus texture target %d", target);
	}

	return screen->is_format_supported(screen,
	format,
	target,
	sample_count,
	tex_usage);
	}

	static struct pipe_context *
	galahad_screen_context_create(struct pipe_screen *_screen,
	void *priv)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct pipe_screen *screen = glhd_screen->screen;
	struct pipe_context *result;

	result = screen->context_create(screen, priv);
	if (result)
	return galahad_context_create(_screen, result);
	return NULL;
	}

	static struct pipe_resource *
	galahad_screen_resource_create(struct pipe_screen *_screen,
	const struct pipe_resource *templat)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct pipe_screen *screen = glhd_screen->screen;
	struct pipe_resource *result;

	glhd_check("%u", templat->width0, >= 1);
	glhd_check("%u", templat->height0, >= 1);
	glhd_check("%u", templat->depth0, >= 1);
	glhd_check("%u", templat->array_size, >= 1);

	if (templat->target == PIPE_BUFFER) {
	glhd_check("%u", templat->last_level, == 0);
	glhd_check("%u", templat->height0, == 1);
	glhd_check("%u", templat->depth0, == 1);
	glhd_check("%u", templat->array_size, == 1);
	} else if (templat->target == PIPE_TEXTURE_1D) {
	unsigned max_texture_2d_levels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
	glhd_check("%u", templat->last_level, < max_texture_2d_levels);
	glhd_check("%u", templat->width0, <= (1 << (max_texture_2d_levels - 1)));
	glhd_check("%u", templat->height0, == 1);
	glhd_check("%u", templat->depth0, == 1);
	glhd_check("%u", templat->array_size, == 1);
	} else if (templat->target == PIPE_TEXTURE_2D) {
	unsigned max_texture_2d_levels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
	glhd_check("%u", templat->last_level, < max_texture_2d_levels);
	glhd_check("%u", templat->width0, <= (1 << (max_texture_2d_levels - 1)));
	glhd_check("%u", templat->height0, <= (1 << (max_texture_2d_levels - 1)));
	glhd_check("%u", templat->depth0, == 1);
	glhd_check("%u", templat->array_size, == 1);
	} else if (templat->target == PIPE_TEXTURE_CUBE) {
	unsigned max_texture_cube_levels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS);
	glhd_check("%u", templat->last_level, < max_texture_cube_levels);
	glhd_check("%u", templat->width0, <= (1 << (max_texture_cube_levels - 1)));
	glhd_check("%u", templat->height0, == templat->width0);
	glhd_check("%u", templat->depth0, == 1);
	glhd_check("%u", templat->array_size, == 6);
	} else if (templat->target == PIPE_TEXTURE_RECT) {
	unsigned max_texture_2d_levels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
	glhd_check("%u", templat->last_level, == 0);
	glhd_check("%u", templat->width0, <= (1 << (max_texture_2d_levels - 1)));
	glhd_check("%u", templat->height0, <= (1 << (max_texture_2d_levels - 1)));
	glhd_check("%u", templat->depth0, == 1);
	glhd_check("%u", templat->array_size, == 1);
	} else if (templat->target == PIPE_TEXTURE_3D) {
	unsigned max_texture_3d_levels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS);
	glhd_check("%u", templat->last_level, < max_texture_3d_levels);
	glhd_check("%u", templat->width0, <= (1 << (max_texture_3d_levels - 1)));
	glhd_check("%u", templat->height0, <= (1 << (max_texture_3d_levels - 1)));
	glhd_check("%u", templat->depth0, <= (1 << (max_texture_3d_levels - 1)));
	glhd_check("%u", templat->array_size, == 1);
	} else if (templat->target == PIPE_TEXTURE_1D_ARRAY) {
	unsigned max_texture_2d_levels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
	glhd_check("%u", templat->last_level, < max_texture_2d_levels);
	glhd_check("%u", templat->width0, <= (1 << (max_texture_2d_levels - 1)));
	glhd_check("%u", templat->height0, == 1);
	glhd_check("%u", templat->depth0, == 1);
	glhd_check("%u", templat->array_size, <= screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS));
	} else if (templat->target == PIPE_TEXTURE_2D_ARRAY) {
	unsigned max_texture_2d_levels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
	glhd_check("%u", templat->last_level, < max_texture_2d_levels);
	glhd_check("%u", templat->width0, <= (1 << (max_texture_2d_levels - 1)));
	glhd_check("%u", templat->height0, <= (1 << (max_texture_2d_levels - 1)));
	glhd_check("%u", templat->depth0, == 1);
	glhd_check("%u", templat->array_size, <= screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS));
	} else {
	glhd_warn("Received bogus resource target %d", templat->target);
	}

	if(templat->target != PIPE_TEXTURE_RECT && templat->target != PIPE_BUFFER && !screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES))
	{
	if(!util_is_power_of_two(templat->width0) \|\| !util_is_power_of_two(templat->height0))
	glhd_warn("Requested NPOT (%ux%u) non-rectangle texture without NPOT support", templat->width0, templat->height0);
	}

	if (templat->target != PIPE_BUFFER &&
	!screen->is_format_supported(screen, templat->format, templat->target, templat->nr_samples, templat->bind)) {
	glhd_warn("Requested format=%s target=%u samples=%u bind=0x%x unsupported",
	util_format_name(templat->format), templat->target, templat->nr_samples, templat->bind);
	}

	result = screen->resource_create(screen,
	templat);

	if (result)
	return galahad_resource_create(glhd_screen, result);
	return NULL;
	}

	static struct pipe_resource *
	galahad_screen_resource_from_handle(struct pipe_screen *_screen,
	const struct pipe_resource *templ,
	struct winsys_handle *handle)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct pipe_screen *screen = glhd_screen->screen;
	struct pipe_resource *result;

	/* TODO trace call */

	result = screen->resource_from_handle(screen, templ, handle);

	result = galahad_resource_create(galahad_screen(_screen), result);

	return result;
	}

	static boolean
	galahad_screen_resource_get_handle(struct pipe_screen *_screen,
	struct pipe_resource *_resource,
	struct winsys_handle *handle)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct galahad_resource *glhd_resource = galahad_resource(_resource);
	struct pipe_screen *screen = glhd_screen->screen;
	struct pipe_resource *resource = glhd_resource->resource;

	/* TODO trace call */

	return screen->resource_get_handle(screen, resource, handle);
	}



	static void
	galahad_screen_resource_destroy(struct pipe_screen *screen,
	struct pipe_resource *_resource)
	{
	galahad_resource_destroy(galahad_resource(_resource));
	}


	static void
	galahad_screen_flush_frontbuffer(struct pipe_screen *_screen,
	struct pipe_resource *_resource,
	unsigned level, unsigned layer,
	void *context_private)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct galahad_resource *glhd_resource = galahad_resource(_resource);
	struct pipe_screen *screen = glhd_screen->screen;
	struct pipe_resource *resource = glhd_resource->resource;

	screen->flush_frontbuffer(screen,
	resource,
	level, layer,
	context_private);
	}

	static void
	galahad_screen_fence_reference(struct pipe_screen *_screen,
	struct pipe_fence_handle **ptr,
	struct pipe_fence_handle *fence)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct pipe_screen *screen = glhd_screen->screen;

	screen->fence_reference(screen,
	ptr,
	fence);
	}

	static boolean
	galahad_screen_fence_signalled(struct pipe_screen *_screen,
	struct pipe_fence_handle *fence)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct pipe_screen *screen = glhd_screen->screen;

	return screen->fence_signalled(screen,
	fence);
	}

	static boolean
	galahad_screen_fence_finish(struct pipe_screen *_screen,
	struct pipe_fence_handle *fence,
	uint64_t timeout)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct pipe_screen *screen = glhd_screen->screen;

	return screen->fence_finish(screen,
	fence,
	timeout);
	}

	static uint64_t
	galahad_screen_get_timestamp(struct pipe_screen *_screen)
	{
	struct galahad_screen *glhd_screen = galahad_screen(_screen);
	struct pipe_screen *screen = glhd_screen->screen;

	return screen->get_timestamp(screen);
	}

	struct pipe_screen *
	galahad_screen_create(struct pipe_screen *screen)
	{
	struct galahad_screen *glhd_screen;

	if (!debug_get_option_galahad())
	return screen;

	glhd_screen = CALLOC_STRUCT(galahad_screen);
	if (!glhd_screen) {
	return screen;
	}

	#define GLHD_SCREEN_INIT(_member) \
	glhd_screen->base . _member = screen -> _member ? galahad_screen_ ## _member : NULL

	GLHD_SCREEN_INIT(destroy);
	GLHD_SCREEN_INIT(get_name);
	GLHD_SCREEN_INIT(get_vendor);
	GLHD_SCREEN_INIT(get_param);
	GLHD_SCREEN_INIT(get_shader_param);
	//GLHD_SCREEN_INIT(get_video_param);
	//GLHD_SCREEN_INIT(get_compute_param);
	GLHD_SCREEN_INIT(get_paramf);
	GLHD_SCREEN_INIT(is_format_supported);
	//GLHD_SCREEN_INIT(is_video_format_supported);
	GLHD_SCREEN_INIT(context_create);
	GLHD_SCREEN_INIT(resource_create);
	GLHD_SCREEN_INIT(resource_from_handle);
	GLHD_SCREEN_INIT(resource_get_handle);
	GLHD_SCREEN_INIT(resource_destroy);
	GLHD_SCREEN_INIT(flush_frontbuffer);
	GLHD_SCREEN_INIT(fence_reference);
	GLHD_SCREEN_INIT(fence_signalled);
	GLHD_SCREEN_INIT(fence_finish);
	GLHD_SCREEN_INIT(get_timestamp);

	#undef GLHD_SCREEN_INIT

	glhd_screen->screen = screen;

	return &glhd_screen->base;
	}