src/gallium/drivers/llvmpipe/lp_screen.c - fp2-dev/platform/external/mesa3d - Gitiles

 /**************************************************************************
  *
  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
  * 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 TUNGSTEN GRAPHICS 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 "util/u_memory.h"
 #include "util/u_format.h"
 #include "pipe/p_defines.h"
 #include "pipe/p_screen.h"

 #include "lp_texture.h"
 #include "lp_buffer.h"
 #include "lp_winsys.h"
 #include "lp_jit.h"
 #include "lp_screen.h"
 #include "lp_debug.h"

 #ifdef DEBUG
 int LP_DEBUG = 0;

 static const struct debug_named_value lp_debug_flags[] = {
    { "pipe",   DEBUG_PIPE },
    { "tgsi",   DEBUG_TGSI },
    { "tex",    DEBUG_TEX },
    { "asm",    DEBUG_ASM },
    { "setup",  DEBUG_SETUP },
    { "rast",   DEBUG_RAST },
    { "query",  DEBUG_QUERY },
    { "screen", DEBUG_SCREEN },
    { "jit",    DEBUG_JIT },
    {NULL, 0}
 };
 #endif


 static const char *
 llvmpipe_get_vendor(struct pipe_screen *screen)
 {
    return "VMware, Inc.";
 }


 static const char *
 llvmpipe_get_name(struct pipe_screen *screen)
 {
    return "llvmpipe";
 }


 static int
 llvmpipe_get_param(struct pipe_screen *screen, int param)
 {
    switch (param) {
    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
       return PIPE_MAX_SAMPLERS;
    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
       return PIPE_MAX_VERTEX_SAMPLERS;
    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
    case PIPE_CAP_NPOT_TEXTURES:
       return 1;
    case PIPE_CAP_TWO_SIDED_STENCIL:
       return 1;
    case PIPE_CAP_GLSL:
       return 1;
    case PIPE_CAP_ANISOTROPIC_FILTER:
       return 0;
    case PIPE_CAP_POINT_SPRITE:
       return 1;
    case PIPE_CAP_MAX_RENDER_TARGETS:
       return PIPE_MAX_COLOR_BUFS;
    case PIPE_CAP_OCCLUSION_QUERY:
       return 1;
    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
       return 1;
    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
       return 1;
    case PIPE_CAP_TEXTURE_SHADOW_MAP:
       return 1;
    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
       return 13; /* max 4Kx4K */
    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
       return 9;  /* max 256x256x256 */
    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
       return 13; /* max 4Kx4K */
    case PIPE_CAP_TGSI_CONT_SUPPORTED:
       return 1;
    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
       return 1;
    default:
       return 0;
    }
 }


 static float
 llvmpipe_get_paramf(struct pipe_screen *screen, int param)
 {
    switch (param) {
    case PIPE_CAP_MAX_LINE_WIDTH:
       /* fall-through */
    case PIPE_CAP_MAX_LINE_WIDTH_AA:
       return 255.0; /* arbitrary */
    case PIPE_CAP_MAX_POINT_WIDTH:
       /* fall-through */
    case PIPE_CAP_MAX_POINT_WIDTH_AA:
       return 255.0; /* arbitrary */
    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
       return 16.0; /* not actually signficant at this time */
    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
       return 16.0; /* arbitrary */
    default:
       return 0;
    }
 }


 /**
  * Query format support for creating a texture, drawing surface, etc.
  * \param format  the format to test
  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
  */
 static boolean
 llvmpipe_is_format_supported( struct pipe_screen *_screen,
                               enum pipe_format format,
                               enum pipe_texture_target target,
                               unsigned tex_usage,
                               unsigned geom_flags )
 {
    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
    struct llvmpipe_winsys *winsys = screen->winsys;
    const struct util_format_description *format_desc;

    format_desc = util_format_description(format);
    if(!format_desc)
       return FALSE;

    assert(target == PIPE_TEXTURE_1D ||
           target == PIPE_TEXTURE_2D ||
           target == PIPE_TEXTURE_3D ||
           target == PIPE_TEXTURE_CUBE);

    switch(format) {
    case PIPE_FORMAT_DXT1_RGB:
    case PIPE_FORMAT_DXT1_RGBA:
    case PIPE_FORMAT_DXT3_RGBA:
    case PIPE_FORMAT_DXT5_RGBA:
       return FALSE;
    default:
       break;
    }

    if(tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET) {
       if(format_desc->block.width != 1 ||
          format_desc->block.height != 1)
          return FALSE;

       if(format_desc->layout != UTIL_FORMAT_LAYOUT_SCALAR &&
          format_desc->layout != UTIL_FORMAT_LAYOUT_ARITH &&
          format_desc->layout != UTIL_FORMAT_LAYOUT_ARRAY)
          return FALSE;

       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB)
          return FALSE;
    }

    if(tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET) {
       if(!winsys->is_displaytarget_format_supported(winsys, format))
          return FALSE;
    }

    if(tex_usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL) {
       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
          return FALSE;

       /* FIXME: Temporary restriction. See lp_state_fs.c. */
       if(format_desc->block.bits != 32)
          return FALSE;
    }

    /* FIXME: Temporary restrictions. See lp_bld_sample_soa.c */
    if(tex_usage & PIPE_TEXTURE_USAGE_SAMPLER) {
       if(format_desc->block.width != 1 ||
          format_desc->block.height != 1)
          return FALSE;

       if(format_desc->layout != UTIL_FORMAT_LAYOUT_SCALAR &&
          format_desc->layout != UTIL_FORMAT_LAYOUT_ARITH &&
          format_desc->layout != UTIL_FORMAT_LAYOUT_ARRAY)
          return FALSE;

       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB &&
          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
          return FALSE;
    }

    return TRUE;
 }


 static struct pipe_buffer *
 llvmpipe_surface_buffer_create(struct pipe_screen *screen,
                                unsigned width, unsigned height,
                                enum pipe_format format,
                                unsigned tex_usage,
                                unsigned usage,
                                unsigned *stride)
 {
    /* This function should never be used */
    assert(0);
    return NULL;
 }


 static void
 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
                            struct pipe_surface *surface,
                            void *context_private)
 {
    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
    struct llvmpipe_winsys *winsys = screen->winsys;
    struct llvmpipe_texture *texture = llvmpipe_texture(surface->texture);

    assert(texture->dt);
    if (texture->dt)
       winsys->displaytarget_display(winsys, texture->dt, context_private);
 }


 static void
 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 {
    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
    struct llvmpipe_winsys *winsys = screen->winsys;

    lp_jit_screen_cleanup(screen);

    if(winsys->destroy)
       winsys->destroy(winsys);

    FREE(screen);
 }


 /**
  * Create a new pipe_screen object
  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
  */
 struct pipe_screen *
 llvmpipe_create_screen(struct llvmpipe_winsys *winsys)
 {
    struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);

 #ifdef DEBUG
    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 #endif

    if (!screen)
       return NULL;

    screen->winsys = winsys;

    screen->base.destroy = llvmpipe_destroy_screen;

    screen->base.get_name = llvmpipe_get_name;
    screen->base.get_vendor = llvmpipe_get_vendor;
    screen->base.get_param = llvmpipe_get_param;
    screen->base.get_paramf = llvmpipe_get_paramf;
    screen->base.is_format_supported = llvmpipe_is_format_supported;

    screen->base.surface_buffer_create = llvmpipe_surface_buffer_create;
    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;

    llvmpipe_init_screen_texture_funcs(&screen->base);
    llvmpipe_init_screen_buffer_funcs(&screen->base);

    lp_jit_screen_init(screen);

    return &screen->base;
 }
	/**************************************************************************
	*
	* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
	* 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 TUNGSTEN GRAPHICS 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 "util/u_memory.h"
	#include "util/u_format.h"
	#include "pipe/p_defines.h"
	#include "pipe/p_screen.h"

	#include "lp_texture.h"
	#include "lp_buffer.h"
	#include "lp_winsys.h"
	#include "lp_jit.h"
	#include "lp_screen.h"
	#include "lp_debug.h"

	#ifdef DEBUG
	int LP_DEBUG = 0;

	static const struct debug_named_value lp_debug_flags[] = {
	{ "pipe", DEBUG_PIPE },
	{ "tgsi", DEBUG_TGSI },
	{ "tex", DEBUG_TEX },
	{ "asm", DEBUG_ASM },
	{ "setup", DEBUG_SETUP },
	{ "rast", DEBUG_RAST },
	{ "query", DEBUG_QUERY },
	{ "screen", DEBUG_SCREEN },
	{ "jit", DEBUG_JIT },
	{NULL, 0}
	};
	#endif


	static const char *
	llvmpipe_get_vendor(struct pipe_screen *screen)
	{
	return "VMware, Inc.";
	}


	static const char *
	llvmpipe_get_name(struct pipe_screen *screen)
	{
	return "llvmpipe";
	}


	static int
	llvmpipe_get_param(struct pipe_screen *screen, int param)
	{
	switch (param) {
	case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
	return PIPE_MAX_SAMPLERS;
	case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
	return PIPE_MAX_VERTEX_SAMPLERS;
	case PIPE_CAP_MAX_COMBINED_SAMPLERS:
	return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
	case PIPE_CAP_NPOT_TEXTURES:
	return 1;
	case PIPE_CAP_TWO_SIDED_STENCIL:
	return 1;
	case PIPE_CAP_GLSL:
	return 1;
	case PIPE_CAP_ANISOTROPIC_FILTER:
	return 0;
	case PIPE_CAP_POINT_SPRITE:
	return 1;
	case PIPE_CAP_MAX_RENDER_TARGETS:
	return PIPE_MAX_COLOR_BUFS;
	case PIPE_CAP_OCCLUSION_QUERY:
	return 1;
	case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
	return 1;
	case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
	return 1;
	case PIPE_CAP_TEXTURE_SHADOW_MAP:
	return 1;
	case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
	return 13; /* max 4Kx4K */
	case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
	return 9; /* max 256x256x256 */
	case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
	return 13; /* max 4Kx4K */
	case PIPE_CAP_TGSI_CONT_SUPPORTED:
	return 1;
	case PIPE_CAP_BLEND_EQUATION_SEPARATE:
	return 1;
	default:
	return 0;
	}
	}


	static float
	llvmpipe_get_paramf(struct pipe_screen *screen, int param)
	{
	switch (param) {
	case PIPE_CAP_MAX_LINE_WIDTH:
	/* fall-through */
	case PIPE_CAP_MAX_LINE_WIDTH_AA:
	return 255.0; /* arbitrary */
	case PIPE_CAP_MAX_POINT_WIDTH:
	/* fall-through */
	case PIPE_CAP_MAX_POINT_WIDTH_AA:
	return 255.0; /* arbitrary */
	case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
	return 16.0; /* not actually signficant at this time */
	case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
	return 16.0; /* arbitrary */
	default:
	return 0;
	}
	}


	/**
	* Query format support for creating a texture, drawing surface, etc.
	* \param format the format to test
	* \param type one of PIPE_TEXTURE, PIPE_SURFACE
	*/
	static boolean
	llvmpipe_is_format_supported( struct pipe_screen *_screen,
	enum pipe_format format,
	enum pipe_texture_target target,
	unsigned tex_usage,
	unsigned geom_flags )
	{
	struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
	struct llvmpipe_winsys *winsys = screen->winsys;
	const struct util_format_description *format_desc;

	format_desc = util_format_description(format);
	if(!format_desc)
	return FALSE;

	assert(target == PIPE_TEXTURE_1D \|\|
	target == PIPE_TEXTURE_2D \|\|
	target == PIPE_TEXTURE_3D \|\|
	target == PIPE_TEXTURE_CUBE);

	switch(format) {
	case PIPE_FORMAT_DXT1_RGB:
	case PIPE_FORMAT_DXT1_RGBA:
	case PIPE_FORMAT_DXT3_RGBA:
	case PIPE_FORMAT_DXT5_RGBA:
	return FALSE;
	default:
	break;
	}

	if(tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET) {
	if(format_desc->block.width != 1 \|\|
	format_desc->block.height != 1)
	return FALSE;

	if(format_desc->layout != UTIL_FORMAT_LAYOUT_SCALAR &&
	format_desc->layout != UTIL_FORMAT_LAYOUT_ARITH &&
	format_desc->layout != UTIL_FORMAT_LAYOUT_ARRAY)
	return FALSE;

	if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
	format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB)
	return FALSE;
	}

	if(tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET) {
	if(!winsys->is_displaytarget_format_supported(winsys, format))
	return FALSE;
	}

	if(tex_usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL) {
	if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
	return FALSE;

	/* FIXME: Temporary restriction. See lp_state_fs.c. */
	if(format_desc->block.bits != 32)
	return FALSE;
	}

	/* FIXME: Temporary restrictions. See lp_bld_sample_soa.c */
	if(tex_usage & PIPE_TEXTURE_USAGE_SAMPLER) {
	if(format_desc->block.width != 1 \|\|
	format_desc->block.height != 1)
	return FALSE;

	if(format_desc->layout != UTIL_FORMAT_LAYOUT_SCALAR &&
	format_desc->layout != UTIL_FORMAT_LAYOUT_ARITH &&
	format_desc->layout != UTIL_FORMAT_LAYOUT_ARRAY)
	return FALSE;

	if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
	format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB &&
	format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
	return FALSE;
	}

	return TRUE;
	}


	static struct pipe_buffer *
	llvmpipe_surface_buffer_create(struct pipe_screen *screen,
	unsigned width, unsigned height,
	enum pipe_format format,
	unsigned tex_usage,
	unsigned usage,
	unsigned *stride)
	{
	/* This function should never be used */
	assert(0);
	return NULL;
	}


	static void
	llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
	struct pipe_surface *surface,
	void *context_private)
	{
	struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
	struct llvmpipe_winsys *winsys = screen->winsys;
	struct llvmpipe_texture *texture = llvmpipe_texture(surface->texture);

	assert(texture->dt);
	if (texture->dt)
	winsys->displaytarget_display(winsys, texture->dt, context_private);
	}


	static void
	llvmpipe_destroy_screen( struct pipe_screen *_screen )
	{
	struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
	struct llvmpipe_winsys *winsys = screen->winsys;

	lp_jit_screen_cleanup(screen);

	if(winsys->destroy)
	winsys->destroy(winsys);

	FREE(screen);
	}



	/**
	* Create a new pipe_screen object
	* Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
	*/
	struct pipe_screen *
	llvmpipe_create_screen(struct llvmpipe_winsys *winsys)
	{
	struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);

	#ifdef DEBUG
	LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
	#endif

	if (!screen)
	return NULL;

	screen->winsys = winsys;

	screen->base.destroy = llvmpipe_destroy_screen;

	screen->base.get_name = llvmpipe_get_name;
	screen->base.get_vendor = llvmpipe_get_vendor;
	screen->base.get_param = llvmpipe_get_param;
	screen->base.get_paramf = llvmpipe_get_paramf;
	screen->base.is_format_supported = llvmpipe_is_format_supported;

	screen->base.surface_buffer_create = llvmpipe_surface_buffer_create;
	screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;

	llvmpipe_init_screen_texture_funcs(&screen->base);
	llvmpipe_init_screen_buffer_funcs(&screen->base);

	lp_jit_screen_init(screen);

	return &screen->base;
	}