src/mesa/state_tracker/st_atom_pixeltransfer.c - platform/external/mesa3d - Git at Google

 /**************************************************************************
  *
  * Copyright 2007 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.
  *
  **************************************************************************/

 /*
  * Generate fragment programs to implement pixel transfer ops, such as
  * scale/bias, colortable, convolution...
  *
  * Authors:
  *   Brian Paul
  */

 #include "main/imports.h"
 #include "main/image.h"
 #include "main/macros.h"
 #include "program/program.h"
 #include "program/prog_cache.h"
 #include "program/prog_instruction.h"
 #include "program/prog_parameter.h"
 #include "program/prog_print.h"

 #include "st_context.h"
 #include "st_format.h"
 #include "st_texture.h"

 #include "pipe/p_screen.h"
 #include "pipe/p_context.h"
 #include "util/u_inlines.h"
 #include "util/u_pack_color.h"


 struct state_key
 {
    GLuint scaleAndBias:1;
    GLuint pixelMaps:1;

 #if 0
    GLfloat Maps[3][256][4];
    int NumMaps;
    GLint NumStages;
    pipeline_stage Stages[STAGE_MAX];
    GLboolean StagesUsed[STAGE_MAX];
    GLfloat Scale1[4], Bias1[4];
    GLfloat Scale2[4], Bias2[4];
 #endif
 };

 static void
 make_state_key(struct gl_context *ctx,  struct state_key *key)
 {
    memset(key, 0, sizeof(*key));

    if (ctx->Pixel.RedBias != 0.0 || ctx->Pixel.RedScale != 1.0 ||
        ctx->Pixel.GreenBias != 0.0 || ctx->Pixel.GreenScale != 1.0 ||
        ctx->Pixel.BlueBias != 0.0 || ctx->Pixel.BlueScale != 1.0 ||
        ctx->Pixel.AlphaBias != 0.0 || ctx->Pixel.AlphaScale != 1.0) {
       key->scaleAndBias = 1;
    }

    key->pixelMaps = ctx->Pixel.MapColorFlag;
 }


 /**
  * Update the pixelmap texture with the contents of the R/G/B/A pixel maps.
  */
 static void
 load_color_map_texture(struct gl_context *ctx, struct pipe_resource *pt)
 {
    struct st_context *st = st_context(ctx);
    struct pipe_context *pipe = st->pipe;
    struct pipe_transfer *transfer;
    const GLuint rSize = ctx->PixelMaps.RtoR.Size;
    const GLuint gSize = ctx->PixelMaps.GtoG.Size;
    const GLuint bSize = ctx->PixelMaps.BtoB.Size;
    const GLuint aSize = ctx->PixelMaps.AtoA.Size;
    const uint texSize = pt->width0;
    uint *dest;
    uint i, j;

    transfer = pipe_get_transfer(pipe,
                                 pt, 0, 0, PIPE_TRANSFER_WRITE,
                                 0, 0, texSize, texSize);
    dest = (uint *) pipe_transfer_map(pipe, transfer);

    /* Pack four 1D maps into a 2D texture:
     * R map is placed horizontally, indexed by S, in channel 0
     * G map is placed vertically, indexed by T, in channel 1
     * B map is placed horizontally, indexed by S, in channel 2
     * A map is placed vertically, indexed by T, in channel 3
     */
    for (i = 0; i < texSize; i++) {
       for (j = 0; j < texSize; j++) {
          union util_color uc;
          int k = (i * texSize + j);
          float rgba[4];
          rgba[0] = ctx->PixelMaps.RtoR.Map[j * rSize / texSize];
          rgba[1] = ctx->PixelMaps.GtoG.Map[i * gSize / texSize];
          rgba[2] = ctx->PixelMaps.BtoB.Map[j * bSize / texSize];
          rgba[3] = ctx->PixelMaps.AtoA.Map[i * aSize / texSize];
          util_pack_color(rgba, pt->format, &uc);
          *(dest + k) = uc.ui;
       }
    }

    pipe_transfer_unmap(pipe, transfer);
    pipe->transfer_destroy(pipe, transfer);
 }


 #define MAX_INST 100

 /**
  * Returns a fragment program which implements the current pixel transfer ops.
  */
 static struct gl_fragment_program *
 get_pixel_transfer_program(struct gl_context *ctx, const struct state_key *key)
 {
    struct st_context *st = st_context(ctx);
    struct prog_instruction inst[MAX_INST];
    struct gl_program_parameter_list *params;
    struct gl_fragment_program *fp;
    GLuint ic = 0;
    const GLuint colorTemp = 0;

    fp = (struct gl_fragment_program *)
       ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
    if (!fp)
       return NULL;

    params = _mesa_new_parameter_list();

    /*
     * Get initial pixel color from the texture.
     * TEX colorTemp, fragment.texcoord[0], texture[0], 2D;
     */
    _mesa_init_instructions(inst + ic, 1);
    inst[ic].Opcode = OPCODE_TEX;
    inst[ic].DstReg.File = PROGRAM_TEMPORARY;
    inst[ic].DstReg.Index = colorTemp;
    inst[ic].SrcReg[0].File = PROGRAM_INPUT;
    inst[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0;
    inst[ic].TexSrcUnit = 0;
    inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;
    ic++;
    fp->Base.InputsRead = BITFIELD64_BIT(FRAG_ATTRIB_TEX0);
    fp->Base.OutputsWritten = BITFIELD64_BIT(FRAG_RESULT_COLOR);
    fp->Base.SamplersUsed = 0x1;  /* sampler 0 (bit 0) is used */

    if (key->scaleAndBias) {
       static const gl_state_index scale_state[STATE_LENGTH] =
          { STATE_INTERNAL, STATE_PT_SCALE, 0, 0, 0 };
       static const gl_state_index bias_state[STATE_LENGTH] =
          { STATE_INTERNAL, STATE_PT_BIAS, 0, 0, 0 };
       GLint scale_p, bias_p;

       scale_p = _mesa_add_state_reference(params, scale_state);
       bias_p = _mesa_add_state_reference(params, bias_state);

       /* MAD colorTemp, colorTemp, scale, bias; */
       _mesa_init_instructions(inst + ic, 1);
       inst[ic].Opcode = OPCODE_MAD;
       inst[ic].DstReg.File = PROGRAM_TEMPORARY;
       inst[ic].DstReg.Index = colorTemp;
       inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
       inst[ic].SrcReg[0].Index = colorTemp;
       inst[ic].SrcReg[1].File = PROGRAM_STATE_VAR;
       inst[ic].SrcReg[1].Index = scale_p;
       inst[ic].SrcReg[2].File = PROGRAM_STATE_VAR;
       inst[ic].SrcReg[2].Index = bias_p;
       ic++;
    }

    if (key->pixelMaps) {
       const GLuint temp = 1;

       /* create the colormap/texture now if not already done */
       if (!st->pixel_xfer.pixelmap_texture) {
          st->pixel_xfer.pixelmap_texture = st_create_color_map_texture(ctx);
          st->pixel_xfer.pixelmap_sampler_view =
             st_create_texture_sampler_view(st->pipe,
                                            st->pixel_xfer.pixelmap_texture);
       }

       /* with a little effort, we can do four pixel map look-ups with
        * two TEX instructions:
        */

       /* TEX temp.rg, colorTemp.rgba, texture[1], 2D; */
       _mesa_init_instructions(inst + ic, 1);
       inst[ic].Opcode = OPCODE_TEX;
       inst[ic].DstReg.File = PROGRAM_TEMPORARY;
       inst[ic].DstReg.Index = temp;
       inst[ic].DstReg.WriteMask = WRITEMASK_XY; /* write R,G */
       inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
       inst[ic].SrcReg[0].Index = colorTemp;
       inst[ic].TexSrcUnit = 1;
       inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;
       ic++;

       /* TEX temp.ba, colorTemp.baba, texture[1], 2D; */
       _mesa_init_instructions(inst + ic, 1);
       inst[ic].Opcode = OPCODE_TEX;
       inst[ic].DstReg.File = PROGRAM_TEMPORARY;
       inst[ic].DstReg.Index = temp;
       inst[ic].DstReg.WriteMask = WRITEMASK_ZW; /* write B,A */
       inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
       inst[ic].SrcReg[0].Index = colorTemp;
       inst[ic].SrcReg[0].Swizzle = MAKE_SWIZZLE4(SWIZZLE_Z, SWIZZLE_W,
                                                  SWIZZLE_Z, SWIZZLE_W);
       inst[ic].TexSrcUnit = 1;
       inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;
       ic++;

       /* MOV colorTemp, temp; */
       _mesa_init_instructions(inst + ic, 1);
       inst[ic].Opcode = OPCODE_MOV;
       inst[ic].DstReg.File = PROGRAM_TEMPORARY;
       inst[ic].DstReg.Index = colorTemp;
       inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
       inst[ic].SrcReg[0].Index = temp;
       ic++;

       fp->Base.SamplersUsed |= (1 << 1);  /* sampler 1 is used */
    }

    /* Modify last instruction's dst reg to write to result.color */
    {
       struct prog_instruction *last = &inst[ic - 1];
       last->DstReg.File = PROGRAM_OUTPUT;
       last->DstReg.Index = FRAG_RESULT_COLOR;
    }

    /* END; */
    _mesa_init_instructions(inst + ic, 1);
    inst[ic].Opcode = OPCODE_END;
    ic++;

    assert(ic <= MAX_INST);


    fp->Base.Instructions = _mesa_alloc_instructions(ic);
    if (!fp->Base.Instructions) {
       _mesa_error(ctx, GL_OUT_OF_MEMORY,
                   "generating pixel transfer program");
       _mesa_free_parameter_list(params);
       return NULL;
    }

    _mesa_copy_instructions(fp->Base.Instructions, inst, ic);
    fp->Base.NumInstructions = ic;
    fp->Base.Parameters = params;

 #if 0
    printf("========= pixel transfer prog\n");
    _mesa_print_program(&fp->Base);
    _mesa_print_parameter_list(fp->Base.Parameters);
 #endif

    return fp;
 }


 /**
  * Update st->pixel_xfer.program in response to new pixel-transfer state.
  */
 static void
 update_pixel_transfer(struct st_context *st)
 {
    struct gl_context *ctx = st->ctx;
    struct state_key key;
    struct gl_fragment_program *fp;

    make_state_key(st->ctx, &key);

    fp = (struct gl_fragment_program *)
       _mesa_search_program_cache(st->pixel_xfer.cache, &key, sizeof(key));
    if (!fp) {
       fp = get_pixel_transfer_program(st->ctx, &key);
       _mesa_program_cache_insert(st->ctx, st->pixel_xfer.cache,
                                  &key, sizeof(key), &fp->Base);
    }

    if (ctx->Pixel.MapColorFlag) {
       load_color_map_texture(ctx, st->pixel_xfer.pixelmap_texture);
    }
    st->pixel_xfer.pixelmap_enabled = ctx->Pixel.MapColorFlag;

    st->pixel_xfer.program = (struct st_fragment_program *) fp;
 }


 const struct st_tracked_state st_update_pixel_transfer = {
    "st_update_pixel_transfer",				/* name */
    {							/* dirty */
       _NEW_PIXEL,					/* mesa */
       0,						/* st */
    },
    update_pixel_transfer				/* update */
 };
	/**************************************************************************
	*
	* Copyright 2007 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.
	*
	**************************************************************************/

	/*
	* Generate fragment programs to implement pixel transfer ops, such as
	* scale/bias, colortable, convolution...
	*
	* Authors:
	* Brian Paul
	*/

	#include "main/imports.h"
	#include "main/image.h"
	#include "main/macros.h"
	#include "program/program.h"
	#include "program/prog_cache.h"
	#include "program/prog_instruction.h"
	#include "program/prog_parameter.h"
	#include "program/prog_print.h"

	#include "st_context.h"
	#include "st_format.h"
	#include "st_texture.h"

	#include "pipe/p_screen.h"
	#include "pipe/p_context.h"
	#include "util/u_inlines.h"
	#include "util/u_pack_color.h"


	struct state_key
	{
	GLuint scaleAndBias:1;
	GLuint pixelMaps:1;

	#if 0
	GLfloat Maps[3][256][4];
	int NumMaps;
	GLint NumStages;
	pipeline_stage Stages[STAGE_MAX];
	GLboolean StagesUsed[STAGE_MAX];
	GLfloat Scale1[4], Bias1[4];
	GLfloat Scale2[4], Bias2[4];
	#endif
	};

	static void
	make_state_key(struct gl_context ctx, struct state_key key)
	{
	memset(key, 0, sizeof(*key));

	if (ctx->Pixel.RedBias != 0.0 \|\| ctx->Pixel.RedScale != 1.0 \|\|
	ctx->Pixel.GreenBias != 0.0 \|\| ctx->Pixel.GreenScale != 1.0 \|\|
	ctx->Pixel.BlueBias != 0.0 \|\| ctx->Pixel.BlueScale != 1.0 \|\|
	ctx->Pixel.AlphaBias != 0.0 \|\| ctx->Pixel.AlphaScale != 1.0) {
	key->scaleAndBias = 1;
	}

	key->pixelMaps = ctx->Pixel.MapColorFlag;
	}


	/**
	* Update the pixelmap texture with the contents of the R/G/B/A pixel maps.
	*/
	static void
	load_color_map_texture(struct gl_context ctx, struct pipe_resource pt)
	{
	struct st_context *st = st_context(ctx);
	struct pipe_context *pipe = st->pipe;
	struct pipe_transfer *transfer;
	const GLuint rSize = ctx->PixelMaps.RtoR.Size;
	const GLuint gSize = ctx->PixelMaps.GtoG.Size;
	const GLuint bSize = ctx->PixelMaps.BtoB.Size;
	const GLuint aSize = ctx->PixelMaps.AtoA.Size;
	const uint texSize = pt->width0;
	uint *dest;
	uint i, j;

	transfer = pipe_get_transfer(pipe,
	pt, 0, 0, PIPE_TRANSFER_WRITE,
	0, 0, texSize, texSize);
	dest = (uint *) pipe_transfer_map(pipe, transfer);

	/* Pack four 1D maps into a 2D texture:
	* R map is placed horizontally, indexed by S, in channel 0
	* G map is placed vertically, indexed by T, in channel 1
	* B map is placed horizontally, indexed by S, in channel 2
	* A map is placed vertically, indexed by T, in channel 3
	*/
	for (i = 0; i < texSize; i++) {
	for (j = 0; j < texSize; j++) {
	union util_color uc;
	int k = (i * texSize + j);
	float rgba[4];
	rgba[0] = ctx->PixelMaps.RtoR.Map[j * rSize / texSize];
	rgba[1] = ctx->PixelMaps.GtoG.Map[i * gSize / texSize];
	rgba[2] = ctx->PixelMaps.BtoB.Map[j * bSize / texSize];
	rgba[3] = ctx->PixelMaps.AtoA.Map[i * aSize / texSize];
	util_pack_color(rgba, pt->format, &uc);
	*(dest + k) = uc.ui;
	}
	}

	pipe_transfer_unmap(pipe, transfer);
	pipe->transfer_destroy(pipe, transfer);
	}



	#define MAX_INST 100

	/**
	* Returns a fragment program which implements the current pixel transfer ops.
	*/
	static struct gl_fragment_program *
	get_pixel_transfer_program(struct gl_context ctx, const struct state_key key)
	{
	struct st_context *st = st_context(ctx);
	struct prog_instruction inst[MAX_INST];
	struct gl_program_parameter_list *params;
	struct gl_fragment_program *fp;
	GLuint ic = 0;
	const GLuint colorTemp = 0;

	fp = (struct gl_fragment_program *)
	ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
	if (!fp)
	return NULL;

	params = _mesa_new_parameter_list();

	/*
	* Get initial pixel color from the texture.
	* TEX colorTemp, fragment.texcoord[0], texture[0], 2D;
	*/
	_mesa_init_instructions(inst + ic, 1);
	inst[ic].Opcode = OPCODE_TEX;
	inst[ic].DstReg.File = PROGRAM_TEMPORARY;
	inst[ic].DstReg.Index = colorTemp;
	inst[ic].SrcReg[0].File = PROGRAM_INPUT;
	inst[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0;
	inst[ic].TexSrcUnit = 0;
	inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;
	ic++;
	fp->Base.InputsRead = BITFIELD64_BIT(FRAG_ATTRIB_TEX0);
	fp->Base.OutputsWritten = BITFIELD64_BIT(FRAG_RESULT_COLOR);
	fp->Base.SamplersUsed = 0x1; /* sampler 0 (bit 0) is used */

	if (key->scaleAndBias) {
	static const gl_state_index scale_state[STATE_LENGTH] =
	{ STATE_INTERNAL, STATE_PT_SCALE, 0, 0, 0 };
	static const gl_state_index bias_state[STATE_LENGTH] =
	{ STATE_INTERNAL, STATE_PT_BIAS, 0, 0, 0 };
	GLint scale_p, bias_p;

	scale_p = _mesa_add_state_reference(params, scale_state);
	bias_p = _mesa_add_state_reference(params, bias_state);

	/* MAD colorTemp, colorTemp, scale, bias; */
	_mesa_init_instructions(inst + ic, 1);
	inst[ic].Opcode = OPCODE_MAD;
	inst[ic].DstReg.File = PROGRAM_TEMPORARY;
	inst[ic].DstReg.Index = colorTemp;
	inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
	inst[ic].SrcReg[0].Index = colorTemp;
	inst[ic].SrcReg[1].File = PROGRAM_STATE_VAR;
	inst[ic].SrcReg[1].Index = scale_p;
	inst[ic].SrcReg[2].File = PROGRAM_STATE_VAR;
	inst[ic].SrcReg[2].Index = bias_p;
	ic++;
	}

	if (key->pixelMaps) {
	const GLuint temp = 1;

	/* create the colormap/texture now if not already done */
	if (!st->pixel_xfer.pixelmap_texture) {
	st->pixel_xfer.pixelmap_texture = st_create_color_map_texture(ctx);
	st->pixel_xfer.pixelmap_sampler_view =
	st_create_texture_sampler_view(st->pipe,
	st->pixel_xfer.pixelmap_texture);
	}

	/* with a little effort, we can do four pixel map look-ups with
	* two TEX instructions:
	*/

	/* TEX temp.rg, colorTemp.rgba, texture[1], 2D; */
	_mesa_init_instructions(inst + ic, 1);
	inst[ic].Opcode = OPCODE_TEX;
	inst[ic].DstReg.File = PROGRAM_TEMPORARY;
	inst[ic].DstReg.Index = temp;
	inst[ic].DstReg.WriteMask = WRITEMASK_XY; /* write R,G */
	inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
	inst[ic].SrcReg[0].Index = colorTemp;
	inst[ic].TexSrcUnit = 1;
	inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;
	ic++;

	/* TEX temp.ba, colorTemp.baba, texture[1], 2D; */
	_mesa_init_instructions(inst + ic, 1);
	inst[ic].Opcode = OPCODE_TEX;
	inst[ic].DstReg.File = PROGRAM_TEMPORARY;
	inst[ic].DstReg.Index = temp;
	inst[ic].DstReg.WriteMask = WRITEMASK_ZW; /* write B,A */
	inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
	inst[ic].SrcReg[0].Index = colorTemp;
	inst[ic].SrcReg[0].Swizzle = MAKE_SWIZZLE4(SWIZZLE_Z, SWIZZLE_W,
	SWIZZLE_Z, SWIZZLE_W);
	inst[ic].TexSrcUnit = 1;
	inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;
	ic++;

	/* MOV colorTemp, temp; */
	_mesa_init_instructions(inst + ic, 1);
	inst[ic].Opcode = OPCODE_MOV;
	inst[ic].DstReg.File = PROGRAM_TEMPORARY;
	inst[ic].DstReg.Index = colorTemp;
	inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
	inst[ic].SrcReg[0].Index = temp;
	ic++;

	fp->Base.SamplersUsed \|= (1 << 1); /* sampler 1 is used */
	}

	/* Modify last instruction's dst reg to write to result.color */
	{
	struct prog_instruction *last = &inst[ic - 1];
	last->DstReg.File = PROGRAM_OUTPUT;
	last->DstReg.Index = FRAG_RESULT_COLOR;
	}

	/* END; */
	_mesa_init_instructions(inst + ic, 1);
	inst[ic].Opcode = OPCODE_END;
	ic++;

	assert(ic <= MAX_INST);


	fp->Base.Instructions = _mesa_alloc_instructions(ic);
	if (!fp->Base.Instructions) {
	_mesa_error(ctx, GL_OUT_OF_MEMORY,
	"generating pixel transfer program");
	_mesa_free_parameter_list(params);
	return NULL;
	}

	_mesa_copy_instructions(fp->Base.Instructions, inst, ic);
	fp->Base.NumInstructions = ic;
	fp->Base.Parameters = params;

	#if 0
	printf("========= pixel transfer prog\n");
	_mesa_print_program(&fp->Base);
	_mesa_print_parameter_list(fp->Base.Parameters);
	#endif

	return fp;
	}



	/**
	* Update st->pixel_xfer.program in response to new pixel-transfer state.
	*/
	static void
	update_pixel_transfer(struct st_context *st)
	{
	struct gl_context *ctx = st->ctx;
	struct state_key key;
	struct gl_fragment_program *fp;

	make_state_key(st->ctx, &key);

	fp = (struct gl_fragment_program *)
	_mesa_search_program_cache(st->pixel_xfer.cache, &key, sizeof(key));
	if (!fp) {
	fp = get_pixel_transfer_program(st->ctx, &key);
	_mesa_program_cache_insert(st->ctx, st->pixel_xfer.cache,
	&key, sizeof(key), &fp->Base);
	}

	if (ctx->Pixel.MapColorFlag) {
	load_color_map_texture(ctx, st->pixel_xfer.pixelmap_texture);
	}
	st->pixel_xfer.pixelmap_enabled = ctx->Pixel.MapColorFlag;

	st->pixel_xfer.program = (struct st_fragment_program *) fp;
	}



	const struct st_tracked_state st_update_pixel_transfer = {
	"st_update_pixel_transfer", /* name */
	{ /* dirty */
	_NEW_PIXEL, /* mesa */
	0, /* st */
	},
	update_pixel_transfer /* update */
	};