path: root/src/mesa/drivers/dri/r300/r300_vertexprog.c

/**************************************************************************

Copyright (C) 2005 Aapo Tahkola.

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
on 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
ATI, VA LINUX SYSTEMS AND/OR THEIR 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.

**************************************************************************/

/*
 * Authors:
 *   Aapo Tahkola <aet@rasterburn.org>
 */
#include "glheader.h"
#include "macros.h"
#include "enums.h"

#include "program.h"
#include "r300_context.h"
#include "nvvertprog.h"

#define SCALAR_FLAG (1<<31)
#define FLAG_MASK (1<<31)
#define OPN(operator, ip, op) {#operator, VP_OPCODE_##operator, ip, op}

struct{
	char *name;
	int opcode;
	unsigned long ip; /* number of input operands and flags */
	unsigned long op;
}op_names[]={
	OPN(ABS, 1, 1),
	OPN(ADD, 2, 1),
	OPN(ARL, 1, 1|SCALAR_FLAG),
	OPN(DP3, 2, 3|SCALAR_FLAG),
	OPN(DP4, 2, 3|SCALAR_FLAG),
	OPN(DPH, 2, 3|SCALAR_FLAG),
	OPN(DST, 2, 1),
	OPN(EX2, 1|SCALAR_FLAG, 4|SCALAR_FLAG),
	OPN(EXP, 1|SCALAR_FLAG, 1),
	OPN(FLR, 1, 1),
	OPN(FRC, 1, 1),
	OPN(LG2, 1|SCALAR_FLAG, 4|SCALAR_FLAG),
	OPN(LIT, 1, 1),
	OPN(LOG, 1|SCALAR_FLAG, 1),
	OPN(MAD, 3, 1),
	OPN(MAX, 2, 1),
	OPN(MIN, 2, 1),
	OPN(MOV, 1, 1),
	OPN(MUL, 2, 1),
	OPN(POW, 2|SCALAR_FLAG, 4|SCALAR_FLAG),
	OPN(RCP, 1|SCALAR_FLAG, 4|SCALAR_FLAG),
	OPN(RSQ, 1|SCALAR_FLAG, 4|SCALAR_FLAG),
	OPN(SGE, 2, 1),
	OPN(SLT, 2, 1),
	OPN(SUB, 2, 1),
	OPN(SWZ, 1, 1),
	OPN(XPD, 2, 1),
	OPN(RCC, 0, 0), //extra
	OPN(PRINT, 0, 0),
	OPN(END, 0, 0),
};
#undef OPN
#define OPN(rf) {#rf, PROGRAM_##rf}

struct{
	char *name;
	int id;
}register_file_names[]={
	OPN(TEMPORARY),
	OPN(INPUT),
	OPN(OUTPUT),
	OPN(LOCAL_PARAM),
	OPN(ENV_PARAM),
	OPN(NAMED_PARAM),
	OPN(STATE_VAR),
	OPN(WRITE_ONLY),
	OPN(ADDRESS),
};
	
char *dst_mask_names[4]={ "X", "Y", "Z", "W" };

/* from vertex program spec:
      Instruction    Inputs  Output   Description
      -----------    ------  ------   --------------------------------
      ABS            v       v        absolute value
      ADD            v,v     v        add
      ARL            v       a        address register load
      DP3            v,v     ssss     3-component dot product
      DP4            v,v     ssss     4-component dot product
      DPH            v,v     ssss     homogeneous dot product
      DST            v,v     v        distance vector
      EX2            s       ssss     exponential base 2
      EXP            s       v        exponential base 2 (approximate)
      FLR            v       v        floor
      FRC            v       v        fraction
      LG2            s       ssss     logarithm base 2
      LIT            v       v        compute light coefficients
      LOG            s       v        logarithm base 2 (approximate)
      MAD            v,v,v   v        multiply and add
      MAX            v,v     v        maximum
      MIN            v,v     v        minimum
      MOV            v       v        move
      MUL            v,v     v        multiply
      POW            s,s     ssss     exponentiate
      RCP            s       ssss     reciprocal
      RSQ            s       ssss     reciprocal square root
      SGE            v,v     v        set on greater than or equal
      SLT            v,v     v        set on less than
      SUB            v,v     v        subtract
      SWZ            v       v        extended swizzle
      XPD            v,v     v        cross product
*/

void dump_program_params(GLcontext *ctx, struct vertex_program *vp)
{
	int i;
	int pi;

	fprintf(stderr, "NumInstructions=%d\n", vp->Base.NumInstructions);
	fprintf(stderr, "NumTemporaries=%d\n", vp->Base.NumTemporaries);
	fprintf(stderr, "NumParameters=%d\n", vp->Base.NumParameters);
	fprintf(stderr, "NumAttributes=%d\n", vp->Base.NumAttributes);
	fprintf(stderr, "NumAddressRegs=%d\n", vp->Base.NumAddressRegs);
	
	_mesa_load_state_parameters(ctx, vp->Parameters);
			
#if 0	
	for(pi=0; pi < vp->Base.NumParameters; pi++){
		fprintf(stderr, "{ ");
		for(i=0; i < 4; i++)
			fprintf(stderr, "%f ", vp->Base.LocalParams[pi][i]);
		fprintf(stderr, "}\n");
	}
#endif	
	for(pi=0; pi < vp->Parameters->NumParameters; pi++){
		fprintf(stderr, "param %02d:", pi);
		
		switch(vp->Parameters->Parameters[pi].Type){
			
		case NAMED_PARAMETER:
			fprintf(stderr, "%s", vp->Parameters->Parameters[pi].Name);
			fprintf(stderr, "(NAMED_PARAMETER)");
		break;
		
		case CONSTANT:
			fprintf(stderr, "(CONSTANT)");
		break;
		
		case STATE:
			fprintf(stderr, "(STATE)\n");
		break;

		}
		
		fprintf(stderr, "{ ");
		for(i=0; i < 4; i++)
			fprintf(stderr, "%f ", vp->Parameters->Parameters[pi].Values[i]);
		fprintf(stderr, "}\n");
		
	}
}

static void debug_vp(GLcontext *ctx, struct vertex_program *vp)
{
	struct vp_instruction *vpi;
	int i, operand_index;
	int operator_index;
	
	dump_program_params(ctx, vp);

	vpi=vp->Instructions;
	
	for(;; vpi++){
		if(vpi->Opcode == VP_OPCODE_END)
			break;
		
		for(i=0; i < sizeof(op_names) / sizeof(*op_names); i++){
			if(vpi->Opcode == op_names[i].opcode){
				fprintf(stderr, "%s ", op_names[i].name);
				break;
			}
		}
		operator_index=i;
		
		for(i=0; i < sizeof(register_file_names) / sizeof(*register_file_names); i++){
			if(vpi->DstReg.File == register_file_names[i].id){
				fprintf(stderr, "%s ", register_file_names[i].name);
				break;
			}
		}
		
		fprintf(stderr, "%d.", vpi->DstReg.Index);
		
		for(i=0; i < 4; i++)
			if(vpi->DstReg.WriteMask[i])
				fprintf(stderr, "%s", dst_mask_names[i]);
		fprintf(stderr, " ");
		
		for(operand_index=0; operand_index < (op_names[operator_index].ip & (~FLAG_MASK));
			operand_index++){
				
			if(vpi->SrcReg[operand_index].Negate)
				fprintf(stderr, "-");
			
			for(i=0; i < sizeof(register_file_names) / sizeof(*register_file_names); i++){
				if(vpi->SrcReg[operand_index].File == register_file_names[i].id){
					fprintf(stderr, "%s ", register_file_names[i].name);
					break;
				}
			}
			fprintf(stderr, "%d.", vpi->SrcReg[operand_index].Index);
			
			for(i=0; i < 4; i++)
				fprintf(stderr, "%s", dst_mask_names[vpi->SrcReg[operand_index].Swizzle[i]]);
			
			if(operand_index+1 < (op_names[operator_index].ip & (~FLAG_MASK)) )
				fprintf(stderr, ",");
		}
		fprintf(stderr, "\n");
	}
	
}

void r300VertexProgUpdateParams(GLcontext *ctx, struct r300_vertex_program *vp)
{
	int pi;
	struct vertex_program *mesa_vp=(void *)vp;
	int dst_index;
	
	_mesa_load_state_parameters(ctx, mesa_vp->Parameters);
	
	//debug_vp(ctx, mesa_vp);
	
	dst_index=0;
	for(pi=0; pi < mesa_vp->Parameters->NumParameters; pi++){
		switch(mesa_vp->Parameters->Parameters[pi].Type){
			
		case STATE:
		case NAMED_PARAMETER:
			//fprintf(stderr, "%s", vp->Parameters->Parameters[pi].Name);
		case CONSTANT:
			vp->params.body.f[dst_index++]=mesa_vp->Parameters->Parameters[pi].Values[0];
			vp->params.body.f[dst_index++]=mesa_vp->Parameters->Parameters[pi].Values[1];
			vp->params.body.f[dst_index++]=mesa_vp->Parameters->Parameters[pi].Values[2];
			vp->params.body.f[dst_index++]=mesa_vp->Parameters->Parameters[pi].Values[3];
		break;
		
		default: _mesa_problem(NULL, "Bad param type in %s", __FUNCTION__);
		}
	
	}
	
	vp->params.length=dst_index;
}
		
static unsigned long t_dst_mask(GLboolean *mask)
{
	unsigned long flags=0;
	
	if(mask[0]) flags |= VSF_FLAG_X;
	if(mask[1]) flags |= VSF_FLAG_Y;
	if(mask[2]) flags |= VSF_FLAG_Z;
	if(mask[3]) flags |= VSF_FLAG_W;
	
	return flags;
}

static unsigned long t_dst_class(enum register_file file)
{
	
	switch(file){
		case PROGRAM_TEMPORARY:
			return VSF_OUT_CLASS_TMP;
		case PROGRAM_OUTPUT:
			return VSF_OUT_CLASS_RESULT;
		/*	
		case PROGRAM_INPUT:
		case PROGRAM_LOCAL_PARAM:
		case PROGRAM_ENV_PARAM:
		case PROGRAM_NAMED_PARAM:
		case PROGRAM_STATE_VAR:
		case PROGRAM_WRITE_ONLY:
		case PROGRAM_ADDRESS:
		*/
		default:
			fprintf(stderr, "problem in %s", __FUNCTION__);
			exit(0);
	}
}

static unsigned long t_src_class(enum register_file file)
{
	
	switch(file){
		case PROGRAM_TEMPORARY:
			return VSF_IN_CLASS_TMP;
			
		case PROGRAM_INPUT:
			return VSF_IN_CLASS_ATTR;
			
		case PROGRAM_LOCAL_PARAM:
		case PROGRAM_ENV_PARAM:
		case PROGRAM_NAMED_PARAM:
		case PROGRAM_STATE_VAR:
			return VSF_IN_CLASS_PARAM;
		/*	
		case PROGRAM_OUTPUT:
		case PROGRAM_WRITE_ONLY:
		case PROGRAM_ADDRESS:
		*/
		default:
			fprintf(stderr, "problem in %s", __FUNCTION__);
			exit(0);
	}
}

static unsigned long t_swizzle(GLubyte swizzle)
{
	switch(swizzle){
		case 0: return VSF_IN_COMPONENT_X;
		case 1: return VSF_IN_COMPONENT_Y;
		case 2: return VSF_IN_COMPONENT_Z;
		case 3: return VSF_IN_COMPONENT_W;
		
		case SWIZZLE_ZERO:
		case SWIZZLE_ONE:
		default:
			fprintf(stderr, "problem in %s", __FUNCTION__);
			exit(0);
	}
}
		
static unsigned long t_src_index(struct r300_vertex_program *vp, struct vp_src_register *src)
{
	int i;
	int max_reg=-1;
	
	if(src->File == PROGRAM_INPUT){
		/*
		switch(src->Index){
			case 0: return 0;
			case 3: return 1;
			
			case 2: return 2;
			case 8: return 8;
			
		default: printf("unknown input index %d\n", src->Index); exit(0); break;
		}*/
				
		if(vp->inputs[src->Index] != -1)
			return vp->inputs[src->Index];
		
		for(i=0; i < VERT_ATTRIB_MAX; i++)
			if(vp->inputs[i] > max_reg)
				max_reg=vp->inputs[i];
		
		vp->inputs[src->Index]=max_reg+1;
		
		return vp->inputs[src->Index];
	}else{
		return src->Index;
	}
}

static unsigned long t_src(struct r300_vertex_program *vp, struct vp_src_register *src)
{
	
	return MAKE_VSF_SOURCE(t_src_index(vp, src),
				t_swizzle(src->Swizzle[0]),
				t_swizzle(src->Swizzle[1]),
				t_swizzle(src->Swizzle[2]),
				t_swizzle(src->Swizzle[3]),
				t_src_class(src->File),
				src->Negate ? VSF_FLAG_ALL : VSF_FLAG_NONE);
}

static unsigned long t_opcode(enum vp_opcode opcode)
{

	switch(opcode){
		case VP_OPCODE_ADD: return R300_VPI_OUT_OP_ADD;
		case VP_OPCODE_DST: return R300_VPI_OUT_OP_DST;
		case VP_OPCODE_EX2: return R300_VPI_OUT_OP_EX2;
		case VP_OPCODE_EXP: return R300_VPI_OUT_OP_EXP;
		case VP_OPCODE_FRC: return R300_VPI_OUT_OP_FRC;
		case VP_OPCODE_LG2: return R300_VPI_OUT_OP_LG2;
		case VP_OPCODE_LIT: return R300_VPI_OUT_OP_LIT;
		case VP_OPCODE_LOG: return R300_VPI_OUT_OP_LOG;
		case VP_OPCODE_MAD: return R300_VPI_OUT_OP_MAD;
		case VP_OPCODE_MAX: return R300_VPI_OUT_OP_MAX;
		case VP_OPCODE_MIN: return R300_VPI_OUT_OP_MIN;
		case VP_OPCODE_MUL: return R300_VPI_OUT_OP_MUL;
		case VP_OPCODE_POW: return R300_VPI_OUT_OP_POW;
		case VP_OPCODE_RCP: return R300_VPI_OUT_OP_RCP;
		case VP_OPCODE_RSQ: return R300_VPI_OUT_OP_RSQ;
		case VP_OPCODE_SGE: return R300_VPI_OUT_OP_SGE;
		case VP_OPCODE_SLT: return R300_VPI_OUT_OP_SLT;
		case VP_OPCODE_DP4: return R300_VPI_OUT_OP_DOT;
		
		default: 
			fprintf(stderr, "%s: Should not be called with opcode %d!", __FUNCTION__, opcode);
	}
	exit(-1);
	return 0;
}

static unsigned long op_operands(enum vp_opcode opcode)
{
	int i;
	
	/* Can we trust mesas opcodes to be in order ? */
	for(i=0; i < sizeof(op_names) / sizeof(*op_names); i++)
		if(op_names[i].opcode == opcode)
			return op_names[i].ip;
	
	fprintf(stderr, "op %d not found in op_names\n", opcode);
	exit(-1);
	return 0;
}
	
static void translate_program(struct r300_vertex_program *vp)
{
	struct vertex_program *mesa_vp=(void *)vp;
	struct vp_instruction *vpi;
	int operand_index, i;
	VERTEX_SHADER_INSTRUCTION t2rs[1024];
	VERTEX_SHADER_INSTRUCTION *o_inst;
	unsigned long operands;
	
	vp->t2rs=0;
	vp->program.length=0;
	vp->num_temporaries=mesa_vp->Base.NumTemporaries;
	
	for(i=0; i < VERT_ATTRIB_MAX; i++)
		vp->inputs[i]=-1;
	
	o_inst=vp->program.body.i;
	for(vpi=mesa_vp->Instructions; vpi->Opcode != VP_OPCODE_END; vpi++, o_inst++){
		
		operands=op_operands(vpi->Opcode);
		
		/* these ops need special handling.
		   Ops that need temp vars should probably be given reg indexes starting at the end of tmp area. */
		switch(vpi->Opcode){
		case VP_OPCODE_MOV://ADD RESULT 1.X Y Z W PARAM 0{} {X Y Z W} PARAM 0{} {ZERO ZERO ZERO ZERO} 
			o_inst->op=MAKE_VSF_OP(R300_VPI_OUT_OP_ADD, vpi->DstReg.Index,
					t_dst_mask(vpi->DstReg.WriteMask), t_dst_class(vpi->DstReg.File));
			o_inst->src1=t_src(vp, &vpi->SrcReg[0]);
			o_inst->src2=MAKE_VSF_SOURCE(t_src_index(vp, &vpi->SrcReg[0]),
					SWIZZLE_ZERO, SWIZZLE_ZERO,
					SWIZZLE_ZERO, SWIZZLE_ZERO,
					t_src_class(vpi->SrcReg[0].File), VSF_FLAG_NONE);

			o_inst->src3=0;
			goto next;
			
		case VP_OPCODE_DP3://DOT RESULT 1.X Y Z W PARAM 0{} {X Y Z ZERO} PARAM 0{} {X Y Z ZERO} 
			o_inst->op=MAKE_VSF_OP(R300_VPI_OUT_OP_DOT, vpi->DstReg.Index,
					t_dst_mask(vpi->DstReg.WriteMask), t_dst_class(vpi->DstReg.File));
			
			o_inst->src1=MAKE_VSF_SOURCE(t_src_index(vp, &vpi->SrcReg[0]),
					t_swizzle(vpi->SrcReg[0].Swizzle[0]),
					t_swizzle(vpi->SrcReg[0].Swizzle[1]),
					t_swizzle(vpi->SrcReg[0].Swizzle[2]),
					SWIZZLE_ZERO,
					t_src_class(vpi->SrcReg[0].File),
					vpi->SrcReg[0].Negate ? VSF_FLAG_ALL : VSF_FLAG_NONE);
			
			o_inst->src2=MAKE_VSF_SOURCE(t_src_index(vp, &vpi->SrcReg[1]),
					t_swizzle(vpi->SrcReg[1].Swizzle[0]),
					t_swizzle(vpi->SrcReg[1].Swizzle[1]),
					t_swizzle(vpi->SrcReg[1].Swizzle[2]),
					SWIZZLE_ZERO,
					t_src_class(vpi->SrcReg[1].File),
					vpi->SrcReg[1].Negate ? VSF_FLAG_ALL : VSF_FLAG_NONE);

			o_inst->src3=0;
			goto next;
			
		case VP_OPCODE_ABS://MAX RESULT 1.X Y Z W PARAM 0{} {X Y Z W} PARAM 0{X Y Z W } {X Y Z W} neg Xneg Yneg Zneg W
		case VP_OPCODE_ARL:
		case VP_OPCODE_DPH://DOT RESULT 1.X Y Z W PARAM 0{} {X Y Z ONE} PARAM 0{} {X Y Z W} 
		case VP_OPCODE_FLR:
		/* FRC TMP 0.X Y Z W PARAM 0{} {X Y Z W} 
		   ADD RESULT 1.X Y Z W PARAM 0{} {X Y Z W} TMP 0{X Y Z W } {X Y Z W} neg Xneg Yneg Zneg W */

		case VP_OPCODE_SUB://ADD RESULT 1.X Y Z W TMP 0{} {X Y Z W} PARAM 1{X Y Z W } {X Y Z W} neg Xneg Yneg Zneg W
		case VP_OPCODE_SWZ:
		case VP_OPCODE_XPD:
		/* ADD TMP 0.X Y Z PARAM 0{} {X Y Z W} PARAM 0{} {ZERO ZERO ZERO ZERO} 
		   MUL TMP 1.X Y Z W TMP 0{} {Z X Y ZERO} PARAM 1{} {Y Z X ZERO} 
		   MAD RESULT 1.X Y Z W TMP 0{} {Y Z X ONE} PARAM 1{} {Z X Y ONE} TMP 1{X Y Z W } {X Y Z W} neg Xneg Yneg Zneg W*/

		case VP_OPCODE_RCC:
		case VP_OPCODE_PRINT:
			//vp->num_temporaries++;
			fprintf(stderr, "Dont know how to handle op %d yet\n", vpi->Opcode);
			exit(-1);
		break;
		case VP_OPCODE_END:
			break;
		default:
			break;
		}
	
		o_inst->op=MAKE_VSF_OP(t_opcode(vpi->Opcode), vpi->DstReg.Index,
				t_dst_mask(vpi->DstReg.WriteMask), t_dst_class(vpi->DstReg.File));

		switch(operands){
			case 1:
				o_inst->src1=t_src(vp, &vpi->SrcReg[0]);
				o_inst->src2=0;
				o_inst->src3=0;
			break;
			
			case 2:
				o_inst->src1=t_src(vp, &vpi->SrcReg[0]);
				o_inst->src2=t_src(vp, &vpi->SrcReg[1]);
				o_inst->src3=0;
			break;
			
			case 3:
				o_inst->src1=t_src(vp, &vpi->SrcReg[0]);
				o_inst->src2=t_src(vp, &vpi->SrcReg[1]);
				o_inst->src3=t_src(vp, &vpi->SrcReg[2]);
			break;
			
			default:
				fprintf(stderr, "scalars and op RCC not handled yet");
				exit(-1);
			break;
		}
		next:
				
		/* If instruction writes to result and one of the inputs is tmp, we move it at the end of program */
		if(vpi->DstReg.File == PROGRAM_OUTPUT){
			for(operand_index=0; operand_index < operands; operand_index++)
				if(vpi->SrcReg[operand_index].File == PROGRAM_TEMPORARY){
					t2rs[vp->t2rs++]=*o_inst;
					o_inst--; /* FIXME */
					break;
				}
		}
		
	}
	/* Put "tmp to result" instructions in */
	for(i=0; i < vp->t2rs; i++, o_inst++)
		*o_inst=t2rs[i];
		
	vp->program.length=(o_inst - vp->program.body.i) * 4;
	vp->translated=GL_TRUE;
}

static void r300BindProgram(GLcontext *ctx, GLenum target, struct program *prog)
{
	r300ContextPtr rmesa = R300_CONTEXT(ctx);
	struct r300_vertex_program *vp=(void *)prog;
#if 0			
	fprintf(stderr, "r300BindProgram\n");
#endif	
	if(rmesa->current_vp == vp)
		return ;
	
	rmesa->current_vp = vp;
}

/* Mesa doesnt seem to have prototype for this */
struct program *
_mesa_init_ati_fragment_shader( GLcontext *ctx, struct ati_fragment_shader *prog,
                           GLenum target, GLuint id);

static struct program *r300NewProgram(GLcontext *ctx, GLenum target, GLuint id)
{
	struct r300_vertex_program *vp;
	struct fragment_program *fp;
	struct ati_fragment_shader *afs;
#if 0
	fprintf(stderr, "r300NewProgram, target=%d, id=%d\n", target, id);
#endif
	switch(target){
		case GL_VERTEX_PROGRAM_ARB:
			vp=CALLOC_STRUCT(r300_vertex_program);
		return _mesa_init_vertex_program(ctx, &vp->mesa_program, target, id);
		
		case GL_FRAGMENT_PROGRAM_ARB:
			fp=CALLOC_STRUCT(fragment_program);
		return _mesa_init_fragment_program(ctx, fp, target, id);
		
		case GL_FRAGMENT_PROGRAM_NV:
			fp=CALLOC_STRUCT(fragment_program);
		return _mesa_init_fragment_program(ctx, fp, target, id);
		
		case GL_FRAGMENT_SHADER_ATI:
			afs=CALLOC_STRUCT(ati_fragment_shader);
		return _mesa_init_ati_fragment_shader(ctx, afs, target, id);
	}
	
	return NULL;	
}


static void r300DeleteProgram(GLcontext *ctx, struct program *prog)
{
	r300ContextPtr rmesa = R300_CONTEXT(ctx);
	struct r300_vertex_program *vp=(void *)prog;
#if 0			
	fprintf(stderr, "r300DeleteProgram\n");
#endif	
	if(rmesa->current_vp == vp)
		rmesa->current_vp = NULL;
	
	_mesa_delete_program(ctx, prog);
}
     
static GLboolean r300IsProgramNative(GLcontext *ctx, GLenum target,
				struct program *prog);

static void r300ProgramStringNotify(GLcontext *ctx, GLenum target, 
				struct program *prog)
{
	struct r300_vertex_program *vp=(void *)prog;
#if 0			
	fprintf(stderr, "r300ProgramStringNotify\n");
#endif
		
	switch(target) {
	case GL_VERTEX_PROGRAM_ARB:
		vp->translated=GL_FALSE;
		break;
	}
	
	/* XXX: There is still something wrong as mesa doesnt call r300IsProgramNative at all */
	(void)r300IsProgramNative(ctx, target, prog);

}

static GLboolean r300IsProgramNative(GLcontext *ctx, GLenum target,
				struct program *prog)
{
	struct r300_vertex_program *vp=(void *)prog;
	r300ContextPtr rmesa = R300_CONTEXT(ctx);
	
#if 0			
	fprintf(stderr, "r300IsProgramNative\n");
	//exit(0);
	debug_vp(ctx, vp);
#endif
	translate_program(vp);
	//r300VertexProgUpdateParams(ctx, vp);

	return 1;
}

/* This is misnamed and shouldnt be here since fragment programs use these functions too */		
void r300InitVertexProgFuncs(struct dd_function_table *functions)
{
	functions->NewProgram=r300NewProgram;
	functions->BindProgram=r300BindProgram;
	functions->DeleteProgram=r300DeleteProgram;
	functions->ProgramStringNotify=r300ProgramStringNotify;
	functions->IsProgramNative=r300IsProgramNative;
}