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changes to get DDX/DDY working again

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This commit is contained in:
Brian 2007-05-02 18:45:44 -06:00
parent 62da6a1b3e
commit 60d136f63c
3 changed files with 10 additions and 0 deletions
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4
src/mesa/swrast/s_fragprog.c
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@ -113,6 +113,10 @@ init_machine(GLcontext *ctx, struct gl_program_machine *machine,
/* Setup pointer to input attributes */
machine->Attribs = span->array->attribs;
machine->DerivX = (GLfloat (*)[4]) span->attrStepX;
machine->DerivY = (GLfloat (*)[4]) span->attrStepY;
machine->NumDeriv = FRAG_ATTRIB_MAX;
if (ctx->Shader.CurrentProgram) {
/* Store front/back facing value in register FOGC.Y */
machine->Attribs[FRAG_ATTRIB_FOGC][col][1] = (GLfloat) ctx->_Facing;

4
src/mesa/swrast/s_span.c
View file

@ -1357,7 +1357,11 @@ shade_texture_span(GLcontext *ctx, SWspan *span)
if ((inputsRead >= FRAG_BIT_VAR0) && (span->interpMask & SPAN_VARYING))
interpolate_varying(ctx, span);
#if 0
if (inputsRead & FRAG_BIT_WPOS)
#else
/* XXX always interpolate wpos so that DDX/DDY work */
#endif
interpolate_wpos(ctx, span);
/* Run fragment program/shader now */

2
src/mesa/tnl/t_vb_program.c
View file

@ -126,6 +126,8 @@ init_machine(GLcontext *ctx, struct gl_program_machine *machine)
}
}
machine->NumDeriv = 0;
/* init condition codes */
machine->CondCodes[0] = COND_EQ;
machine->CondCodes[1] = COND_EQ;