static void
handle_sample_op(GLcontext * ctx, struct atifs_machine *machine,
struct atifs_instruction *inst, const struct sw_span *span,
GLuint column)
{
GLuint idx = inst->DstReg[0].Index - GL_REG_0_ATI;
GLuint swizzle = inst->DstReg[0].Swizzle;
GLuint sample_tex = inst->SrcReg[0][0].Index;
/* if we get here after passing pass one then we are starting pass two - backup the registers */
if (machine->pass == 1) {
finish_pass(machine);
machine->pass = 2;
}
if (sample_tex >= GL_TEXTURE0_ARB && sample_tex <= GL_TEXTURE7_ARB) {
sample_tex -= GL_TEXTURE0_ARB;
fetch_texel(ctx, span->array->texcoords[sample_tex][column], 0.0F,
sample_tex, machine->Registers[idx]);
}
else if (sample_tex >= GL_REG_0_ATI && sample_tex <= GL_REG_5_ATI) {
/* this is wrong... */
sample_tex -= GL_REG_0_ATI;
fetch_texel(ctx, machine->Registers[sample_tex], 0, sample_tex,
machine->Registers[idx]);
}
apply_swizzle(machine, idx, swizzle);
}
static void
handle_sample_op(struct gl_context * ctx, struct atifs_machine *machine,
struct atifs_setupinst *texinst, const SWspan *span,
GLuint column, GLuint idx)
{
/* sample from unit idx using texinst->src as coords */
GLuint swizzle = texinst->swizzle;
GLuint coord_source = texinst->src;
GLfloat tex_coords[4] = { 0 };
if (coord_source >= GL_TEXTURE0_ARB && coord_source <= GL_TEXTURE7_ARB) {
coord_source -= GL_TEXTURE0_ARB;
COPY_4V(tex_coords,
span->array->attribs[FRAG_ATTRIB_TEX0 + coord_source][column]);
}
else if (coord_source >= GL_REG_0_ATI && coord_source <= GL_REG_5_ATI) {
coord_source -= GL_REG_0_ATI;
COPY_4V(tex_coords, machine->PrevPassRegisters[coord_source]);
}
apply_swizzle(tex_coords, swizzle);
fetch_texel(ctx, tex_coords, 0.0F, idx, machine->Registers[idx]);
}