+++ /dev/null
-
-#include "brw_context.h"
-#include "brw_eu.h"
-#include "brw_wm.h"
-#include "util/u_math.h"
-#include "util/u_memory.h"
-#include "pipe/p_shader_tokens.h"
-#include "tgsi/tgsi_parse.h"
-
-static struct brw_reg alloc_tmp(struct brw_wm_compile *c)
-{
- c->tmp_index++;
- c->reg_index = MAX2(c->reg_index, c->tmp_start + c->tmp_index);
- return brw_vec8_grf(c->tmp_start + c->tmp_index, 0);
-}
-
-static void release_tmps(struct brw_wm_compile *c)
-{
- c->tmp_index = 0;
-}
-
-
-
-static int is_null( struct brw_reg reg )
-{
- return (reg.file == BRW_ARCHITECTURE_REGISTER_FILE &&
- reg.nr == BRW_ARF_NULL);
-}
-
-static void emit_pixel_xy( struct brw_wm_compile *c )
-{
- if (is_null(c->pixel_xy[0])) {
-
- struct brw_compile *p = &c->func;
- struct brw_reg r1_uw = retype(brw_vec1_grf(1, 0), BRW_REGISTER_TYPE_UW);
-
- c->pixel_xy[0] = vec8(retype(alloc_tmp(c), BRW_REGISTER_TYPE_UW));
- c->pixel_xy[1] = vec8(retype(alloc_tmp(c), BRW_REGISTER_TYPE_UW));
-
- /* Calculate pixel centers by adding 1 or 0 to each of the
- * micro-tile coordinates passed in r1.
- */
- brw_ADD(p,
- c->pixel_xy[0],
- stride(suboffset(r1_uw, 4), 2, 4, 0),
- brw_imm_v(0x10101010));
-
- brw_ADD(p,
- c->pixel_xy[1],
- stride(suboffset(r1_uw, 5), 2, 4, 0),
- brw_imm_v(0x11001100));
- }
-}
-
-
-
-
-
-
-static void emit_delta_xy( struct brw_wm_compile *c )
-{
- if (is_null(c->delta_xy[0])) {
- struct brw_compile *p = &c->func;
- struct brw_reg r1 = brw_vec1_grf(1, 0);
-
- emit_pixel_xy(c);
-
- c->delta_xy[0] = alloc_tmp(c);
- c->delta_xy[1] = alloc_tmp(c);
-
- /* Calc delta X,Y by subtracting origin in r1 from the pixel
- * centers.
- */
- brw_ADD(p,
- c->delta_xy[0],
- retype(c->pixel_xy[0], BRW_REGISTER_TYPE_UW),
- negate(r1));
-
- brw_ADD(p,
- c->delta_xy[1],
- retype(c->pixel_xy[1], BRW_REGISTER_TYPE_UW),
- negate(suboffset(r1,1)));
- }
-}
-
-
-
-#if 0
-static void emit_pixel_w( struct brw_wm_compile *c )
-{
- if (is_null(c->pixel_w)) {
- struct brw_compile *p = &c->func;
-
- struct brw_reg interp_wpos = c->coef_wpos;
-
- c->pixel_w = alloc_tmp(c);
-
- emit_delta_xy(c);
-
- /* Calc 1/w - just linterp wpos[3] optimized by putting the
- * result straight into a message reg.
- */
- struct brw_reg interp3 = brw_vec1_grf(interp_wpos.nr+1, 4);
- brw_LINE(p, brw_null_reg(), interp3, c->delta_xy[0]);
- brw_MAC(p, brw_message_reg(2), suboffset(interp3, 1), c->delta_xy[1]);
-
- /* Calc w */
- brw_math_16( p,
- c->pixel_w,
- BRW_MATH_FUNCTION_INV,
- BRW_MATH_SATURATE_NONE,
- 2,
- brw_null_reg(),
- BRW_MATH_PRECISION_FULL);
- }
-}
-#endif
-
-
-static void emit_cinterp(struct brw_wm_compile *c,
- int idx,
- int mask )
-{
- struct brw_compile *p = &c->func;
- struct brw_reg interp[4];
- struct brw_reg coef = c->payload_coef[idx];
- int i;
-
- interp[0] = brw_vec1_grf(coef.nr, 0);
- interp[1] = brw_vec1_grf(coef.nr, 4);
- interp[2] = brw_vec1_grf(coef.nr+1, 0);
- interp[3] = brw_vec1_grf(coef.nr+1, 4);
-
- for(i = 0; i < 4; i++ ) {
- if (mask & (1<<i)) {
- struct brw_reg dst = c->wm_regs[TGSI_FILE_INPUT][idx][i];
- brw_MOV(p, dst, suboffset(interp[i],3));
- }
- }
-}
-
-static void emit_linterp(struct brw_wm_compile *c,
- int idx,
- int mask )
-{
- struct brw_compile *p = &c->func;
- struct brw_reg interp[4];
- struct brw_reg coef = c->payload_coef[idx];
- int i;
-
- emit_delta_xy(c);
-
- interp[0] = brw_vec1_grf(coef.nr, 0);
- interp[1] = brw_vec1_grf(coef.nr, 4);
- interp[2] = brw_vec1_grf(coef.nr+1, 0);
- interp[3] = brw_vec1_grf(coef.nr+1, 4);
-
- for(i = 0; i < 4; i++ ) {
- if (mask & (1<<i)) {
- struct brw_reg dst = c->wm_regs[TGSI_FILE_INPUT][idx][i];
- brw_LINE(p, brw_null_reg(), interp[i], c->delta_xy[0]);
- brw_MAC(p, dst, suboffset(interp[i],1), c->delta_xy[1]);
- }
- }
-}
-
-#if 0
-static void emit_pinterp(struct brw_wm_compile *c,
- int idx,
- int mask )
-{
- struct brw_compile *p = &c->func;
- struct brw_reg interp[4];
- struct brw_reg coef = c->payload_coef[idx];
- int i;
-
- get_delta_xy(c);
- get_pixel_w(c);
-
- interp[0] = brw_vec1_grf(coef.nr, 0);
- interp[1] = brw_vec1_grf(coef.nr, 4);
- interp[2] = brw_vec1_grf(coef.nr+1, 0);
- interp[3] = brw_vec1_grf(coef.nr+1, 4);
-
- for(i = 0; i < 4; i++ ) {
- if (mask & (1<<i)) {
- struct brw_reg dst = allocate_reg(c, TGSI_FILE_INPUT, idx, i);
- brw_LINE(p, brw_null_reg(), interp[i], c->delta_xy[0]);
- brw_MAC(p, dst, suboffset(interp[i],1), c->delta_xy[1]);
- brw_MUL(p, dst, dst, c->pixel_w);
- }
- }
-}
-#endif
-
-
-
-#if 0
-static void emit_wpos( )
-{
- struct prog_dst_register dst = dst_reg(PROGRAM_INPUT, idx);
- struct tgsi_full_src_register interp = src_reg(PROGRAM_PAYLOAD, idx);
- struct tgsi_full_src_register deltas = get_delta_xy(c);
- struct tgsi_full_src_register arg2;
- unsigned opcode;
-
- opcode = WM_LINTERP;
- arg2 = src_undef();
-
- /* Have to treat wpos.xy specially:
- */
- emit_op(c,
- WM_WPOSXY,
- dst_mask(dst, WRITEMASK_XY),
- 0, 0, 0,
- get_pixel_xy(c),
- src_undef(),
- src_undef());
-
- dst = dst_mask(dst, WRITEMASK_ZW);
-
- /* PROGRAM_INPUT.attr.xyzw = INTERP payload.interp[attr].x, deltas.xyw
- */
- emit_op(c,
- WM_LINTERP,
- dst,
- 0, 0, 0,
- interp,
- deltas,
- arg2);
-}
-#endif
-
-
-
-
-/* Perform register allocation:
- *
- * -- r0???
- * -- passthrough depth regs (and stencil/aa??)
- * -- curbe ??
- * -- inputs (coefficients)
- *
- * Use a totally static register allocation. This will perform poorly
- * but is an easy way to get started (again).
- */
-static void prealloc_reg(struct brw_wm_compile *c)
-{
- int i, j;
- int nr_curbe_regs = 0;
-
- /* R0, then some depth related regs:
- */
- for (i = 0; i < c->key.nr_depth_regs; i++) {
- c->payload_depth[i] = brw_vec8_grf(i*2, 0);
- c->reg_index += 2;
- }
-
-
- /* Then a copy of our part of the CURBE entry:
- */
- {
- int nr_constants = c->fp->info.file_max[TGSI_FILE_CONSTANT] + 1;
- int index = 0;
-
- /* XXX number of constants, or highest numbered constant? */
- assert(nr_constants == c->fp->info.file_count[TGSI_FILE_CONSTANT]);
-
- c->prog_data.max_const = 4*nr_constants;
- for (i = 0; i < nr_constants; i++) {
- for (j = 0; j < 4; j++, index++)
- c->wm_regs[TGSI_FILE_CONSTANT][i][j] = brw_vec1_grf(c->reg_index + index/8,
- index%8);
- }
-
- nr_curbe_regs = 2*((4*nr_constants+15)/16);
- c->reg_index += nr_curbe_regs;
- }
-
- /* Adjust for parameter coefficients for position, which are
- * currently always provided.
- */
-// c->position_coef[i] = brw_vec8_grf(c->reg_index, 0);
- c->reg_index += 2;
-
- /* Next we receive the plane coefficients for parameter
- * interpolation:
- */
- assert(c->fp->info.file_max[TGSI_FILE_INPUT] == c->fp->info.num_inputs);
- for (i = 0; i < c->fp->info.file_max[TGSI_FILE_INPUT] + 1; i++) {
- c->payload_coef[i] = brw_vec8_grf(c->reg_index, 0);
- c->reg_index += 2;
- }
-
- c->prog_data.first_curbe_grf = c->key.nr_depth_regs * 2;
- c->prog_data.urb_read_length = (c->fp->info.num_inputs + 1) * 2;
- c->prog_data.curb_read_length = nr_curbe_regs;
-
- /* That's the end of the payload, now we can start allocating registers.
- */
- c->emit_mask_reg = brw_uw1_reg(BRW_GENERAL_REGISTER_FILE, c->reg_index, 0);
- c->reg_index++;
-
- c->stack = brw_uw16_reg(BRW_GENERAL_REGISTER_FILE, c->reg_index, 0);
- c->reg_index += 2;
-
- /* Now allocate room for the interpolated inputs and staging
- * registers for the outputs:
- */
- /* XXX do we want to loop over the _number_ of inputs/outputs or loop
- * to the highest input/output index that's used?
- * Probably the same, actually.
- */
- assert(c->fp->info.file_max[TGSI_FILE_INPUT] + 1 == c->fp->info.num_inputs);
- assert(c->fp->info.file_max[TGSI_FILE_OUTPUT] + 1 == c->fp->info.num_outputs);
- for (i = 0; i < c->fp->info.file_max[TGSI_FILE_INPUT] + 1; i++)
- for (j = 0; j < 4; j++)
- c->wm_regs[TGSI_FILE_INPUT][i][j] = brw_vec8_grf( c->reg_index++, 0 );
-
- for (i = 0; i < c->fp->info.file_max[TGSI_FILE_OUTPUT] + 1; i++)
- for (j = 0; j < 4; j++)
- c->wm_regs[TGSI_FILE_OUTPUT][i][j] = brw_vec8_grf( c->reg_index++, 0 );
-
- /* Beyond this we should only need registers for internal temporaries:
- */
- c->tmp_start = c->reg_index;
-}
-
-
-
-
-
-/* Need to interpolate fragment program inputs in as a preamble to the
- * shader. A more sophisticated compiler would do this on demand, but
- * we'll do it up front:
- */
-void brw_wm_emit_decls(struct brw_wm_compile *c)
-{
- struct tgsi_parse_context parse;
- int done = 0;
-
- prealloc_reg(c);
-
- tgsi_parse_init( &parse, c->fp->program.tokens );
-
- while( !done &&
- !tgsi_parse_end_of_tokens( &parse ) )
- {
- tgsi_parse_token( &parse );
-
- switch( parse.FullToken.Token.Type ) {
- case TGSI_TOKEN_TYPE_DECLARATION:
- {
- const struct tgsi_full_declaration *decl = &parse.FullToken.FullDeclaration;
- unsigned first = decl->DeclarationRange.First;
- unsigned last = decl->DeclarationRange.Last;
- unsigned mask = decl->Declaration.UsageMask; /* ? */
- unsigned i;
-
- if (decl->Declaration.File != TGSI_FILE_INPUT)
- break;
-
- for( i = first; i <= last; i++ ) {
- switch (decl->Declaration.Interpolate) {
- case TGSI_INTERPOLATE_CONSTANT:
- emit_cinterp(c, i, mask);
- break;
-
- case TGSI_INTERPOLATE_LINEAR:
- emit_linterp(c, i, mask);
- break;
-
- case TGSI_INTERPOLATE_PERSPECTIVE:
- //emit_pinterp(c, i, mask);
- emit_linterp(c, i, mask);
- break;
- }
- }
- break;
- }
- case TGSI_TOKEN_TYPE_IMMEDIATE:
- case TGSI_TOKEN_TYPE_INSTRUCTION:
- default:
- done = 1;
- break;
- }
- }
-
- tgsi_parse_free (&parse);
-
- release_tmps(c);
-}
projects / mesa.git / blobdiff