r600g: implement output modifiers and use them to further optimize LRP
[mesa.git] / src / gallium / drivers / r600 / r600_asm.c
index 8a7f3ce575c74ea624d1403599cbf4f98e684afa..2a62b06cc6041429508afe1e3df8a6b68a00de2d 100644 (file)
  */
 #include <stdio.h>
 #include <errno.h>
+#include "util/u_format.h"
 #include "util/u_memory.h"
+#include "pipe/p_shader_tokens.h"
 #include "r600_pipe.h"
 #include "r600_sq.h"
 #include "r600_opcodes.h"
 #include "r600_asm.h"
+#include "r600_formats.h"
+#include "r600d.h"
 
 static inline unsigned int r600_bc_get_num_operands(struct r600_bc_alu *alu)
 {
@@ -55,8 +59,8 @@ static inline unsigned int r600_bc_get_num_operands(struct r600_bc_alu *alu)
        case V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_DOT4:
        case V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_DOT4_IEEE:
        case V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_CUBE:
-               return 2;  
-               
+               return 2;
+
        case V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_MOV: 
        case V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_MOVA_FLOOR:
        case V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_FRACT:
@@ -74,7 +78,7 @@ static inline unsigned int r600_bc_get_num_operands(struct r600_bc_alu *alu)
        default: R600_ERR(
                "Need instruction operand number for 0x%x.\n", alu->inst); 
        };
-       
+
        return 3;
 }
 
@@ -137,20 +141,21 @@ int r600_bc_init(struct r600_bc *bc, enum radeon_family family)
        case CHIP_RV635:
        case CHIP_RS780:
        case CHIP_RS880:
-               bc->chiprev = 0;
+               bc->chiprev = CHIPREV_R600;
                break;
        case CHIP_RV770:
        case CHIP_RV730:
        case CHIP_RV710:
        case CHIP_RV740:
-               bc->chiprev = 1;
+               bc->chiprev = CHIPREV_R700;
                break;
        case CHIP_CEDAR:
        case CHIP_REDWOOD:
        case CHIP_JUNIPER:
        case CHIP_CYPRESS:
        case CHIP_HEMLOCK:
-               bc->chiprev = 2;
+       case CHIP_PALM:
+               bc->chiprev = CHIPREV_EVERGREEN;
                break;
        default:
                R600_ERR("unknown family %d\n", bc->family);
@@ -199,9 +204,9 @@ const unsigned bank_swizzle_vec[8] = {SQ_ALU_VEC_210,  //000
                                      SQ_ALU_VEC_012}; //111
 
 const unsigned bank_swizzle_scl[8] = {SQ_ALU_SCL_210,  //000
-                                     SQ_ALU_SCL_122,  //001 
+                                     SQ_ALU_SCL_122,  //001
                                      SQ_ALU_SCL_122,  //010
-                                     
+
                                      SQ_ALU_SCL_221,  //011
                                      SQ_ALU_SCL_212,  //100
                                      SQ_ALU_SCL_122,  //101
@@ -502,6 +507,8 @@ int r600_bc_add_literal(struct r600_bc *bc, const u32 *value)
        }
        /* same on EG */
        if (((bc->cf_last->inst != (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU << 3)) &&
+            (bc->cf_last->inst != (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP_AFTER << 3)) &&
+            (bc->cf_last->inst != (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP2_AFTER << 3)) &&
             (bc->cf_last->inst != (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_PUSH_BEFORE << 3))) ||
                LIST_IS_EMPTY(&bc->cf_last->alu)) {
                R600_ERR("last CF is not ALU (%p)\n", bc->cf_last);
@@ -592,10 +599,34 @@ int r600_bc_add_cfinst(struct r600_bc *bc, int inst)
 /* common to all 3 families */
 static int r600_bc_vtx_build(struct r600_bc *bc, struct r600_bc_vtx *vtx, unsigned id)
 {
-       bc->bytecode[id++] = S_SQ_VTX_WORD0_BUFFER_ID(vtx->buffer_id) |
-                               S_SQ_VTX_WORD0_SRC_GPR(vtx->src_gpr) |
-                               S_SQ_VTX_WORD0_SRC_SEL_X(vtx->src_sel_x) |
-                               S_SQ_VTX_WORD0_MEGA_FETCH_COUNT(vtx->mega_fetch_count);
+       unsigned fetch_resource_start = 0;
+
+       /* check if we are fetch shader */
+                       /* fetch shader can also access vertex resource,
+                        * first fetch shader resource is at 160
+                        */
+       if (bc->type == -1) {
+               switch (bc->chiprev) {
+               /* r600 */
+               case CHIPREV_R600:
+               /* r700 */
+               case CHIPREV_R700:
+                       fetch_resource_start = 160;
+                       break;
+               /* evergreen */
+               case CHIPREV_EVERGREEN:
+                       fetch_resource_start = 0;
+                       break;
+               default:
+                       fprintf(stderr,  "%s:%s:%d unknown chiprev %d\n",
+                               __FILE__, __func__, __LINE__, bc->chiprev);
+                       break;
+               }
+       }
+       bc->bytecode[id++] = S_SQ_VTX_WORD0_BUFFER_ID(vtx->buffer_id + fetch_resource_start) |
+                       S_SQ_VTX_WORD0_SRC_GPR(vtx->src_gpr) |
+                       S_SQ_VTX_WORD0_SRC_SEL_X(vtx->src_sel_x) |
+                       S_SQ_VTX_WORD0_MEGA_FETCH_COUNT(vtx->mega_fetch_count);
        bc->bytecode[id++] = S_SQ_VTX_WORD1_DST_SEL_X(vtx->dst_sel_x) |
                                S_SQ_VTX_WORD1_DST_SEL_Y(vtx->dst_sel_y) |
                                S_SQ_VTX_WORD1_DST_SEL_Z(vtx->dst_sel_z) |
@@ -676,10 +707,11 @@ static int r600_bc_alu_build(struct r600_bc *bc, struct r600_bc_alu *alu, unsign
                                        S_SQ_ALU_WORD1_OP2_SRC0_ABS(alu->src[0].abs) |
                                        S_SQ_ALU_WORD1_OP2_SRC1_ABS(alu->src[1].abs) |
                                        S_SQ_ALU_WORD1_OP2_WRITE_MASK(alu->dst.write) |
+                                       S_SQ_ALU_WORD1_OP2_OMOD(alu->omod) |
                                        S_SQ_ALU_WORD1_OP2_ALU_INST(alu->inst) |
                                        S_SQ_ALU_WORD1_BANK_SWIZZLE(alu->bank_swizzle) |
-                                       S_SQ_ALU_WORD1_OP2_UPDATE_EXECUTE_MASK(alu->predicate) |
-                                       S_SQ_ALU_WORD1_OP2_UPDATE_PRED(alu->predicate);
+                                       S_SQ_ALU_WORD1_OP2_UPDATE_EXECUTE_MASK(alu->predicate) |
+                                       S_SQ_ALU_WORD1_OP2_UPDATE_PRED(alu->predicate);
        }
        if (alu->last) {
                if (alu->nliteral && !alu->literal_added) {
@@ -699,6 +731,8 @@ static int r600_bc_cf_build(struct r600_bc *bc, struct r600_bc_cf *cf)
 
        switch (cf->inst) {
        case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU << 3):
+       case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP_AFTER << 3):
+       case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP2_AFTER << 3):
        case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_PUSH_BEFORE << 3):
                bc->bytecode[id++] = S_SQ_CF_ALU_WORD0_ADDR(cf->addr >> 1) |
                        S_SQ_CF_ALU_WORD0_KCACHE_MODE0(cf->kcache0_mode) |
@@ -710,7 +744,7 @@ static int r600_bc_cf_build(struct r600_bc *bc, struct r600_bc_cf *cf)
                        S_SQ_CF_ALU_WORD1_KCACHE_ADDR0(cf->kcache0_addr) |
                        S_SQ_CF_ALU_WORD1_KCACHE_ADDR1(cf->kcache1_addr) |
                                        S_SQ_CF_ALU_WORD1_BARRIER(1) |
-                                       S_SQ_CF_ALU_WORD1_USES_WATERFALL(bc->chiprev == 0 ? cf->r6xx_uses_waterfall : 0) |
+                                       S_SQ_CF_ALU_WORD1_USES_WATERFALL(bc->chiprev == CHIPREV_R600 ? cf->r6xx_uses_waterfall : 0) |
                                        S_SQ_CF_ALU_WORD1_COUNT((cf->ndw / 2) - 1);
                break;
        case V_SQ_CF_WORD1_SQ_CF_INST_TEX:
@@ -742,6 +776,8 @@ static int r600_bc_cf_build(struct r600_bc *bc, struct r600_bc_cf *cf)
        case V_SQ_CF_WORD1_SQ_CF_INST_LOOP_END:
        case V_SQ_CF_WORD1_SQ_CF_INST_LOOP_CONTINUE:
        case V_SQ_CF_WORD1_SQ_CF_INST_LOOP_BREAK:
+       case V_SQ_CF_WORD1_SQ_CF_INST_CALL_FS:
+       case V_SQ_CF_WORD1_SQ_CF_INST_RETURN:
                bc->bytecode[id++] = S_SQ_CF_WORD0_ADDR(cf->cf_addr >> 1);
                bc->bytecode[id++] = S_SQ_CF_WORD1_CF_INST(cf->inst) |
                                        S_SQ_CF_WORD1_BARRIER(1) |
@@ -766,7 +802,10 @@ int r600_bc_build(struct r600_bc *bc)
        int r;
 
        if (bc->callstack[0].max > 0)
-           bc->nstack = ((bc->callstack[0].max + 3) >> 2) + 2;
+               bc->nstack = ((bc->callstack[0].max + 3) >> 2) + 2;
+       if (bc->type == TGSI_PROCESSOR_VERTEX && !bc->nstack) {
+               bc->nstack = 1;
+       }
 
        /* first path compute addr of each CF block */
        /* addr start after all the CF instructions */
@@ -774,6 +813,8 @@ int r600_bc_build(struct r600_bc *bc)
        LIST_FOR_EACH_ENTRY(cf, &bc->cf, list) {
                switch (cf->inst) {
                case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU << 3):
+               case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP_AFTER << 3):
+               case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP2_AFTER << 3):
                case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_PUSH_BEFORE << 3):
                        break;
                case V_SQ_CF_WORD1_SQ_CF_INST_TEX:
@@ -795,6 +836,8 @@ int r600_bc_build(struct r600_bc *bc)
                case V_SQ_CF_WORD1_SQ_CF_INST_LOOP_END:
                case V_SQ_CF_WORD1_SQ_CF_INST_LOOP_CONTINUE:
                case V_SQ_CF_WORD1_SQ_CF_INST_LOOP_BREAK:
+               case V_SQ_CF_WORD1_SQ_CF_INST_CALL_FS:
+               case V_SQ_CF_WORD1_SQ_CF_INST_RETURN:
                        break;
                default:
                        R600_ERR("unsupported CF instruction (0x%X)\n", cf->inst);
@@ -810,7 +853,7 @@ int r600_bc_build(struct r600_bc *bc)
                return -ENOMEM;
        LIST_FOR_EACH_ENTRY(cf, &bc->cf, list) {
                addr = cf->addr;
-               if (bc->chiprev == 2)
+               if (bc->chiprev == CHIPREV_EVERGREEN)
                        r = eg_bc_cf_build(bc, cf);
                else
                        r = r600_bc_cf_build(bc, cf);
@@ -818,14 +861,16 @@ int r600_bc_build(struct r600_bc *bc)
                        return r;
                switch (cf->inst) {
                case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU << 3):
+               case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP_AFTER << 3):
+               case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_POP2_AFTER << 3):
                case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU_PUSH_BEFORE << 3):
                        LIST_FOR_EACH_ENTRY(alu, &cf->alu, list) {
                                switch(bc->chiprev) {
-                               case 0:
+                               case CHIPREV_R600:
                                        r = r600_bc_alu_build(bc, alu, addr);
                                        break;
-                               case 1:
-                               case 2: /* eg alu is same encoding as r700 */
+                               case CHIPREV_R700:
+                               case CHIPREV_EVERGREEN: /* eg alu is same encoding as r700 */
                                        r = r700_bc_alu_build(bc, alu, addr);
                                        break;
                                default:
@@ -868,6 +913,8 @@ int r600_bc_build(struct r600_bc *bc)
                case V_SQ_CF_WORD1_SQ_CF_INST_JUMP:
                case V_SQ_CF_WORD1_SQ_CF_INST_ELSE:
                case V_SQ_CF_WORD1_SQ_CF_INST_POP:
+               case V_SQ_CF_WORD1_SQ_CF_INST_CALL_FS:
+               case V_SQ_CF_WORD1_SQ_CF_INST_RETURN:
                        break;
                default:
                        R600_ERR("unsupported CF instruction (0x%X)\n", cf->inst);
@@ -912,3 +959,342 @@ void r600_bc_clear(struct r600_bc *bc)
 
        LIST_INITHEAD(&cf->list);
 }
+
+void r600_bc_dump(struct r600_bc *bc)
+{
+       unsigned i;
+       char chip = '6';
+
+       switch (bc->chiprev) {
+       case 1:
+               chip = '7';
+               break;
+       case 2:
+               chip = 'E';
+               break;
+       case 0:
+       default:
+               chip = '6';
+               break;
+       }
+       fprintf(stderr, "bytecode %d dw -----------------------\n", bc->ndw);
+       fprintf(stderr, "     %c\n", chip);
+       for (i = 0; i < bc->ndw; i++) {
+               fprintf(stderr, "0x%08X\n", bc->bytecode[i]);
+       }
+       fprintf(stderr, "--------------------------------------\n");
+}
+
+void r600_cf_vtx(struct r600_vertex_element *ve, u32 *bytecode, unsigned count)
+{
+       struct r600_pipe_state *rstate;
+       unsigned i = 0;
+
+       if (count > 8) {
+               bytecode[i++] = S_SQ_CF_WORD0_ADDR(8 >> 1);
+               bytecode[i++] = S_SQ_CF_WORD1_CF_INST(V_SQ_CF_WORD1_SQ_CF_INST_VTX) |
+                                               S_SQ_CF_WORD1_BARRIER(1) |
+                                               S_SQ_CF_WORD1_COUNT(8 - 1);
+               bytecode[i++] = S_SQ_CF_WORD0_ADDR(40 >> 1);
+               bytecode[i++] = S_SQ_CF_WORD1_CF_INST(V_SQ_CF_WORD1_SQ_CF_INST_VTX) |
+                                               S_SQ_CF_WORD1_BARRIER(1) |
+                                               S_SQ_CF_WORD1_COUNT(count - 8 - 1);
+       } else {
+               bytecode[i++] = S_SQ_CF_WORD0_ADDR(8 >> 1);
+               bytecode[i++] = S_SQ_CF_WORD1_CF_INST(V_SQ_CF_WORD1_SQ_CF_INST_VTX) |
+                                               S_SQ_CF_WORD1_BARRIER(1) |
+                                               S_SQ_CF_WORD1_COUNT(count - 1);
+       }
+       bytecode[i++] = S_SQ_CF_WORD0_ADDR(0);
+       bytecode[i++] = S_SQ_CF_WORD1_CF_INST(V_SQ_CF_WORD1_SQ_CF_INST_RETURN) |
+                       S_SQ_CF_WORD1_BARRIER(1);
+
+       rstate = &ve->rstate;
+       rstate->id = R600_PIPE_STATE_FETCH_SHADER;
+       rstate->nregs = 0;
+       r600_pipe_state_add_reg(rstate, R_0288A4_SQ_PGM_RESOURCES_FS,
+                               0x00000000, 0xFFFFFFFF, NULL);
+       r600_pipe_state_add_reg(rstate, R_0288DC_SQ_PGM_CF_OFFSET_FS,
+                               0x00000000, 0xFFFFFFFF, NULL);
+       r600_pipe_state_add_reg(rstate, R_028894_SQ_PGM_START_FS,
+                               r600_bo_offset(ve->fetch_shader) >> 8,
+                               0xFFFFFFFF, ve->fetch_shader);
+}
+
+void r600_cf_vtx_tc(struct r600_vertex_element *ve, u32 *bytecode, unsigned count)
+{
+       struct r600_pipe_state *rstate;
+       unsigned i = 0;
+
+       if (count > 8) {
+               bytecode[i++] = S_SQ_CF_WORD0_ADDR(8 >> 1);
+               bytecode[i++] = S_SQ_CF_WORD1_CF_INST(V_SQ_CF_WORD1_SQ_CF_INST_VTX_TC) |
+                                               S_SQ_CF_WORD1_BARRIER(1) |
+                                               S_SQ_CF_WORD1_COUNT(8 - 1);
+               bytecode[i++] = S_SQ_CF_WORD0_ADDR(40 >> 1);
+               bytecode[i++] = S_SQ_CF_WORD1_CF_INST(V_SQ_CF_WORD1_SQ_CF_INST_VTX_TC) |
+                                               S_SQ_CF_WORD1_BARRIER(1) |
+                                               S_SQ_CF_WORD1_COUNT((count - 8) - 1);
+       } else {
+               bytecode[i++] = S_SQ_CF_WORD0_ADDR(8 >> 1);
+               bytecode[i++] = S_SQ_CF_WORD1_CF_INST(V_SQ_CF_WORD1_SQ_CF_INST_VTX_TC) |
+                                               S_SQ_CF_WORD1_BARRIER(1) |
+                                               S_SQ_CF_WORD1_COUNT(count - 1);
+       }
+       bytecode[i++] = S_SQ_CF_WORD0_ADDR(0);
+       bytecode[i++] = S_SQ_CF_WORD1_CF_INST(V_SQ_CF_WORD1_SQ_CF_INST_RETURN) |
+                       S_SQ_CF_WORD1_BARRIER(1);
+
+       rstate = &ve->rstate;
+       rstate->id = R600_PIPE_STATE_FETCH_SHADER;
+       rstate->nregs = 0;
+       r600_pipe_state_add_reg(rstate, R_0288A4_SQ_PGM_RESOURCES_FS,
+                               0x00000000, 0xFFFFFFFF, NULL);
+       r600_pipe_state_add_reg(rstate, R_0288DC_SQ_PGM_CF_OFFSET_FS,
+                               0x00000000, 0xFFFFFFFF, NULL);
+       r600_pipe_state_add_reg(rstate, R_028894_SQ_PGM_START_FS,
+                               r600_bo_offset(ve->fetch_shader) >> 8,
+                               0xFFFFFFFF, ve->fetch_shader);
+}
+
+static void r600_vertex_data_type(enum pipe_format pformat, unsigned *format,
+                               unsigned *num_format, unsigned *format_comp)
+{
+       const struct util_format_description *desc;
+       unsigned i;
+
+       *format = 0;
+       *num_format = 0;
+       *format_comp = 0;
+
+       desc = util_format_description(pformat);
+       if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN) {
+               goto out_unknown;
+       }
+
+       /* Find the first non-VOID channel. */
+       for (i = 0; i < 4; i++) {
+               if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
+                       break;
+               }
+       }
+
+       switch (desc->channel[i].type) {
+               /* Half-floats, floats, doubles */
+       case UTIL_FORMAT_TYPE_FLOAT:
+               switch (desc->channel[i].size) {
+               case 16:
+                       switch (desc->nr_channels) {
+                       case 1:
+                               *format = FMT_16_FLOAT;
+                               break;
+                       case 2:
+                               *format = FMT_16_16_FLOAT;
+                               break;
+                       case 3:
+                               *format = FMT_16_16_16_FLOAT;
+                               break;
+                       case 4:
+                               *format = FMT_16_16_16_16_FLOAT;
+                               break;
+                       }
+                       break;
+               case 32:
+                       switch (desc->nr_channels) {
+                       case 1:
+                               *format = FMT_32_FLOAT;
+                               break;
+                       case 2:
+                               *format = FMT_32_32_FLOAT;
+                               break;
+                       case 3:
+                               *format = FMT_32_32_32_FLOAT;
+                               break;
+                       case 4:
+                               *format = FMT_32_32_32_32_FLOAT;
+                               break;
+                       }
+                       break;
+               default:
+                       goto out_unknown;
+               }
+               break;
+               /* Unsigned ints */
+       case UTIL_FORMAT_TYPE_UNSIGNED:
+               /* Signed ints */
+       case UTIL_FORMAT_TYPE_SIGNED:
+               switch (desc->channel[i].size) {
+               case 8:
+                       switch (desc->nr_channels) {
+                       case 1:
+                               *format = FMT_8;
+                               break;
+                       case 2:
+                               *format = FMT_8_8;
+                               break;
+                       case 3:
+                       //      *format = FMT_8_8_8; /* fails piglit draw-vertices test */
+                       //      break;
+                       case 4:
+                               *format = FMT_8_8_8_8;
+                               break;
+                       }
+                       break;
+               case 16:
+                       switch (desc->nr_channels) {
+                       case 1:
+                               *format = FMT_16;
+                               break;
+                       case 2:
+                               *format = FMT_16_16;
+                               break;
+                       case 3:
+                       //      *format = FMT_16_16_16; /* fails piglit draw-vertices test */
+                       //      break;
+                       case 4:
+                               *format = FMT_16_16_16_16;
+                               break;
+                       }
+                       break;
+               case 32:
+                       switch (desc->nr_channels) {
+                       case 1:
+                               *format = FMT_32;
+                               break;
+                       case 2:
+                               *format = FMT_32_32;
+                               break;
+                       case 3:
+                               *format = FMT_32_32_32;
+                               break;
+                       case 4:
+                               *format = FMT_32_32_32_32;
+                               break;
+                       }
+                       break;
+               default:
+                       goto out_unknown;
+               }
+               break;
+       default:
+               goto out_unknown;
+       }
+
+       if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
+               *format_comp = 1;
+       }
+       if (desc->channel[i].normalized) {
+               *num_format = 0;
+       } else {
+               *num_format = 2;
+       }
+       return;
+out_unknown:
+       R600_ERR("unsupported vertex format %s\n", util_format_name(pformat));
+}
+
+static void r600_bc(unsigned ndw, unsigned chiprev, u32 *bytecode)
+{
+       unsigned i;
+       char chip = '6';
+
+       switch (chiprev) {
+       case 1:
+               chip = '7';
+               break;
+       case 2:
+               chip = 'E';
+               break;
+       case 0:
+       default:
+               chip = '6';
+               break;
+       }
+       fprintf(stderr, "bytecode %d dw -----------------------\n", ndw);
+       fprintf(stderr, "    %c\n", chip);
+       for (i = 0; i < ndw; i++) {
+               fprintf(stderr, "0x%08X\n", bytecode[i]);
+       }
+       fprintf(stderr, "--------------------------------------\n");
+}
+
+int r600_vertex_elements_build_fetch_shader(struct r600_pipe_context *rctx, struct r600_vertex_element *ve)
+{
+       unsigned ndw, i;
+       u32 *bytecode;
+       unsigned fetch_resource_start = 0, format, num_format, format_comp;
+       struct pipe_vertex_element *elements = ve->elements;
+       const struct util_format_description *desc;
+
+       /* 2 dwords for cf aligned to 4 + 4 dwords per input */
+       ndw = 8 + ve->count * 4;
+       ve->fs_size = ndw * 4;
+
+       /* use PIPE_BIND_VERTEX_BUFFER so we use the cache buffer manager */
+       ve->fetch_shader = r600_bo(rctx->radeon, ndw*4, 256, PIPE_BIND_VERTEX_BUFFER, 0);
+       if (ve->fetch_shader == NULL) {
+               return -ENOMEM;
+       }
+
+       bytecode = r600_bo_map(rctx->radeon, ve->fetch_shader, 0, NULL);
+       if (bytecode == NULL) {
+               r600_bo_reference(rctx->radeon, &ve->fetch_shader, NULL);
+               return -ENOMEM;
+       }
+
+       if (rctx->family >= CHIP_CEDAR) {
+               eg_cf_vtx(ve, &bytecode[0], (ndw - 8) / 4);
+       } else {
+               r600_cf_vtx(ve, &bytecode[0], (ndw - 8) / 4);
+               fetch_resource_start = 160;
+       }
+
+       /* vertex elements offset need special handling, if offset is bigger
+        * than what we can put in fetch instruction then we need to alterate
+        * the vertex resource offset. In such case in order to simplify code
+        * we will bound one resource per elements. It's a worst case scenario.
+        */
+       for (i = 0; i < ve->count; i++) {
+               ve->vbuffer_offset[i] = C_SQ_VTX_WORD2_OFFSET & elements[i].src_offset;
+               if (ve->vbuffer_offset[i]) {
+                       ve->vbuffer_need_offset = 1;
+               }
+       }
+
+       for (i = 0; i < ve->count; i++) {
+               unsigned vbuffer_index;
+               r600_vertex_data_type(ve->hw_format[i], &format, &num_format, &format_comp);
+               desc = util_format_description(ve->hw_format[i]);
+               if (desc == NULL) {
+                       R600_ERR("unknown format %d\n", ve->hw_format[i]);
+                       r600_bo_reference(rctx->radeon, &ve->fetch_shader, NULL);
+                       return -EINVAL;
+               }
+
+               /* see above for vbuffer_need_offset explanation */
+               vbuffer_index = elements[i].vertex_buffer_index;
+               if (ve->vbuffer_need_offset) {
+                       bytecode[8 + i * 4 + 0] = S_SQ_VTX_WORD0_BUFFER_ID(i + fetch_resource_start);
+               } else {
+                       bytecode[8 + i * 4 + 0] = S_SQ_VTX_WORD0_BUFFER_ID(vbuffer_index + fetch_resource_start);
+               }
+               bytecode[8 + i * 4 + 0] |= S_SQ_VTX_WORD0_SRC_GPR(0) |
+                                       S_SQ_VTX_WORD0_SRC_SEL_X(0) |
+                                       S_SQ_VTX_WORD0_MEGA_FETCH_COUNT(0x1F);
+               bytecode[8 + i * 4 + 1] = S_SQ_VTX_WORD1_DST_SEL_X(desc->swizzle[0]) |
+                                       S_SQ_VTX_WORD1_DST_SEL_Y(desc->swizzle[1]) |
+                                       S_SQ_VTX_WORD1_DST_SEL_Z(desc->swizzle[2]) |
+                                       S_SQ_VTX_WORD1_DST_SEL_W(desc->swizzle[3]) |
+                                       S_SQ_VTX_WORD1_USE_CONST_FIELDS(0) |
+                                       S_SQ_VTX_WORD1_DATA_FORMAT(format) |
+                                       S_SQ_VTX_WORD1_NUM_FORMAT_ALL(num_format) |
+                                       S_SQ_VTX_WORD1_FORMAT_COMP_ALL(format_comp) |
+                                       S_SQ_VTX_WORD1_SRF_MODE_ALL(1) |
+                                       S_SQ_VTX_WORD1_GPR_DST_GPR(i + 1);
+               bytecode[8 + i * 4 + 2] = S_SQ_VTX_WORD2_OFFSET(elements[i].src_offset) |
+                                       S_SQ_VTX_WORD2_MEGA_FETCH(1);
+               bytecode[8 + i * 4 + 3] = 0;
+       }
+       r600_bo_unmap(rctx->radeon, ve->fetch_shader);
+       return 0;
+}