+#define MIN3(a, b, c) ((a) < (b) ? MIN2(a, c) : MIN2(b, c))
+
+
+static void r300VapCntl(r300ContextPtr rmesa, GLuint input_count,
+ GLuint output_count, GLuint temp_count)
+{
+ int vtx_mem_size;
+ int pvs_num_slots;
+ int pvs_num_cntrls;
+
+ /* Flush PVS engine before changing PVS_NUM_SLOTS, PVS_NUM_CNTRLS.
+ * See r500 docs 6.5.2 - done in emit */
+
+ /* avoid division by zero */
+ if (input_count == 0) input_count = 1;
+ if (output_count == 0) output_count = 1;
+ if (temp_count == 0) temp_count = 1;
+
+ if (rmesa->radeon.radeonScreen->chip_family >= CHIP_FAMILY_RV515)
+ vtx_mem_size = 128;
+ else
+ vtx_mem_size = 72;
+
+ pvs_num_slots = MIN3(10, vtx_mem_size/input_count, vtx_mem_size/output_count);
+ pvs_num_cntrls = MIN2(6, vtx_mem_size/temp_count);
+
+ R300_STATECHANGE(rmesa, vap_cntl);
+ if (rmesa->radeon.radeonScreen->chip_flags & RADEON_CHIPSET_TCL) {
+ rmesa->hw.vap_cntl.cmd[R300_VAP_CNTL_INSTR] =
+ (pvs_num_slots << R300_PVS_NUM_SLOTS_SHIFT) |
+ (pvs_num_cntrls << R300_PVS_NUM_CNTLRS_SHIFT) |
+ (12 << R300_VF_MAX_VTX_NUM_SHIFT);
+ if (rmesa->radeon.radeonScreen->chip_family >= CHIP_FAMILY_RV515)
+ rmesa->hw.vap_cntl.cmd[R300_VAP_CNTL_INSTR] |= R500_TCL_STATE_OPTIMIZATION;
+ } else
+ /* not sure about non-tcl */
+ rmesa->hw.vap_cntl.cmd[R300_VAP_CNTL_INSTR] = ((10 << R300_PVS_NUM_SLOTS_SHIFT) |
+ (5 << R300_PVS_NUM_CNTLRS_SHIFT) |
+ (5 << R300_VF_MAX_VTX_NUM_SHIFT));
+
+ if (rmesa->radeon.radeonScreen->chip_family == CHIP_FAMILY_RV515)
+ rmesa->hw.vap_cntl.cmd[R300_VAP_CNTL_INSTR] |= (2 << R300_PVS_NUM_FPUS_SHIFT);
+ else if ((rmesa->radeon.radeonScreen->chip_family == CHIP_FAMILY_RV530) ||
+ (rmesa->radeon.radeonScreen->chip_family == CHIP_FAMILY_RV560))
+ rmesa->hw.vap_cntl.cmd[R300_VAP_CNTL_INSTR] |= (5 << R300_PVS_NUM_FPUS_SHIFT);
+ else if (rmesa->radeon.radeonScreen->chip_family == CHIP_FAMILY_R420)
+ rmesa->hw.vap_cntl.cmd[R300_VAP_CNTL_INSTR] |= (6 << R300_PVS_NUM_FPUS_SHIFT);
+ else if ((rmesa->radeon.radeonScreen->chip_family == CHIP_FAMILY_R520) ||
+ (rmesa->radeon.radeonScreen->chip_family == CHIP_FAMILY_R580) ||
+ (rmesa->radeon.radeonScreen->chip_family == CHIP_FAMILY_RV570))
+ rmesa->hw.vap_cntl.cmd[R300_VAP_CNTL_INSTR] |= (8 << R300_PVS_NUM_FPUS_SHIFT);
+ else
+ rmesa->hw.vap_cntl.cmd[R300_VAP_CNTL_INSTR] |= (4 << R300_PVS_NUM_FPUS_SHIFT);
+
+}
+