Texture Instruction - Fixed Color

runtime/Makefile

@@ -10,7 +10,7 @@ CFLAGS += -I./include -I../hw
 
 PROJECT = libvortexrt
 
-SRCS = ./src/vx_start.S ./src/vx_print.S ./src/vx_print.c ./src/vx_spawn.c
+SRCS = ./src/vx_start.S ./src/vx_print.S ./src/vx_print.c ./src/vx_spawn.c ./src/vx_tex.c 
 
 OBJS := $(addsuffix .o, $(notdir $(SRCS)))
 

runtime/include/vx_intrinsics.h

@@ -109,6 +109,14 @@ inline int vx_num_instrs() {
     return result; 
 }
 
+// Texture load instruction
+inline int vx_tex_ld(unsigned t, unsigned u, unsigned v, unsigned lod_t) {
+    lod_t = (lod_t << 8) | t;
+    int result;
+    asm volatile (".insn r4 0x6b, 5, 1, %0, %1, %2, %3" :: "r"(result), "r"(u), "r"(v), "r"(lod_t));
+    return result; 
+}
+
 #define __if(b) vx_split(b); \
                 if (b) 
 

runtime/include/vx_tex.h

@@ -0,0 +1,17 @@
+#ifndef VX_API_H
+#define VX_API_H
+
+#include <stdint.h>
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int vx_tex(unsigned t, unsigned u, unsigned v, unsigned lod);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

runtime/src/vx_tex.S

@@ -0,0 +1,9 @@
+#include <VX_config.h>
+
+@ .type vx_tex_ld, @function
+@ .global vx_tex_ld
+@ vx_tex_ld:
+@     slli	a1,a1,0x8
+@     or	a1,a1,a0
+@     .word 0x5ae7952b
+@     ret

runtime/src/vx_tex.c

@@ -0,0 +1,13 @@
+#include <vx_tex.h>
+#include <vx_intrinsics.h>
+#include <inttypes.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define NUM_CORES_MAX 32
+
+int vx_tex(unsigned t, unsigned u, unsigned v, unsigned lod){
+    return vx_tex_ld(t,u,v,lod);
+}