REVIEWED: Make sure SSE is being used when compiling with MSVC

Added log info and some formatting for visibility

src/external/rlsw.h

@@ -94,11 +94,9 @@
 #ifndef SW_MALLOC
     #define SW_MALLOC(sz) malloc(sz)
 #endif
-
 #ifndef SW_REALLOC
     #define SW_REALLOC(ptr, newSz) realloc(ptr, newSz)
 #endif
-
 #ifndef SW_FREE
     #define SW_FREE(ptr) free(ptr)
 #endif
@@ -152,12 +150,6 @@
     #define SW_CLIP_EPSILON                 1e-4f
 #endif
 
-#ifdef __cplusplus
-    #define CURLY_INIT(name) name
-#else
-    #define CURLY_INIT(name) (name)
-#endif
-
 //----------------------------------------------------------------------------------
 // OpenGL Compatibility Types
 //----------------------------------------------------------------------------------
@@ -610,9 +602,19 @@ SWAPI void swBindTexture(uint32_t id);
 #define RLSW_IMPLEMENTATION
 #if defined(RLSW_IMPLEMENTATION)
 
-#include <stdlib.h>
-#include <stddef.h>
-#include <math.h>           // Required for: floorf(), fabsf()
+#include <stdlib.h>         // Required for: malloc(), free()
+#include <stddef.h>         // Required for: NULL, size_t, uint8_t, uint16_t, uint32_t...
+#include <math.h>           // Required for: sinf(), cosf(), floorf(), fabsf(), sqrtf(), roundf()
+
+// Simple log system to avoid printf() calls if required
+// NOTE: Avoiding those calls, also avoids const strings memory usage
+#define SW_SUPPORT_LOG_INFO
+#if defined(SW_SUPPORT_LOG_INFO) //&& defined(_DEBUG)      // WARNING: LOG() output required for this tool
+    #include <stdio.h>
+    #define SW_LOG(...) printf(__VA_ARGS__)
+#else
+    #define SW_LOG(...)
+#endif
 
 #if defined(_MSC_VER)
     #define SW_ALIGN(x) __declspec(align(x))
@@ -634,56 +636,47 @@ SWAPI void swBindTexture(uint32_t id);
     #define SW_ARCH_RISCV
 #endif
 
+// Check for SIMD vector instructions
 #if defined(__FMA__) && defined(__AVX2__)
     #define SW_HAS_FMA_AVX2
     #include <immintrin.h>
 #endif
-
 #if defined(__FMA__) && defined(__AVX__)
     #define SW_HAS_FMA_AVX
     #include <immintrin.h>
 #endif
-
 #if defined(__AVX2__)
     #define SW_HAS_AVX2
     #include <immintrin.h>
 #endif
-
 #if defined(__AVX__)
     #define SW_HAS_AVX
     #include <immintrin.h>
 #endif
-
 #if defined(__SSE4_2__)
     #define SW_HAS_SSE42
     #include <nmmintrin.h>
 #endif
-
 #if defined(__SSE4_1__)
     #define SW_HAS_SSE41
     #include <smmintrin.h>
 #endif
-
 #if defined(__SSSE3__)
     #define SW_HAS_SSSE3
     #include <tmmintrin.h>
 #endif
-
 #if defined(__SSE3__)
     #define SW_HAS_SSE3
     #include <pmmintrin.h>
 #endif
-
-#if defined(__SSE2__)
+#if defined(__SSE2__) || (defined(_M_AMD64) || defined(_M_X64)) // SSE2 x64
     #define SW_HAS_SSE2
     #include <emmintrin.h>
 #endif
-
 #if defined(__SSE__)
     #define SW_HAS_SSE
     #include <xmmintrin.h>
 #endif
-
 #if defined(__ARM_NEON) || defined(__aarch64__)
     #if defined(__ARM_FEATURE_FMA)
         #define SW_HAS_NEON_FMA
@@ -692,12 +685,17 @@ SWAPI void swBindTexture(uint32_t id);
     #endif
     #include <arm_neon.h>
 #endif
-
-#ifdef __riscv_vector
+#if defined(__riscv_vector)
     #define SW_HAS_RVV
     #include <riscv_vector.h>
 #endif
 
+#ifdef __cplusplus
+    #define SW_CURLY_INIT(name) name
+#else
+    #define SW_CURLY_INIT(name) (name)
+#endif
+
 //----------------------------------------------------------------------------------
 // Defines and Macros
 //----------------------------------------------------------------------------------
@@ -3608,6 +3606,23 @@ bool swInit(int w, int h)
 
     RLSW.loadedTextureCount = 1;
     
+    SW_LOG("INFO: RLSW: Software renderer initialized successfully\n");
+#if defined(SW_HAS_FMA_AVX) && defined(SW_HAS_FMA_AVX2)
+    SW_LOG("INFO: RLSW: Using SIMD instructions: FMA AVX\n");
+#endif
+#if defined(SW_HAS_AVX) || defined(SW_HAS_AVX2)
+    SW_LOG("INFO: RLSW: Using SIMD instructions: AVX\n");
+#endif
+#if defined(SW_HAS_SSE) || defined(SW_HAS_SSE2) || defined(SW_HAS_SSE3) || defined(SW_HAS_SSE41) || defined(SW_HAS_SSE42)
+    SW_LOG("INFO: RLSW: Using SIMD instructions: SSE\n");
+#endif
+#if defined(SW_HAS_NEON_FMA) || defined(SW_HAS_NEON)
+    SW_LOG("INFO: RLSW: Using SIMD instructions: NEON\n");
+#endif
+#if defined(SW_HAS_RVV)
+    SW_LOG("INFO: RLSW: Using SIMD instructions: RVV\n");
+#endif
+
     return true;
 }
 
@@ -3626,7 +3641,7 @@ void swClose(void)
     SW_FREE(RLSW.loadedTextures);
     SW_FREE(RLSW.freeTextureIds);
 
-    RLSW = CURLY_INIT(sw_context_t) { 0 };
+    RLSW = SW_CURLY_INIT(sw_context_t) { 0 };
 }
 
 bool swResizeFramebuffer(int w, int h)