Implemented LoadTile f3d command, I4/I8/RGBA32 texture formats.

src/pc/gfx/gfx_pc.c

@@ -285,6 +285,12 @@ static bool gfx_texture_cache_lookup(int tile, struct TextureHashmapNode **n, co
     return false;
 }
 
+static void import_texture_rgba32(int tile) {
+    uint32_t width = rdp.texture_tile.line_size_bytes / 2;
+    uint32_t height = (rdp.loaded_texture[tile].size_bytes / 2) / rdp.texture_tile.line_size_bytes;
+    gfx_rapi->upload_texture(rdp.loaded_texture[tile].addr, width, height);
+}
+
 static void import_texture_rgba16(int tile) {
     uint8_t rgba32_buf[8192];
     
@@ -371,6 +377,41 @@ static void import_texture_ia16(int tile) {
     gfx_rapi->upload_texture(rgba32_buf, width, height);
 }
 
+static void import_texture_i4(int tile) {
+    uint8_t rgba32_buf[32768];
+    
+    for (uint32_t i = 0; i < rdp.loaded_texture[tile].size_bytes * 2; i++) {
+        uint8_t byte = rdp.loaded_texture[tile].addr[i / 2];
+        uint8_t intensity = (byte >> (4 - (i % 2) * 4)) & 0xf;
+        rgba32_buf[4*i + 0] = SCALE_4_8(intensity);
+        rgba32_buf[4*i + 1] = SCALE_4_8(intensity);
+        rgba32_buf[4*i + 2] = SCALE_4_8(intensity);
+        rgba32_buf[4*i + 3] = 255;
+    }
+    
+    uint32_t width = rdp.texture_tile.line_size_bytes * 2;
+    uint32_t height = rdp.loaded_texture[tile].size_bytes / rdp.texture_tile.line_size_bytes;
+    
+    gfx_rapi->upload_texture(rgba32_buf, width, height);
+}
+
+static void import_texture_i8(int tile) {
+    uint8_t rgba32_buf[16384];
+
+    for (uint32_t i = 0; i < rdp.loaded_texture[tile].size_bytes; i++) {
+        uint8_t intensity = rdp.loaded_texture[tile].addr[i];
+        rgba32_buf[4*i + 0] = intensity;
+        rgba32_buf[4*i + 1] = intensity;
+        rgba32_buf[4*i + 2] = intensity;
+        rgba32_buf[4*i + 3] = 255;
+    }
+    
+    uint32_t width = rdp.texture_tile.line_size_bytes;
+    uint32_t height = rdp.loaded_texture[tile].size_bytes / rdp.texture_tile.line_size_bytes;
+    
+    gfx_rapi->upload_texture(rgba32_buf, width, height);
+}
+
 static void import_texture_ci4(int tile) {
     uint8_t rgba32_buf[32768];
     
@@ -426,7 +467,10 @@ static void import_texture(int tile) {
     
     int t0 = get_time();
     if (fmt == G_IM_FMT_RGBA) {
-        if (siz == G_IM_SIZ_16b) {
+        if (siz == G_IM_SIZ_32b) {
+            import_texture_rgba32(tile);
+        }
+        else if (siz == G_IM_SIZ_16b) {
             import_texture_rgba16(tile);
         } else {
             abort();
@@ -449,6 +493,14 @@ static void import_texture(int tile) {
         } else {
             abort();
         }
+    } else if (fmt == G_IM_FMT_I) {
+        if (siz == G_IM_SIZ_4b) {
+            import_texture_i4(tile);
+        } else if (siz == G_IM_SIZ_8b) {
+            import_texture_i8(tile);
+        } else {
+            abort();
+        }
     } else {
         abort();
     }
@@ -976,7 +1028,6 @@ static void gfx_dp_set_texture_image(uint32_t format, uint32_t size, uint32_t wi
 }
 
 static void gfx_dp_set_tile(uint8_t fmt, uint32_t siz, uint32_t line, uint32_t tmem, uint8_t tile, uint32_t palette, uint32_t cmt, uint32_t maskt, uint32_t shiftt, uint32_t cms, uint32_t masks, uint32_t shifts) {
-    SUPPORT_CHECK(siz != G_IM_SIZ_32b);
     
     if (tile == G_TX_RENDERTILE) {
         SUPPORT_CHECK(palette == 0); // palette should set upper 4 bits of color index in 4b mode
@@ -1035,12 +1086,45 @@ static void gfx_dp_load_block(uint8_t tile, uint32_t uls, uint32_t ult, uint32_t
     }
     uint32_t size_bytes = (lrs + 1) << word_size_shift;
     rdp.loaded_texture[rdp.texture_to_load.tile_number].size_bytes = size_bytes;
-    assert(size_bytes <= 4096 && "bug: too big texture");
     rdp.loaded_texture[rdp.texture_to_load.tile_number].addr = rdp.texture_to_load.addr;
     
     rdp.textures_changed[rdp.texture_to_load.tile_number] = true;
 }
 
+static void gfx_dp_load_tile(uint8_t tile, uint32_t uls, uint32_t ult, uint32_t lrs, uint32_t lrt) {
+    if (tile == 1) return;
+    SUPPORT_CHECK(tile == G_TX_LOADTILE);
+    SUPPORT_CHECK(uls == 0);
+    SUPPORT_CHECK(ult == 0);
+
+    uint32_t word_size_shift;
+    switch (rdp.texture_to_load.siz) {
+        case G_IM_SIZ_4b:
+            word_size_shift = 0; // Or -1? It's unused in SM64 anyway.
+            break;
+        case G_IM_SIZ_8b:
+            word_size_shift = 0;
+            break;
+        case G_IM_SIZ_16b:
+            word_size_shift = 1;
+            break;
+        case G_IM_SIZ_32b:
+            word_size_shift = 2;
+            break;
+    }
+
+    uint32_t size_bytes = (((lrs >> G_TEXTURE_IMAGE_FRAC) + 1) * ((lrt >> G_TEXTURE_IMAGE_FRAC) + 1)) << word_size_shift;
+    rdp.loaded_texture[rdp.texture_to_load.tile_number].size_bytes = size_bytes;
+
+    rdp.loaded_texture[rdp.texture_to_load.tile_number].addr = rdp.texture_to_load.addr;
+    rdp.texture_tile.uls = uls;
+    rdp.texture_tile.ult = ult;
+    rdp.texture_tile.lrs = lrs;
+    rdp.texture_tile.lrt = lrt;
+
+    rdp.textures_changed[rdp.texture_to_load.tile_number] = true;
+}
+
 static uint8_t color_comb_component(uint32_t v) {
     switch (v) {
         case G_CCMUX_TEXEL0:
@@ -1384,6 +1468,9 @@ static void gfx_run_dl(Gfx* cmd) {
             case G_LOADBLOCK:
                 gfx_dp_load_block(C1(24, 3), C0(12, 12), C0(0, 12), C1(12, 12), C1(0, 12));
                 break;
+            case G_LOADTILE:
+                gfx_dp_load_tile(C1(24, 3), C0(12, 12), C0(0, 12), C1(12, 12), C1(0, 12));
+                break;
             case G_SETTILE:
                 gfx_dp_set_tile(C0(21, 3), C0(19, 2), C0(9, 9), C0(0, 9), C1(24, 3), C1(20, 4), C1(18, 2), C1(14, 4), C1(10, 4), C1(8, 2), C1(4, 4), C1(0, 4));
                 break;