From bab21e8cb3df9c06e3c0a37a8fc68fed676f5d6e Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Thu, 11 Apr 2019 17:14:55 -0300
Subject: gl_texture_cache: Initial implementation

---
 src/video_core/texture_cache.cpp | 37 ++++++++++++++++++++++++++++---------
 1 file changed, 28 insertions(+), 9 deletions(-)

(limited to 'src/video_core/texture_cache.cpp')

diff --git a/src/video_core/texture_cache.cpp b/src/video_core/texture_cache.cpp
index e96eba7cc..c42365a82 100644
--- a/src/video_core/texture_cache.cpp
+++ b/src/video_core/texture_cache.cpp
@@ -163,7 +163,7 @@ u32 SurfaceParams::GetMipBlockHeight(u32 level) const {
         return block_height;
     }
     const u32 height{GetMipHeight(level)};
-    const u32 default_block_height{GetDefaultBlockHeight(pixel_format)};
+    const u32 default_block_height{GetDefaultBlockHeight()};
     const u32 blocks_in_y{(height + default_block_height - 1) / default_block_height};
     u32 block_height = 16;
     while (block_height > 1 && blocks_in_y <= block_height * 4) {
@@ -205,6 +205,10 @@ std::size_t SurfaceParams::GetHostMipmapLevelOffset(u32 level) const {
     return offset;
 }
 
+std::size_t SurfaceParams::GetHostMipmapSize(u32 level) const {
+    return GetInnerMipmapMemorySize(level, true, true, false) * GetNumLayers();
+}
+
 std::size_t SurfaceParams::GetGuestLayerSize() const {
     return GetInnerMemorySize(false, true, false);
 }
@@ -213,6 +217,22 @@ std::size_t SurfaceParams::GetHostLayerSize(u32 level) const {
     return GetInnerMipmapMemorySize(level, true, IsLayered(), false);
 }
 
+u32 SurfaceParams::GetDefaultBlockWidth() const {
+    return VideoCore::Surface::GetDefaultBlockWidth(pixel_format);
+}
+
+u32 SurfaceParams::GetDefaultBlockHeight() const {
+    return VideoCore::Surface::GetDefaultBlockHeight(pixel_format);
+}
+
+u32 SurfaceParams::GetBitsPerPixel() const {
+    return VideoCore::Surface::GetFormatBpp(pixel_format);
+}
+
+u32 SurfaceParams::GetBytesPerPixel() const {
+    return VideoCore::Surface::GetBytesPerPixel(pixel_format);
+}
+
 bool SurfaceParams::IsFamiliar(const SurfaceParams& view_params) const {
     if (std::tie(is_tiled, tile_width_spacing, pixel_format, component_type, type) !=
         std::tie(view_params.is_tiled, view_params.tile_width_spacing, view_params.pixel_format,
@@ -257,7 +277,7 @@ void SurfaceParams::CalculateCachedValues() {
 
     // ASTC is uncompressed in software, in emulated as RGBA8
     if (IsPixelFormatASTC(pixel_format)) {
-        host_size_in_bytes = width * height * depth * 4;
+        host_size_in_bytes = static_cast<std::size_t>(width * height * depth) * 4ULL;
     } else {
         host_size_in_bytes = GetInnerMemorySize(true, false, false);
     }
@@ -282,13 +302,11 @@ void SurfaceParams::CalculateCachedValues() {
 std::size_t SurfaceParams::GetInnerMipmapMemorySize(u32 level, bool as_host_size, bool layer_only,
                                                     bool uncompressed) const {
     const bool tiled{as_host_size ? false : is_tiled};
-    const u32 tile_x{GetDefaultBlockWidth(pixel_format)};
-    const u32 tile_y{GetDefaultBlockHeight(pixel_format)};
-    const u32 width{GetMipmapSize(uncompressed, GetMipWidth(level), tile_x)};
-    const u32 height{GetMipmapSize(uncompressed, GetMipHeight(level), tile_y)};
+    const u32 width{GetMipmapSize(uncompressed, GetMipWidth(level), GetDefaultBlockWidth())};
+    const u32 height{GetMipmapSize(uncompressed, GetMipHeight(level), GetDefaultBlockHeight())};
     const u32 depth{layer_only ? 1U : GetMipDepth(level)};
-    return Tegra::Texture::CalculateSize(tiled, GetBytesPerPixel(pixel_format), width, height,
-                                         depth, GetMipBlockHeight(level), GetMipBlockDepth(level));
+    return Tegra::Texture::CalculateSize(tiled, GetBytesPerPixel(), width, height, depth,
+                                         GetMipBlockHeight(level), GetMipBlockDepth(level));
 }
 
 std::size_t SurfaceParams::GetInnerMemorySize(bool as_host_size, bool layer_only,
@@ -297,7 +315,7 @@ std::size_t SurfaceParams::GetInnerMemorySize(bool as_host_size, bool layer_only
     for (u32 level = 0; level < num_levels; ++level) {
         size += GetInnerMipmapMemorySize(level, as_host_size, layer_only, uncompressed);
     }
-    if (!as_host_size && is_tiled) {
+    if (is_tiled && !as_host_size) {
         size = Common::AlignUp(size, Tegra::Texture::GetGOBSize() * block_height * block_depth);
     }
     return size;
@@ -309,6 +327,7 @@ std::map<u64, std::pair<u32, u32>> SurfaceParams::CreateViewOffsetMap() const {
     case SurfaceTarget::Texture1D:
     case SurfaceTarget::Texture2D:
     case SurfaceTarget::Texture3D: {
+        // TODO(Rodrigo): Add layer iterations for 3D textures
         constexpr u32 layer = 0;
         for (u32 level = 0; level < num_levels; ++level) {
             const std::size_t offset{GetGuestMipmapLevelOffset(level)};
-- 
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