From bcde71d4d93abb40539058e683fd39dd8ad39760 Mon Sep 17 00:00:00 2001
From: bunnei <bunneidev@gmail.com>
Date: Wed, 17 Oct 2018 21:26:40 -0400
Subject: [PATCH] decoders: Introduce functions for un/swizzling subrects.
---
src/video_core/textures/decoders.cpp | 40 ++++++++++++++++++++++++++++
src/video_core/textures/decoders.h | 9 +++++++
2 files changed, 49 insertions(+)
diff --git a/src/video_core/textures/decoders.cpp b/src/video_core/textures/decoders.cpp
index 18ab723f73..f1b40e7f55 100644
--- a/src/video_core/textures/decoders.cpp
+++ b/src/video_core/textures/decoders.cpp
@@ -237,6 +237,46 @@ std::vector<u8> UnswizzleTexture(VAddr address, u32 tile_size, u32 bytes_per_pix
return unswizzled_data;
}
+void SwizzleSubrect(u32 subrect_width, u32 subrect_height, u32 source_pitch, u32 swizzled_width,
+ u32 bytes_per_pixel, VAddr swizzled_data, VAddr unswizzled_data,
+ u32 block_height) {
+ const u32 image_width_in_gobs{(swizzled_width * bytes_per_pixel + 63) / 64};
+ for (u32 line = 0; line < subrect_height; ++line) {
+ const u32 gob_address_y =
+ (line / (8 * block_height)) * 512 * block_height * image_width_in_gobs +
+ (line % (8 * block_height) / 8) * 512;
+ const auto& table = legacy_swizzle_table[line % 8];
+ for (u32 x = 0; x < subrect_width; ++x) {
+ const u32 gob_address = gob_address_y + (x * bytes_per_pixel / 64) * 512 * block_height;
+ const u32 swizzled_offset = gob_address + table[(x * bytes_per_pixel) % 64];
+ const VAddr source_line = unswizzled_data + line * source_pitch + x * bytes_per_pixel;
+ const VAddr dest_addr = swizzled_data + swizzled_offset;
+
+ Memory::CopyBlock(dest_addr, source_line, bytes_per_pixel);
+ }
+ }
+}
+
+void UnswizzleSubrect(u32 subrect_width, u32 subrect_height, u32 dest_pitch, u32 swizzled_width,
+ u32 bytes_per_pixel, VAddr swizzled_data, VAddr unswizzled_data,
+ u32 block_height, u32 offset_x, u32 offset_y) {
+ for (u32 line = 0; line < subrect_height; ++line) {
+ const u32 y2 = line + offset_y;
+ const u32 gob_address_y =
+ (y2 / (8 * block_height)) * 512 * block_height + (y2 % (8 * block_height) / 8) * 512;
+ const auto& table = legacy_swizzle_table[y2 % 8];
+ for (u32 x = 0; x < subrect_width; ++x) {
+ const u32 x2 = (x + offset_x) * bytes_per_pixel;
+ const u32 gob_address = gob_address_y + (x2 / 64) * 512 * block_height;
+ const u32 swizzled_offset = gob_address + table[x2 % 64];
+ const VAddr dest_line = unswizzled_data + line * dest_pitch + x * bytes_per_pixel;
+ const VAddr source_addr = swizzled_data + swizzled_offset;
+
+ Memory::CopyBlock(dest_line, source_addr, bytes_per_pixel);
+ }
+ }
+}
+
std::vector<u8> DecodeTexture(const std::vector<u8>& texture_data, TextureFormat format, u32 width,
u32 height) {
std::vector<u8> rgba_data;
diff --git a/src/video_core/textures/decoders.h b/src/video_core/textures/decoders.h
index aaf316947e..4726f54a5e 100644
--- a/src/video_core/textures/decoders.h
+++ b/src/video_core/textures/decoders.h
@@ -35,4 +35,13 @@ std::vector<u8> DecodeTexture(const std::vector<u8>& texture_data, TextureFormat
std::size_t CalculateSize(bool tiled, u32 bytes_per_pixel, u32 width, u32 height, u32 depth,
u32 block_height, u32 block_depth);
+/// Copies an untiled subrectangle into a tiled surface.
+void SwizzleSubrect(u32 subrect_width, u32 subrect_height, u32 source_pitch, u32 swizzled_width,
+ u32 bytes_per_pixel, VAddr swizzled_data, VAddr unswizzled_data,
+ u32 block_height);
+/// Copies a tiled subrectangle into a linear surface.
+void UnswizzleSubrect(u32 subrect_width, u32 subrect_height, u32 dest_pitch, u32 swizzled_width,
+ u32 bytes_per_pixel, VAddr swizzled_data, VAddr unswizzled_data,
+ u32 block_height, u32 offset_x, u32 offset_y);
+
} // namespace Tegra::Texture