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-rw-r--r--src/video_core/CMakeLists.txt36
-rw-r--r--src/video_core/debug_utils/debug_utils.cpp256
-rw-r--r--src/video_core/debug_utils/debug_utils.h25
-rw-r--r--src/video_core/pica.h5
-rw-r--r--src/video_core/rasterizer.cpp5
-rw-r--r--src/video_core/renderer_opengl/gl_rasterizer.cpp2
-rw-r--r--src/video_core/renderer_opengl/gl_rasterizer_cache.cpp15
-rw-r--r--src/video_core/shader/shader_jit_x64_compiler.cpp9
-rw-r--r--src/video_core/shader/shader_jit_x64_compiler.h1
-rw-r--r--src/video_core/texture/etc1.cpp124
-rw-r--r--src/video_core/texture/etc1.h16
-rw-r--r--src/video_core/texture/texture_decode.cpp229
-rw-r--r--src/video_core/texture/texture_decode.h60
13 files changed, 473 insertions, 310 deletions
diff --git a/src/video_core/CMakeLists.txt b/src/video_core/CMakeLists.txt
index d55b84ce0..ad984cd94 100644
--- a/src/video_core/CMakeLists.txt
+++ b/src/video_core/CMakeLists.txt
@@ -1,36 +1,30 @@
set(SRCS
- renderer_opengl/gl_rasterizer.cpp
- renderer_opengl/gl_rasterizer_cache.cpp
- renderer_opengl/gl_shader_gen.cpp
- renderer_opengl/gl_shader_util.cpp
- renderer_opengl/gl_state.cpp
- renderer_opengl/renderer_opengl.cpp
- debug_utils/debug_utils.cpp
clipper.cpp
command_processor.cpp
+ debug_utils/debug_utils.cpp
pica.cpp
primitive_assembly.cpp
rasterizer.cpp
renderer_base.cpp
+ renderer_opengl/gl_rasterizer.cpp
+ renderer_opengl/gl_rasterizer_cache.cpp
+ renderer_opengl/gl_shader_gen.cpp
+ renderer_opengl/gl_shader_util.cpp
+ renderer_opengl/gl_state.cpp
+ renderer_opengl/renderer_opengl.cpp
shader/shader.cpp
shader/shader_interpreter.cpp
swrasterizer.cpp
+ texture/etc1.cpp
+ texture/texture_decode.cpp
vertex_loader.cpp
video_core.cpp
)
set(HEADERS
- debug_utils/debug_utils.h
- renderer_opengl/gl_rasterizer.h
- renderer_opengl/gl_rasterizer_cache.h
- renderer_opengl/gl_resource_manager.h
- renderer_opengl/gl_shader_gen.h
- renderer_opengl/gl_shader_util.h
- renderer_opengl/gl_state.h
- renderer_opengl/pica_to_gl.h
- renderer_opengl/renderer_opengl.h
clipper.h
command_processor.h
+ debug_utils/debug_utils.h
gpu_debugger.h
pica.h
pica_state.h
@@ -39,10 +33,20 @@ set(HEADERS
rasterizer.h
rasterizer_interface.h
renderer_base.h
+ renderer_opengl/gl_rasterizer.h
+ renderer_opengl/gl_rasterizer_cache.h
+ renderer_opengl/gl_resource_manager.h
+ renderer_opengl/gl_shader_gen.h
+ renderer_opengl/gl_shader_util.h
+ renderer_opengl/gl_state.h
+ renderer_opengl/pica_to_gl.h
+ renderer_opengl/renderer_opengl.h
shader/debug_data.h
shader/shader.h
shader/shader_interpreter.h
swrasterizer.h
+ texture/etc1.h
+ texture/texture_decode.h
utils.h
vertex_loader.h
video_core.h
diff --git a/src/video_core/debug_utils/debug_utils.cpp b/src/video_core/debug_utils/debug_utils.cpp
index c44b3d95a..2d40f7d4f 100644
--- a/src/video_core/debug_utils/debug_utils.cpp
+++ b/src/video_core/debug_utils/debug_utils.cpp
@@ -35,6 +35,7 @@
#include "video_core/rasterizer_interface.h"
#include "video_core/renderer_base.h"
#include "video_core/shader/shader.h"
+#include "video_core/texture/texture_decode.h"
#include "video_core/utils.h"
#include "video_core/video_core.h"
@@ -315,257 +316,6 @@ std::unique_ptr<PicaTrace> FinishPicaTracing() {
return ret;
}
-const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const TextureInfo& info,
- bool disable_alpha) {
- const unsigned int coarse_x = x & ~7;
- const unsigned int coarse_y = y & ~7;
-
- if (info.format != Regs::TextureFormat::ETC1 && info.format != Regs::TextureFormat::ETC1A4) {
- // TODO(neobrain): Fix code design to unify vertical block offsets!
- source += coarse_y * info.stride;
- }
-
- // TODO: Assert that width/height are multiples of block dimensions
-
- switch (info.format) {
- case Regs::TextureFormat::RGBA8: {
- auto res = Color::DecodeRGBA8(source + VideoCore::GetMortonOffset(x, y, 4));
- return {res.r(), res.g(), res.b(), static_cast<u8>(disable_alpha ? 255 : res.a())};
- }
-
- case Regs::TextureFormat::RGB8: {
- auto res = Color::DecodeRGB8(source + VideoCore::GetMortonOffset(x, y, 3));
- return {res.r(), res.g(), res.b(), 255};
- }
-
- case Regs::TextureFormat::RGB5A1: {
- auto res = Color::DecodeRGB5A1(source + VideoCore::GetMortonOffset(x, y, 2));
- return {res.r(), res.g(), res.b(), static_cast<u8>(disable_alpha ? 255 : res.a())};
- }
-
- case Regs::TextureFormat::RGB565: {
- auto res = Color::DecodeRGB565(source + VideoCore::GetMortonOffset(x, y, 2));
- return {res.r(), res.g(), res.b(), 255};
- }
-
- case Regs::TextureFormat::RGBA4: {
- auto res = Color::DecodeRGBA4(source + VideoCore::GetMortonOffset(x, y, 2));
- return {res.r(), res.g(), res.b(), static_cast<u8>(disable_alpha ? 255 : res.a())};
- }
-
- case Regs::TextureFormat::IA8: {
- const u8* source_ptr = source + VideoCore::GetMortonOffset(x, y, 2);
-
- if (disable_alpha) {
- // Show intensity as red, alpha as green
- return {source_ptr[1], source_ptr[0], 0, 255};
- } else {
- return {source_ptr[1], source_ptr[1], source_ptr[1], source_ptr[0]};
- }
- }
-
- case Regs::TextureFormat::RG8: {
- auto res = Color::DecodeRG8(source + VideoCore::GetMortonOffset(x, y, 2));
- return {res.r(), res.g(), 0, 255};
- }
-
- case Regs::TextureFormat::I8: {
- const u8* source_ptr = source + VideoCore::GetMortonOffset(x, y, 1);
- return {*source_ptr, *source_ptr, *source_ptr, 255};
- }
-
- case Regs::TextureFormat::A8: {
- const u8* source_ptr = source + VideoCore::GetMortonOffset(x, y, 1);
-
- if (disable_alpha) {
- return {*source_ptr, *source_ptr, *source_ptr, 255};
- } else {
- return {0, 0, 0, *source_ptr};
- }
- }
-
- case Regs::TextureFormat::IA4: {
- const u8* source_ptr = source + VideoCore::GetMortonOffset(x, y, 1);
-
- u8 i = Color::Convert4To8(((*source_ptr) & 0xF0) >> 4);
- u8 a = Color::Convert4To8((*source_ptr) & 0xF);
-
- if (disable_alpha) {
- // Show intensity as red, alpha as green
- return {i, a, 0, 255};
- } else {
- return {i, i, i, a};
- }
- }
-
- case Regs::TextureFormat::I4: {
- u32 morton_offset = VideoCore::GetMortonOffset(x, y, 1);
- const u8* source_ptr = source + morton_offset / 2;
-
- u8 i = (morton_offset % 2) ? ((*source_ptr & 0xF0) >> 4) : (*source_ptr & 0xF);
- i = Color::Convert4To8(i);
-
- return {i, i, i, 255};
- }
-
- case Regs::TextureFormat::A4: {
- u32 morton_offset = VideoCore::GetMortonOffset(x, y, 1);
- const u8* source_ptr = source + morton_offset / 2;
-
- u8 a = (morton_offset % 2) ? ((*source_ptr & 0xF0) >> 4) : (*source_ptr & 0xF);
- a = Color::Convert4To8(a);
-
- if (disable_alpha) {
- return {a, a, a, 255};
- } else {
- return {0, 0, 0, a};
- }
- }
-
- case Regs::TextureFormat::ETC1:
- case Regs::TextureFormat::ETC1A4: {
- bool has_alpha = (info.format == Regs::TextureFormat::ETC1A4);
-
- // ETC1 further subdivides each 8x8 tile into four 4x4 subtiles
- const int subtile_width = 4;
- const int subtile_height = 4;
-
- int subtile_index = ((x / subtile_width) & 1) + 2 * ((y / subtile_height) & 1);
- unsigned subtile_bytes = has_alpha ? 2 : 1; // TODO: Name...
-
- const u64* source_ptr = (const u64*)(source + coarse_x * subtile_bytes * 4 +
- coarse_y * subtile_bytes * 4 * (info.width / 8) +
- subtile_index * subtile_bytes * 8);
- u64 alpha = 0xFFFFFFFFFFFFFFFF;
- if (has_alpha) {
- alpha = *source_ptr;
- source_ptr++;
- }
-
- union ETC1Tile {
- // Each of these two is a collection of 16 bits (one per lookup value)
- BitField<0, 16, u64> table_subindexes;
- BitField<16, 16, u64> negation_flags;
-
- unsigned GetTableSubIndex(unsigned index) const {
- return (table_subindexes >> index) & 1;
- }
-
- bool GetNegationFlag(unsigned index) const {
- return ((negation_flags >> index) & 1) == 1;
- }
-
- BitField<32, 1, u64> flip;
- BitField<33, 1, u64> differential_mode;
-
- BitField<34, 3, u64> table_index_2;
- BitField<37, 3, u64> table_index_1;
-
- union {
- // delta value + base value
- BitField<40, 3, s64> db;
- BitField<43, 5, u64> b;
-
- BitField<48, 3, s64> dg;
- BitField<51, 5, u64> g;
-
- BitField<56, 3, s64> dr;
- BitField<59, 5, u64> r;
- } differential;
-
- union {
- BitField<40, 4, u64> b2;
- BitField<44, 4, u64> b1;
-
- BitField<48, 4, u64> g2;
- BitField<52, 4, u64> g1;
-
- BitField<56, 4, u64> r2;
- BitField<60, 4, u64> r1;
- } separate;
-
- const Math::Vec3<u8> GetRGB(int x, int y) const {
- int texel = 4 * x + y;
-
- if (flip)
- std::swap(x, y);
-
- // Lookup base value
- Math::Vec3<int> ret;
- if (differential_mode) {
- ret.r() = static_cast<int>(differential.r);
- ret.g() = static_cast<int>(differential.g);
- ret.b() = static_cast<int>(differential.b);
- if (x >= 2) {
- ret.r() += static_cast<int>(differential.dr);
- ret.g() += static_cast<int>(differential.dg);
- ret.b() += static_cast<int>(differential.db);
- }
- ret.r() = Color::Convert5To8(ret.r());
- ret.g() = Color::Convert5To8(ret.g());
- ret.b() = Color::Convert5To8(ret.b());
- } else {
- if (x < 2) {
- ret.r() = Color::Convert4To8(static_cast<u8>(separate.r1));
- ret.g() = Color::Convert4To8(static_cast<u8>(separate.g1));
- ret.b() = Color::Convert4To8(static_cast<u8>(separate.b1));
- } else {
- ret.r() = Color::Convert4To8(static_cast<u8>(separate.r2));
- ret.g() = Color::Convert4To8(static_cast<u8>(separate.g2));
- ret.b() = Color::Convert4To8(static_cast<u8>(separate.b2));
- }
- }
-
- // Add modifier
- unsigned table_index =
- static_cast<int>((x < 2) ? table_index_1.Value() : table_index_2.Value());
-
- static const std::array<std::array<u8, 2>, 8> etc1_modifier_table = {{
- {{2, 8}},
- {{5, 17}},
- {{9, 29}},
- {{13, 42}},
- {{18, 60}},
- {{24, 80}},
- {{33, 106}},
- {{47, 183}},
- }};
-
- int modifier = etc1_modifier_table.at(table_index).at(GetTableSubIndex(texel));
- if (GetNegationFlag(texel))
- modifier *= -1;
-
- ret.r() = MathUtil::Clamp(ret.r() + modifier, 0, 255);
- ret.g() = MathUtil::Clamp(ret.g() + modifier, 0, 255);
- ret.b() = MathUtil::Clamp(ret.b() + modifier, 0, 255);
-
- return ret.Cast<u8>();
- }
- } const* etc1_tile = reinterpret_cast<const ETC1Tile*>(source_ptr);
-
- alpha >>= 4 * ((x & 3) * 4 + (y & 3));
- return Math::MakeVec(etc1_tile->GetRGB(x & 3, y & 3),
- disable_alpha ? (u8)255 : Color::Convert4To8(alpha & 0xF));
- }
-
- default:
- LOG_ERROR(HW_GPU, "Unknown texture format: %x", (u32)info.format);
- DEBUG_ASSERT(false);
- return {};
- }
-}
-
-TextureInfo TextureInfo::FromPicaRegister(const Regs::TextureConfig& config,
- const Regs::TextureFormat& format) {
- TextureInfo info;
- info.physical_address = config.GetPhysicalAddress();
- info.width = config.width;
- info.height = config.height;
- info.format = format;
- info.stride = Pica::Regs::NibblesPerPixel(info.format) * info.width / 2;
- return info;
-}
-
#ifdef HAVE_PNG
// Adapter functions to libpng to write/flush to File::IOFile instances.
static void WriteIOFile(png_structp png_ptr, png_bytep data, png_size_t length) {
@@ -642,12 +392,12 @@ void DumpTexture(const Pica::Regs::TextureConfig& texture_config, u8* data) {
buf = new u8[row_stride * texture_config.height];
for (unsigned y = 0; y < texture_config.height; ++y) {
for (unsigned x = 0; x < texture_config.width; ++x) {
- TextureInfo info;
+ Pica::Texture::TextureInfo info;
info.width = texture_config.width;
info.height = texture_config.height;
info.stride = row_stride;
info.format = g_state.regs.texture0_format;
- Math::Vec4<u8> texture_color = LookupTexture(data, x, y, info);
+ Math::Vec4<u8> texture_color = Pica::Texture::LookupTexture(data, x, y, info);
buf[3 * x + y * row_stride] = texture_color.r();
buf[3 * x + y * row_stride + 1] = texture_color.g();
buf[3 * x + y * row_stride + 2] = texture_color.b();
diff --git a/src/video_core/debug_utils/debug_utils.h b/src/video_core/debug_utils/debug_utils.h
index 46ea8d9c7..938a2e1b5 100644
--- a/src/video_core/debug_utils/debug_utils.h
+++ b/src/video_core/debug_utils/debug_utils.h
@@ -205,31 +205,6 @@ inline bool IsPicaTracing() {
void OnPicaRegWrite(PicaTrace::Write write);
std::unique_ptr<PicaTrace> FinishPicaTracing();
-struct TextureInfo {
- PAddr physical_address;
- int width;
- int height;
- int stride;
- Pica::Regs::TextureFormat format;
-
- static TextureInfo FromPicaRegister(const Pica::Regs::TextureConfig& config,
- const Pica::Regs::TextureFormat& format);
-};
-
-/**
- * Lookup texel located at the given coordinates and return an RGBA vector of its color.
- * @param source Source pointer to read data from
- * @param s,t Texture coordinates to read from
- * @param info TextureInfo object describing the texture setup
- * @param disable_alpha This is used for debug widgets which use this method to display textures
- * without providing a good way to visualize alpha by themselves. If true, this will return 255 for
- * the alpha component, and either drop the information entirely or store it in an "unused" color
- * channel.
- * @todo Eventually we should get rid of the disable_alpha parameter.
- */
-const Math::Vec4<u8> LookupTexture(const u8* source, int s, int t, const TextureInfo& info,
- bool disable_alpha = false);
-
void DumpTexture(const Pica::Regs::TextureConfig& texture_config, u8* data);
std::string GetTevStageConfigColorCombinerString(const Pica::Regs::TevStageConfig& tev_stage);
diff --git a/src/video_core/pica.h b/src/video_core/pica.h
index e326f7727..731540b99 100644
--- a/src/video_core/pica.h
+++ b/src/video_core/pica.h
@@ -276,8 +276,11 @@ struct Regs {
case TextureFormat::I8:
case TextureFormat::A8:
case TextureFormat::IA4:
- default: // placeholder for yet unknown formats
return 2;
+
+ default: // placeholder for yet unknown formats
+ UNIMPLEMENTED();
+ return 0;
}
}
diff --git a/src/video_core/rasterizer.cpp b/src/video_core/rasterizer.cpp
index 0674eb85e..287d732b5 100644
--- a/src/video_core/rasterizer.cpp
+++ b/src/video_core/rasterizer.cpp
@@ -21,6 +21,7 @@
#include "video_core/pica_types.h"
#include "video_core/rasterizer.h"
#include "video_core/shader/shader.h"
+#include "video_core/texture/texture_decode.h"
#include "video_core/utils.h"
namespace Pica {
@@ -579,10 +580,10 @@ static void ProcessTriangleInternal(const Vertex& v0, const Vertex& v1, const Ve
u8* texture_data =
Memory::GetPhysicalPointer(texture.config.GetPhysicalAddress());
auto info =
- DebugUtils::TextureInfo::FromPicaRegister(texture.config, texture.format);
+ Texture::TextureInfo::FromPicaRegister(texture.config, texture.format);
// TODO: Apply the min and mag filters to the texture
- texture_color[i] = DebugUtils::LookupTexture(texture_data, s, t, info);
+ texture_color[i] = Texture::LookupTexture(texture_data, s, t, info);
#if PICA_DUMP_TEXTURES
DebugUtils::DumpTexture(texture.config, texture_data);
#endif
diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp
index 9dd9ae0fb..071e4ace0 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp
@@ -716,8 +716,6 @@ void RasterizerOpenGL::FlushAndInvalidateRegion(PAddr addr, u32 size) {
bool RasterizerOpenGL::AccelerateDisplayTransfer(const GPU::Regs::DisplayTransferConfig& config) {
MICROPROFILE_SCOPE(OpenGL_Blits);
- using PixelFormat = CachedSurface::PixelFormat;
- using SurfaceType = CachedSurface::SurfaceType;
CachedSurface src_params;
src_params.addr = config.GetPhysicalInputAddress();
diff --git a/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp b/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
index ef3b06a7b..60380257a 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
@@ -17,10 +17,10 @@
#include "common/vector_math.h"
#include "core/frontend/emu_window.h"
#include "core/memory.h"
-#include "video_core/debug_utils/debug_utils.h"
#include "video_core/pica_state.h"
#include "video_core/renderer_opengl/gl_rasterizer_cache.h"
#include "video_core/renderer_opengl/gl_state.h"
+#include "video_core/texture/texture_decode.h"
#include "video_core/utils.h"
#include "video_core/video_core.h"
@@ -172,7 +172,6 @@ bool RasterizerCacheOpenGL::TryBlitSurfaces(CachedSurface* src_surface,
const MathUtil::Rectangle<int>& src_rect,
CachedSurface* dst_surface,
const MathUtil::Rectangle<int>& dst_rect) {
- using SurfaceType = CachedSurface::SurfaceType;
if (!CachedSurface::CheckFormatsBlittable(src_surface->pixel_format,
dst_surface->pixel_format)) {
@@ -340,17 +339,16 @@ CachedSurface* RasterizerCacheOpenGL::GetSurface(const CachedSurface& params, bo
std::vector<Math::Vec4<u8>> tex_buffer(params.width * params.height);
- Pica::DebugUtils::TextureInfo tex_info;
+ Pica::Texture::TextureInfo tex_info;
tex_info.width = params.width;
tex_info.height = params.height;
- tex_info.stride =
- params.width * CachedSurface::GetFormatBpp(params.pixel_format) / 8;
tex_info.format = (Pica::Regs::TextureFormat)params.pixel_format;
+ tex_info.SetDefaultStride();
tex_info.physical_address = params.addr;
for (unsigned y = 0; y < params.height; ++y) {
for (unsigned x = 0; x < params.width; ++x) {
- tex_buffer[x + params.width * y] = Pica::DebugUtils::LookupTexture(
+ tex_buffer[x + params.width * y] = Pica::Texture::LookupTexture(
texture_src_data, x, params.height - 1 - y, tex_info);
}
}
@@ -513,8 +511,9 @@ CachedSurface* RasterizerCacheOpenGL::GetSurfaceRect(const CachedSurface& params
CachedSurface* RasterizerCacheOpenGL::GetTextureSurface(
const Pica::Regs::FullTextureConfig& config) {
- Pica::DebugUtils::TextureInfo info =
- Pica::DebugUtils::TextureInfo::FromPicaRegister(config.config, config.format);
+
+ Pica::Texture::TextureInfo info =
+ Pica::Texture::TextureInfo::FromPicaRegister(config.config, config.format);
CachedSurface params;
params.addr = info.physical_address;
diff --git a/src/video_core/shader/shader_jit_x64_compiler.cpp b/src/video_core/shader/shader_jit_x64_compiler.cpp
index 49806e8c9..92b35dbc0 100644
--- a/src/video_core/shader/shader_jit_x64_compiler.cpp
+++ b/src/video_core/shader/shader_jit_x64_compiler.cpp
@@ -144,6 +144,8 @@ static const BitSet32 persistent_regs = BuildRegSet({
ADDROFFS_REG_0, ADDROFFS_REG_1, LOOPCOUNT_REG, COND0, COND1,
// Constants
ONE, NEGBIT,
+ // Loop variables
+ LOOPCOUNT, LOOPINC,
});
/// Raw constant for the source register selector that indicates no swizzling is performed
@@ -587,7 +589,7 @@ void JitShader::Compile_RSQ(Instruction instr) {
void JitShader::Compile_NOP(Instruction instr) {}
void JitShader::Compile_END(Instruction instr) {
- ABI_PopRegistersAndAdjustStack(*this, ABI_ALL_CALLEE_SAVED, 8);
+ ABI_PopRegistersAndAdjustStack(*this, ABI_ALL_CALLEE_SAVED, 8, 16);
ret();
}
@@ -839,7 +841,10 @@ void JitShader::Compile(const std::array<u32, 1024>* program_code_,
FindReturnOffsets();
// The stack pointer is 8 modulo 16 at the entry of a procedure
- ABI_PushRegistersAndAdjustStack(*this, ABI_ALL_CALLEE_SAVED, 8);
+ // We reserve 16 bytes and assign a dummy value to the first 8 bytes, to catch any potential
+ // return checks (see Compile_Return) that happen in shader main routine.
+ ABI_PushRegistersAndAdjustStack(*this, ABI_ALL_CALLEE_SAVED, 8, 16);
+ mov(qword[rsp + 8], 0xFFFFFFFFFFFFFFFFULL);
mov(SETUP, ABI_PARAM1);
mov(STATE, ABI_PARAM2);
diff --git a/src/video_core/shader/shader_jit_x64_compiler.h b/src/video_core/shader/shader_jit_x64_compiler.h
index 29e9875ea..599e43ffd 100644
--- a/src/video_core/shader/shader_jit_x64_compiler.h
+++ b/src/video_core/shader/shader_jit_x64_compiler.h
@@ -12,7 +12,6 @@
#include <xbyak.h>
#include "common/bit_set.h"
#include "common/common_types.h"
-#include "common/x64/emitter.h"
#include "video_core/shader/shader.h"
using nihstro::Instruction;
diff --git a/src/video_core/texture/etc1.cpp b/src/video_core/texture/etc1.cpp
new file mode 100644
index 000000000..af60cde1e
--- /dev/null
+++ b/src/video_core/texture/etc1.cpp
@@ -0,0 +1,124 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include "common/bit_field.h"
+#include "common/color.h"
+#include "common/common_types.h"
+#include "common/math_util.h"
+#include "common/vector_math.h"
+#include "video_core/texture/etc1.h"
+
+namespace Pica {
+namespace Texture {
+
+namespace {
+
+constexpr std::array<u8[2], 8> etc1_modifier_table = {{
+ {2, 8}, {5, 17}, {9, 29}, {13, 42}, {18, 60}, {24, 80}, {33, 106}, {47, 183},
+}};
+
+union ETC1Tile {
+ u64 raw;
+
+ // Each of these two is a collection of 16 bits (one per lookup value)
+ BitField<0, 16, u64> table_subindexes;
+ BitField<16, 16, u64> negation_flags;
+
+ unsigned GetTableSubIndex(unsigned index) const {
+ return (table_subindexes >> index) & 1;
+ }
+
+ bool GetNegationFlag(unsigned index) const {
+ return ((negation_flags >> index) & 1) == 1;
+ }
+
+ BitField<32, 1, u64> flip;
+ BitField<33, 1, u64> differential_mode;
+
+ BitField<34, 3, u64> table_index_2;
+ BitField<37, 3, u64> table_index_1;
+
+ union {
+ // delta value + base value
+ BitField<40, 3, s64> db;
+ BitField<43, 5, u64> b;
+
+ BitField<48, 3, s64> dg;
+ BitField<51, 5, u64> g;
+
+ BitField<56, 3, s64> dr;
+ BitField<59, 5, u64> r;
+ } differential;
+
+ union {
+ BitField<40, 4, u64> b2;
+ BitField<44, 4, u64> b1;
+
+ BitField<48, 4, u64> g2;
+ BitField<52, 4, u64> g1;
+
+ BitField<56, 4, u64> r2;
+ BitField<60, 4, u64> r1;
+ } separate;
+
+ const Math::Vec3<u8> GetRGB(unsigned int x, unsigned int y) const {
+ int texel = 4 * x + y;
+
+ if (flip)
+ std::swap(x, y);
+
+ // Lookup base value
+ Math::Vec3<int> ret;
+ if (differential_mode) {
+ ret.r() = static_cast<int>(differential.r);
+ ret.g() = static_cast<int>(differential.g);
+ ret.b() = static_cast<int>(differential.b);
+ if (x >= 2) {
+ ret.r() += static_cast<int>(differential.dr);
+ ret.g() += static_cast<int>(differential.dg);
+ ret.b() += static_cast<int>(differential.db);
+ }
+ ret.r() = Color::Convert5To8(ret.r());
+ ret.g() = Color::Convert5To8(ret.g());
+ ret.b() = Color::Convert5To8(ret.b());
+ } else {
+ if (x < 2) {
+ ret.r() = Color::Convert4To8(static_cast<u8>(separate.r1));
+ ret.g() = Color::Convert4To8(static_cast<u8>(separate.g1));
+ ret.b() = Color::Convert4To8(static_cast<u8>(separate.b1));
+ } else {
+ ret.r() = Color::Convert4To8(static_cast<u8>(separate.r2));
+ ret.g() = Color::Convert4To8(static_cast<u8>(separate.g2));
+ ret.b() = Color::Convert4To8(static_cast<u8>(separate.b2));
+ }
+ }
+
+ // Add modifier
+ unsigned table_index =
+ static_cast<int>((x < 2) ? table_index_1.Value() : table_index_2.Value());
+
+ int modifier = etc1_modifier_table[table_index][GetTableSubIndex(texel)];
+ if (GetNegationFlag(texel))
+ modifier *= -1;
+
+ ret.r() = MathUtil::Clamp(ret.r() + modifier, 0, 255);
+ ret.g() = MathUtil::Clamp(ret.g() + modifier, 0, 255);
+ ret.b() = MathUtil::Clamp(ret.b() + modifier, 0, 255);
+
+ return ret.Cast<u8>();
+ }
+};
+
+} // anonymous namespace
+
+Math::Vec3<u8> SampleETC1Subtile(u64 value, unsigned int x, unsigned int y) {
+ ETC1Tile tile{value};
+ return tile.GetRGB(x, y);
+}
+
+} // namespace Texture
+} // namespace Pica
diff --git a/src/video_core/texture/etc1.h b/src/video_core/texture/etc1.h
new file mode 100644
index 000000000..e188b19df
--- /dev/null
+++ b/src/video_core/texture/etc1.h
@@ -0,0 +1,16 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+#include "common/vector_math.h"
+
+namespace Pica {
+namespace Texture {
+
+Math::Vec3<u8> SampleETC1Subtile(u64 value, unsigned int x, unsigned int y);
+
+} // namespace Texture
+} // namespace Pica
diff --git a/src/video_core/texture/texture_decode.cpp b/src/video_core/texture/texture_decode.cpp
new file mode 100644
index 000000000..f611a1aa9
--- /dev/null
+++ b/src/video_core/texture/texture_decode.cpp
@@ -0,0 +1,229 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/assert.h"
+#include "common/color.h"
+#include "common/logging/log.h"
+#include "common/math_util.h"
+#include "common/swap.h"
+#include "common/vector_math.h"
+#include "video_core/pica.h"
+#include "video_core/texture/etc1.h"
+#include "video_core/texture/texture_decode.h"
+#include "video_core/utils.h"
+
+using TextureFormat = Pica::Regs::TextureFormat;
+
+namespace Pica {
+namespace Texture {
+
+constexpr size_t TILE_SIZE = 8 * 8;
+constexpr size_t ETC1_SUBTILES = 2 * 2;
+
+size_t CalculateTileSize(TextureFormat format) {
+ switch (format) {
+ case TextureFormat::RGBA8:
+ return 4 * TILE_SIZE;
+
+ case TextureFormat::RGB8:
+ return 3 * TILE_SIZE;
+
+ case TextureFormat::RGB5A1:
+ case TextureFormat::RGB565:
+ case TextureFormat::RGBA4:
+ case TextureFormat::IA8:
+ case TextureFormat::RG8:
+ return 2 * TILE_SIZE;
+
+ case TextureFormat::I8:
+ case TextureFormat::A8:
+ case TextureFormat::IA4:
+ return 1 * TILE_SIZE;
+
+ case TextureFormat::I4:
+ case TextureFormat::A4:
+ return TILE_SIZE / 2;
+
+ case TextureFormat::ETC1:
+ return ETC1_SUBTILES * 8;
+
+ case TextureFormat::ETC1A4:
+ return ETC1_SUBTILES * 16;
+
+ default: // placeholder for yet unknown formats
+ UNIMPLEMENTED();
+ return 0;
+ }
+}
+
+Math::Vec4<u8> LookupTexture(const u8* source, unsigned int x, unsigned int y,
+ const TextureInfo& info, bool disable_alpha) {
+ // Coordinate in tiles
+ const unsigned int coarse_x = x / 8;
+ const unsigned int coarse_y = y / 8;
+
+ // Coordinate inside the tile
+ const unsigned int fine_x = x % 8;
+ const unsigned int fine_y = y % 8;
+
+ const u8* line = source + coarse_y * info.stride;
+ const u8* tile = line + coarse_x * CalculateTileSize(info.format);
+ return LookupTexelInTile(tile, fine_x, fine_y, info, disable_alpha);
+}
+
+Math::Vec4<u8> LookupTexelInTile(const u8* source, unsigned int x, unsigned int y,
+ const TextureInfo& info, bool disable_alpha) {
+ DEBUG_ASSERT(x < 8);
+ DEBUG_ASSERT(y < 8);
+
+ using VideoCore::MortonInterleave;
+
+ switch (info.format) {
+ case Regs::TextureFormat::RGBA8: {
+ auto res = Color::DecodeRGBA8(source + MortonInterleave(x, y) * 4);
+ return {res.r(), res.g(), res.b(), static_cast<u8>(disable_alpha ? 255 : res.a())};
+ }
+
+ case Regs::TextureFormat::RGB8: {
+ auto res = Color::DecodeRGB8(source + MortonInterleave(x, y) * 3);
+ return {res.r(), res.g(), res.b(), 255};
+ }
+
+ case Regs::TextureFormat::RGB5A1: {
+ auto res = Color::DecodeRGB5A1(source + MortonInterleave(x, y) * 2);
+ return {res.r(), res.g(), res.b(), static_cast<u8>(disable_alpha ? 255 : res.a())};
+ }
+
+ case Regs::TextureFormat::RGB565: {
+ auto res = Color::DecodeRGB565(source + MortonInterleave(x, y) * 2);
+ return {res.r(), res.g(), res.b(), 255};
+ }
+
+ case Regs::TextureFormat::RGBA4: {
+ auto res = Color::DecodeRGBA4(source + MortonInterleave(x, y) * 2);
+ return {res.r(), res.g(), res.b(), static_cast<u8>(disable_alpha ? 255 : res.a())};
+ }
+
+ case Regs::TextureFormat::IA8: {
+ const u8* source_ptr = source + MortonInterleave(x, y) * 2;
+
+ if (disable_alpha) {
+ // Show intensity as red, alpha as green
+ return {source_ptr[1], source_ptr[0], 0, 255};
+ } else {
+ return {source_ptr[1], source_ptr[1], source_ptr[1], source_ptr[0]};
+ }
+ }
+
+ case Regs::TextureFormat::RG8: {
+ auto res = Color::DecodeRG8(source + MortonInterleave(x, y) * 2);
+ return {res.r(), res.g(), 0, 255};
+ }
+
+ case Regs::TextureFormat::I8: {
+ const u8* source_ptr = source + MortonInterleave(x, y);
+ return {*source_ptr, *source_ptr, *source_ptr, 255};
+ }
+
+ case Regs::TextureFormat::A8: {
+ const u8* source_ptr = source + MortonInterleave(x, y);
+
+ if (disable_alpha) {
+ return {*source_ptr, *source_ptr, *source_ptr, 255};
+ } else {
+ return {0, 0, 0, *source_ptr};
+ }
+ }
+
+ case Regs::TextureFormat::IA4: {
+ const u8* source_ptr = source + MortonInterleave(x, y);
+
+ u8 i = Color::Convert4To8(((*source_ptr) & 0xF0) >> 4);
+ u8 a = Color::Convert4To8((*source_ptr) & 0xF);
+
+ if (disable_alpha) {
+ // Show intensity as red, alpha as green
+ return {i, a, 0, 255};
+ } else {
+ return {i, i, i, a};
+ }
+ }
+
+ case Regs::TextureFormat::I4: {
+ u32 morton_offset = MortonInterleave(x, y);
+ const u8* source_ptr = source + morton_offset / 2;
+
+ u8 i = (morton_offset % 2) ? ((*source_ptr & 0xF0) >> 4) : (*source_ptr & 0xF);
+ i = Color::Convert4To8(i);
+
+ return {i, i, i, 255};
+ }
+
+ case Regs::TextureFormat::A4: {
+ u32 morton_offset = MortonInterleave(x, y);
+ const u8* source_ptr = source + morton_offset / 2;
+
+ u8 a = (morton_offset % 2) ? ((*source_ptr & 0xF0) >> 4) : (*source_ptr & 0xF);
+ a = Color::Convert4To8(a);
+
+ if (disable_alpha) {
+ return {a, a, a, 255};
+ } else {
+ return {0, 0, 0, a};
+ }
+ }
+
+ case Regs::TextureFormat::ETC1:
+ case Regs::TextureFormat::ETC1A4: {
+ bool has_alpha = (info.format == Regs::TextureFormat::ETC1A4);
+ size_t subtile_size = has_alpha ? 16 : 8;
+
+ // ETC1 further subdivides each 8x8 tile into four 4x4 subtiles
+ constexpr unsigned int subtile_width = 4;
+ constexpr unsigned int subtile_height = 4;
+
+ unsigned int subtile_index = (x / subtile_width) + 2 * (y / subtile_height);
+ x %= subtile_width;
+ y %= subtile_height;
+
+ const u8* subtile_ptr = source + subtile_index * subtile_size;
+
+ u8 alpha = 255;
+ if (has_alpha) {
+ u64_le packed_alpha;
+ memcpy(&packed_alpha, subtile_ptr, sizeof(u64));
+ subtile_ptr += sizeof(u64);
+
+ alpha = Color::Convert4To8((packed_alpha >> (4 * (x * subtile_width + y))) & 0xF);
+ }
+
+ u64_le subtile_data;
+ memcpy(&subtile_data, subtile_ptr, sizeof(u64));
+
+ return Math::MakeVec(SampleETC1Subtile(subtile_data, x, y),
+ disable_alpha ? (u8)255 : alpha);
+ }
+
+ default:
+ LOG_ERROR(HW_GPU, "Unknown texture format: %x", (u32)info.format);
+ DEBUG_ASSERT(false);
+ return {};
+ }
+}
+
+TextureInfo TextureInfo::FromPicaRegister(const Regs::TextureConfig& config,
+ const Regs::TextureFormat& format) {
+ TextureInfo info;
+ info.physical_address = config.GetPhysicalAddress();
+ info.width = config.width;
+ info.height = config.height;
+ info.format = format;
+ info.SetDefaultStride();
+ return info;
+}
+
+} // namespace Texture
+} // namespace Pica
diff --git a/src/video_core/texture/texture_decode.h b/src/video_core/texture/texture_decode.h
new file mode 100644
index 000000000..5c636939a
--- /dev/null
+++ b/src/video_core/texture/texture_decode.h
@@ -0,0 +1,60 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+#include "common/vector_math.h"
+#include "video_core/pica.h"
+
+namespace Pica {
+namespace Texture {
+
+/// Returns the byte size of a 8*8 tile of the specified texture format.
+size_t CalculateTileSize(Pica::Regs::TextureFormat format);
+
+struct TextureInfo {
+ PAddr physical_address;
+ unsigned int width;
+ unsigned int height;
+ ptrdiff_t stride;
+ Pica::Regs::TextureFormat format;
+
+ static TextureInfo FromPicaRegister(const Pica::Regs::TextureConfig& config,
+ const Pica::Regs::TextureFormat& format);
+
+ /// Calculates stride from format and width, assuming that the entire texture is contiguous.
+ void SetDefaultStride() {
+ stride = Pica::Texture::CalculateTileSize(format) * (width / 8);
+ }
+};
+
+/**
+ * Lookup texel located at the given coordinates and return an RGBA vector of its color.
+ * @param source Source pointer to read data from
+ * @param x,y Texture coordinates to read from
+ * @param info TextureInfo object describing the texture setup
+ * @param disable_alpha This is used for debug widgets which use this method to display textures
+ * without providing a good way to visualize alpha by themselves. If true, this will return 255 for
+ * the alpha component, and either drop the information entirely or store it in an "unused" color
+ * channel.
+ * @todo Eventually we should get rid of the disable_alpha parameter.
+ */
+Math::Vec4<u8> LookupTexture(const u8* source, unsigned int x, unsigned int y,
+ const TextureInfo& info, bool disable_alpha = false);
+
+/**
+ * Looks up a texel from a single 8x8 texture tile.
+ *
+ * @param source Pointer to the beginning of the tile.
+ * @param x, y In-tile coordinates to read from. Must be < 8.
+ * @param info TextureInfo describing the texture format.
+ * @param disable_alpha Used for debugging. Sets the result alpha to 255 and either discards the
+ * real alpha or inserts it in an otherwise unused channel.
+ */
+Math::Vec4<u8> LookupTexelInTile(const u8* source, unsigned int x, unsigned int y,
+ const TextureInfo& info, bool disable_alpha);
+
+} // namespace Texture
+} // namespace Pica
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 22:50:42 +0100