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dolphin/Source/Core/VideoBackends/OGL/TextureCache.cpp

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// Copyright 2008 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "VideoBackends/OGL/TextureCache.h"
#include <algorithm>
#include <cmath>
#include <cstring>
#include <fstream>
#include <memory>
#include <vector>
#include "Common/Assert.h"
#include "Common/GL/GLInterfaceBase.h"
#include "Common/MsgHandler.h"
#include "Common/StringUtil.h"
#include "VideoBackends/OGL/FramebufferManager.h"
#include "VideoBackends/OGL/GPUTimer.h"
#include "VideoBackends/OGL/ProgramShaderCache.h"
#include "VideoBackends/OGL/Render.h"
#include "VideoBackends/OGL/SamplerCache.h"
#include "VideoBackends/OGL/StreamBuffer.h"
#include "VideoBackends/OGL/TextureConverter.h"
#include "VideoCommon/ImageWrite.h"
#include "VideoCommon/TextureConversionShader.h"
#include "VideoCommon/TextureDecoder.h"
#include "VideoCommon/VideoConfig.h"
namespace OGL
{
static SHADER s_ColorCopyProgram;
static SHADER s_ColorMatrixProgram;
static SHADER s_DepthMatrixProgram;
static GLuint s_ColorMatrixUniform;
static GLuint s_DepthMatrixUniform;
static GLuint s_ColorCopyPositionUniform;
static GLuint s_ColorMatrixPositionUniform;
static GLuint s_DepthCopyPositionUniform;
static u32 s_ColorCbufid;
static u32 s_DepthCbufid;
static u32 s_Textures[8];
static u32 s_ActiveTexture;
static SHADER s_palette_pixel_shader[3];
static std::unique_ptr<StreamBuffer> s_palette_stream_buffer;
static GLuint s_palette_resolv_texture;
static GLuint s_palette_buffer_offset_uniform[3];
static GLuint s_palette_multiplier_uniform[3];
static GLuint s_palette_copy_position_uniform[3];
struct TextureDecodingProgramInfo
{
const TextureConversionShader::DecodingShaderInfo* base_info = nullptr;
SHADER program;
GLint uniform_dst_size = -1;
GLint uniform_src_size = -1;
GLint uniform_src_row_stride = -1;
GLint uniform_src_offset = -1;
GLint uniform_palette_offset = -1;
bool valid = false;
};
//#define TIME_TEXTURE_DECODING 1
static std::map<std::pair<u32, u32>, TextureDecodingProgramInfo> s_texture_decoding_program_info;
static std::array<GLuint, TextureConversionShader::BUFFER_FORMAT_COUNT>
s_texture_decoding_buffer_views;
static void CreateTextureDecodingResources();
static void DestroyTextureDecodingResources();
bool SaveTexture(const std::string& filename, u32 textarget, u32 tex, int virtual_width,
int virtual_height, unsigned int level)
{
if (GLInterface->GetMode() != GLInterfaceMode::MODE_OPENGL)
return false;
int width = std::max(virtual_width >> level, 1);
int height = std::max(virtual_height >> level, 1);
std::vector<u8> data(width * height * 4);
glActiveTexture(GL_TEXTURE9);
glBindTexture(textarget, tex);
glGetTexImage(textarget, level, GL_RGBA, GL_UNSIGNED_BYTE, data.data());
TextureCache::SetStage();
return TextureToPng(data.data(), width * 4, filename, width, height, true);
}
static GLenum GetGLInternalFormatForTextureFormat(HostTextureFormat format, bool storage)
{
switch (format)
{
case HostTextureFormat::DXT1:
return GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
case HostTextureFormat::DXT3:
return GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
case HostTextureFormat::DXT5:
return GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
case HostTextureFormat::RGBA8:
default:
return storage ? GL_RGBA8 : GL_RGBA;
}
}
static GLenum GetGLFormatForTextureFormat(HostTextureFormat format)
{
switch (format)
{
case HostTextureFormat::RGBA8:
return GL_RGBA;
// Compressed texture formats don't use this parameter.
default:
return GL_UNSIGNED_BYTE;
}
}
static GLenum GetGLTypeForTextureFormat(HostTextureFormat format)
{
switch (format)
{
case HostTextureFormat::RGBA8:
return GL_UNSIGNED_BYTE;
// Compressed texture formats don't use this parameter.
default:
return GL_UNSIGNED_BYTE;
}
}
TextureCache::TCacheEntry::~TCacheEntry()
{
if (texture)
{
for (auto& gtex : s_Textures)
if (gtex == texture)
gtex = 0;
glDeleteTextures(1, &texture);
texture = 0;
}
if (framebuffer)
{
glDeleteFramebuffers(1, &framebuffer);
framebuffer = 0;
}
}
TextureCache::TCacheEntry::TCacheEntry(const TCacheEntryConfig& _config) : TCacheEntryBase(_config)
{
glGenTextures(1, &texture);
framebuffer = 0;
}
void TextureCache::TCacheEntry::Bind(unsigned int stage)
{
if (s_Textures[stage] != texture)
{
if (s_ActiveTexture != stage)
{
glActiveTexture(GL_TEXTURE0 + stage);
s_ActiveTexture = stage;
}
glBindTexture(GL_TEXTURE_2D_ARRAY, texture);
s_Textures[stage] = texture;
}
}
bool TextureCache::TCacheEntry::Save(const std::string& filename, unsigned int level)
{
// We can't dump compressed textures currently (it would mean drawing them to a RGBA8
// framebuffer, and saving that). TextureCache does not call Save for custom textures
// anyway, so this is fine for now.
_assert_(config.format == HostTextureFormat::RGBA8);
return SaveTexture(filename, GL_TEXTURE_2D_ARRAY, texture, config.width, config.height, level);
}
TextureCache::TCacheEntryBase* TextureCache::CreateTexture(const TCacheEntryConfig& config)
{
TCacheEntry* entry = new TCacheEntry(config);
glActiveTexture(GL_TEXTURE9);
glBindTexture(GL_TEXTURE_2D_ARRAY, entry->texture);
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAX_LEVEL, config.levels - 1);
if (g_ogl_config.bSupportsTextureStorage)
{
GLenum gl_internal_format = GetGLInternalFormatForTextureFormat(config.format, true);
glTexStorage3D(GL_TEXTURE_2D_ARRAY, config.levels, gl_internal_format, config.width,
config.height, config.layers);
}
if (config.rendertarget)
{
// We can't render to compressed formats.
_assert_(!IsCompressedHostTextureFormat(config.format));
if (!g_ogl_config.bSupportsTextureStorage)
{
for (u32 level = 0; level < config.levels; level++)
{
glTexImage3D(GL_TEXTURE_2D_ARRAY, level, GL_RGBA, std::max(config.width >> level, 1u),
std::max(config.height >> level, 1u), config.layers, 0, GL_RGBA,
GL_UNSIGNED_BYTE, nullptr);
}
}
glGenFramebuffers(1, &entry->framebuffer);
FramebufferManager::SetFramebuffer(entry->framebuffer);
FramebufferManager::FramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D_ARRAY, entry->texture, 0);
}
TextureCache::SetStage();
return entry;
}
void TextureCache::TCacheEntry::CopyRectangleFromTexture(const TCacheEntryBase* source,
const MathUtil::Rectangle<int>& srcrect,
const MathUtil::Rectangle<int>& dstrect)
{
TCacheEntry* srcentry = (TCacheEntry*)source;
if (srcrect.GetWidth() == dstrect.GetWidth() && srcrect.GetHeight() == dstrect.GetHeight() &&
g_ogl_config.bSupportsCopySubImage)
{
glCopyImageSubData(srcentry->texture, GL_TEXTURE_2D_ARRAY, 0, srcrect.left, srcrect.top, 0,
texture, GL_TEXTURE_2D_ARRAY, 0, dstrect.left, dstrect.top, 0,
dstrect.GetWidth(), dstrect.GetHeight(), srcentry->config.layers);
return;
}
else if (!framebuffer)
{
glGenFramebuffers(1, &framebuffer);
FramebufferManager::SetFramebuffer(framebuffer);
FramebufferManager::FramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D_ARRAY, texture, 0);
}
g_renderer->ResetAPIState();
FramebufferManager::SetFramebuffer(framebuffer);
glActiveTexture(GL_TEXTURE9);
glBindTexture(GL_TEXTURE_2D_ARRAY, srcentry->texture);
g_sampler_cache->BindLinearSampler(9);
glViewport(dstrect.left, dstrect.top, dstrect.GetWidth(), dstrect.GetHeight());
s_ColorCopyProgram.Bind();
glUniform4f(s_ColorCopyPositionUniform, float(srcrect.left), float(srcrect.top),
float(srcrect.GetWidth()), float(srcrect.GetHeight()));
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
FramebufferManager::SetFramebuffer(0);
g_renderer->RestoreAPIState();
}
void TextureCache::TCacheEntry::Load(u32 level, u32 width, u32 height, u32 row_length,
const u8* buffer, size_t buffer_size)
{
if (level >= config.levels)
PanicAlert("Texture only has %d levels, can't update level %d", config.levels, level);
if (width != std::max(1u, config.width >> level) ||
height != std::max(1u, config.height >> level))
PanicAlert("size of level %d must be %dx%d, but %dx%d requested", level,
std::max(1u, config.width >> level), std::max(1u, config.height >> level), width,
height);
glActiveTexture(GL_TEXTURE9);
glBindTexture(GL_TEXTURE_2D_ARRAY, texture);
if (row_length != width)
glPixelStorei(GL_UNPACK_ROW_LENGTH, row_length);
GLenum gl_internal_format = GetGLInternalFormatForTextureFormat(config.format, false);
if (IsCompressedHostTextureFormat(config.format))
{
if (g_ogl_config.bSupportsTextureStorage)
{
glCompressedTexSubImage3D(GL_TEXTURE_2D_ARRAY, level, 0, 0, 0, width, height, 1,
gl_internal_format, static_cast<GLsizei>(buffer_size), buffer);
}
else
{
glCompressedTexImage3D(GL_TEXTURE_2D_ARRAY, level, gl_internal_format, width, height, 1, 0,
static_cast<GLsizei>(buffer_size), buffer);
}
}
else
{
GLenum gl_format = GetGLFormatForTextureFormat(config.format);
GLenum gl_type = GetGLTypeForTextureFormat(config.format);
if (g_ogl_config.bSupportsTextureStorage)
{
glTexSubImage3D(GL_TEXTURE_2D_ARRAY, level, 0, 0, 0, width, height, 1, gl_format, gl_type,
buffer);
}
else
{
glTexImage3D(GL_TEXTURE_2D_ARRAY, level, gl_internal_format, width, height, 1, 0, gl_format,
gl_type, buffer);
}
}
if (row_length != width)
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
TextureCache::SetStage();
}
void TextureCache::TCacheEntry::FromRenderTarget(bool is_depth_copy, const EFBRectangle& srcRect,
bool scaleByHalf, unsigned int cbufid,
const float* colmat)
{
g_renderer->ResetAPIState(); // reset any game specific settings
// Make sure to resolve anything we need to read from.
const GLuint read_texture = is_depth_copy ?
FramebufferManager::ResolveAndGetDepthTarget(srcRect) :
FramebufferManager::ResolveAndGetRenderTarget(srcRect);
FramebufferManager::SetFramebuffer(framebuffer);
OpenGL_BindAttributelessVAO();
glActiveTexture(GL_TEXTURE9);
glBindTexture(GL_TEXTURE_2D_ARRAY, read_texture);
if (scaleByHalf)
g_sampler_cache->BindLinearSampler(9);
else
g_sampler_cache->BindNearestSampler(9);
glViewport(0, 0, config.width, config.height);
GLuint uniform_location;
if (is_depth_copy)
{
s_DepthMatrixProgram.Bind();
if (s_DepthCbufid != cbufid)
glUniform4fv(s_DepthMatrixUniform, 5, colmat);
s_DepthCbufid = cbufid;
uniform_location = s_DepthCopyPositionUniform;
}
else
{
s_ColorMatrixProgram.Bind();
if (s_ColorCbufid != cbufid)
glUniform4fv(s_ColorMatrixUniform, 7, colmat);
s_ColorCbufid = cbufid;
uniform_location = s_ColorMatrixPositionUniform;
}
TargetRectangle R = g_renderer->ConvertEFBRectangle(srcRect);
glUniform4f(uniform_location, static_cast<float>(R.left), static_cast<float>(R.top),
static_cast<float>(R.right), static_cast<float>(R.bottom));
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
FramebufferManager::SetFramebuffer(0);
g_renderer->RestoreAPIState();
}
void TextureCache::CopyEFB(u8* dst, const EFBCopyFormat& format, u32 native_width,
u32 bytes_per_row, u32 num_blocks_y, u32 memory_stride,
bool is_depth_copy, const EFBRectangle& src_rect, bool scale_by_half)
{
TextureConverter::EncodeToRamFromTexture(dst, format, native_width, bytes_per_row, num_blocks_y,
memory_stride, is_depth_copy, src_rect, scale_by_half);
}
TextureCache::TextureCache()
{
CompileShaders();
s_ActiveTexture = -1;
for (auto& gtex : s_Textures)
gtex = -1;
if (g_ActiveConfig.backend_info.bSupportsPaletteConversion)
{
s32 buffer_size_mb = (g_ActiveConfig.backend_info.bSupportsGPUTextureDecoding ? 32 : 1);
s32 buffer_size = buffer_size_mb * 1024 * 1024;
s32 max_buffer_size = 0;
// The minimum MAX_TEXTURE_BUFFER_SIZE that the spec mandates is 65KB, we are asking for a 1MB
// buffer here. This buffer is also used as storage for undecoded textures when compute shader
// texture decoding is enabled, in which case the requested size is 32MB.
glGetIntegerv(GL_MAX_TEXTURE_BUFFER_SIZE, &max_buffer_size);
// Clamp the buffer size to the maximum size that the driver supports.
buffer_size = std::min(buffer_size, max_buffer_size);
s_palette_stream_buffer = StreamBuffer::Create(GL_TEXTURE_BUFFER, buffer_size);
glGenTextures(1, &s_palette_resolv_texture);
glBindTexture(GL_TEXTURE_BUFFER, s_palette_resolv_texture);
glTexBuffer(GL_TEXTURE_BUFFER, GL_R16UI, s_palette_stream_buffer->m_buffer);
CreateTextureDecodingResources();
}
}
TextureCache::~TextureCache()
{
DeleteShaders();
DestroyTextureDecodingResources();
if (g_ActiveConfig.backend_info.bSupportsPaletteConversion)
{
s_palette_stream_buffer.reset();
glDeleteTextures(1, &s_palette_resolv_texture);
}
}
void TextureCache::DisableStage(unsigned int stage)
{
}
void TextureCache::SetStage()
{
// -1 is the initial value as we don't know which texture should be bound
if (s_ActiveTexture != (u32)-1)
glActiveTexture(GL_TEXTURE0 + s_ActiveTexture);
}
bool TextureCache::CompileShaders()
{
constexpr const char* color_copy_program = "SAMPLER_BINDING(9) uniform sampler2DArray samp9;\n"
"in vec3 f_uv0;\n"
"out vec4 ocol0;\n"
"\n"
"void main(){\n"
" vec4 texcol = texture(samp9, f_uv0);\n"
" ocol0 = texcol;\n"
"}\n";
constexpr const char* color_matrix_program =
"SAMPLER_BINDING(9) uniform sampler2DArray samp9;\n"
"uniform vec4 colmat[7];\n"
"in vec3 f_uv0;\n"
"out vec4 ocol0;\n"
"\n"
"void main(){\n"
" vec4 texcol = texture(samp9, f_uv0);\n"
" texcol = floor(texcol * colmat[5]) * colmat[6];\n"
" ocol0 = texcol * mat4(colmat[0], colmat[1], colmat[2], colmat[3]) + colmat[4];\n"
"}\n";
constexpr const char* depth_matrix_program =
"SAMPLER_BINDING(9) uniform sampler2DArray samp9;\n"
"uniform vec4 colmat[5];\n"
"in vec3 f_uv0;\n"
"out vec4 ocol0;\n"
"\n"
"void main(){\n"
" vec4 texcol = texture(samp9, vec3(f_uv0.xy, %s));\n"
" int depth = int(texcol.x * 16777216.0);\n"
// Convert to Z24 format
" ivec4 workspace;\n"
" workspace.r = (depth >> 16) & 255;\n"
" workspace.g = (depth >> 8) & 255;\n"
" workspace.b = depth & 255;\n"
// Convert to Z4 format
" workspace.a = (depth >> 16) & 0xF0;\n"
// Normalize components to [0.0..1.0]
" texcol = vec4(workspace) / 255.0;\n"
" ocol0 = texcol * mat4(colmat[0], colmat[1], colmat[2], colmat[3]) + colmat[4];\n"
"}\n";
constexpr const char* vertex_program =
"out vec3 %s_uv0;\n"
"SAMPLER_BINDING(9) uniform sampler2DArray samp9;\n"
"uniform vec4 copy_position;\n" // left, top, right, bottom
"void main()\n"
"{\n"
" vec2 rawpos = vec2(gl_VertexID&1, gl_VertexID&2);\n"
" %s_uv0 = vec3(mix(copy_position.xy, copy_position.zw, rawpos) / vec2(textureSize(samp9, "
"0).xy), 0.0);\n"
" gl_Position = vec4(rawpos*2.0-1.0, 0.0, 1.0);\n"
"}\n";
const std::string geo_program = g_ActiveConfig.iStereoMode > 0 ?
"layout(triangles) in;\n"
"layout(triangle_strip, max_vertices = 6) out;\n"
"in vec3 v_uv0[3];\n"
"out vec3 f_uv0;\n"
"SAMPLER_BINDING(9) uniform sampler2DArray samp9;\n"
"void main()\n"
"{\n"
" int layers = textureSize(samp9, 0).z;\n"
" for (int layer = 0; layer < layers; ++layer) {\n"
" for (int i = 0; i < 3; ++i) {\n"
" f_uv0 = vec3(v_uv0[i].xy, layer);\n"
" gl_Position = gl_in[i].gl_Position;\n"
" gl_Layer = layer;\n"
" EmitVertex();\n"
" }\n"
" EndPrimitive();\n"
" }\n"
"}\n" :
"";
const char* prefix = geo_program.empty() ? "f" : "v";
const char* depth_layer = g_ActiveConfig.bStereoEFBMonoDepth ? "0.0" : "f_uv0.z";
if (!ProgramShaderCache::CompileShader(s_ColorCopyProgram,
StringFromFormat(vertex_program, prefix, prefix),
color_copy_program, geo_program) ||
!ProgramShaderCache::CompileShader(s_ColorMatrixProgram,
StringFromFormat(vertex_program, prefix, prefix),
color_matrix_program, geo_program) ||
!ProgramShaderCache::CompileShader(
s_DepthMatrixProgram, StringFromFormat(vertex_program, prefix, prefix),
StringFromFormat(depth_matrix_program, depth_layer), geo_program))
{
return false;
}
s_ColorMatrixUniform = glGetUniformLocation(s_ColorMatrixProgram.glprogid, "colmat");
s_DepthMatrixUniform = glGetUniformLocation(s_DepthMatrixProgram.glprogid, "colmat");
s_ColorCbufid = -1;
s_DepthCbufid = -1;
s_ColorCopyPositionUniform = glGetUniformLocation(s_ColorCopyProgram.glprogid, "copy_position");
s_ColorMatrixPositionUniform =
glGetUniformLocation(s_ColorMatrixProgram.glprogid, "copy_position");
s_DepthCopyPositionUniform = glGetUniformLocation(s_DepthMatrixProgram.glprogid, "copy_position");
std::string palette_shader =
R"GLSL(
uniform int texture_buffer_offset;
uniform float multiplier;
SAMPLER_BINDING(9) uniform sampler2DArray samp9;
SAMPLER_BINDING(10) uniform usamplerBuffer samp10;
in vec3 f_uv0;
out vec4 ocol0;
int Convert3To8(int v)
{
// Swizzle bits: 00000123 -> 12312312
return (v << 5) | (v << 2) | (v >> 1);
}
int Convert4To8(int v)
{
// Swizzle bits: 00001234 -> 12341234
return (v << 4) | v;
}
int Convert5To8(int v)
{
// Swizzle bits: 00012345 -> 12345123
return (v << 3) | (v >> 2);
}
int Convert6To8(int v)
{
// Swizzle bits: 00123456 -> 12345612
return (v << 2) | (v >> 4);
}
float4 DecodePixel_RGB5A3(int val)
{
int r,g,b,a;
if ((val&0x8000) > 0)
{
r=Convert5To8((val>>10) & 0x1f);
g=Convert5To8((val>>5 ) & 0x1f);
b=Convert5To8((val ) & 0x1f);
a=0xFF;
}
else
{
a=Convert3To8((val>>12) & 0x7);
r=Convert4To8((val>>8 ) & 0xf);
g=Convert4To8((val>>4 ) & 0xf);
b=Convert4To8((val ) & 0xf);
}
return float4(r, g, b, a) / 255.0;
}
float4 DecodePixel_RGB565(int val)
{
int r, g, b, a;
r = Convert5To8((val >> 11) & 0x1f);
g = Convert6To8((val >> 5) & 0x3f);
b = Convert5To8((val) & 0x1f);
a = 0xFF;
return float4(r, g, b, a) / 255.0;
}
float4 DecodePixel_IA8(int val)
{
int i = val & 0xFF;
int a = val >> 8;
return float4(i, i, i, a) / 255.0;
}
void main()
{
int src = int(round(texture(samp9, f_uv0).r * multiplier));
src = int(texelFetch(samp10, src + texture_buffer_offset).r);
src = ((src << 8) & 0xFF00) | (src >> 8);
ocol0 = DECODE(src);
}
)GLSL";
if (g_ActiveConfig.backend_info.bSupportsPaletteConversion)
{
if (!ProgramShaderCache::CompileShader(
s_palette_pixel_shader[GX_TL_IA8], StringFromFormat(vertex_program, prefix, prefix),
"#define DECODE DecodePixel_IA8" + palette_shader, geo_program))
{
return false;
}
s_palette_buffer_offset_uniform[GX_TL_IA8] =
glGetUniformLocation(s_palette_pixel_shader[GX_TL_IA8].glprogid, "texture_buffer_offset");
s_palette_multiplier_uniform[GX_TL_IA8] =
glGetUniformLocation(s_palette_pixel_shader[GX_TL_IA8].glprogid, "multiplier");
s_palette_copy_position_uniform[GX_TL_IA8] =
glGetUniformLocation(s_palette_pixel_shader[GX_TL_IA8].glprogid, "copy_position");
if (!ProgramShaderCache::CompileShader(
s_palette_pixel_shader[GX_TL_RGB565], StringFromFormat(vertex_program, prefix, prefix),
"#define DECODE DecodePixel_RGB565" + palette_shader, geo_program))
{
return false;
}
s_palette_buffer_offset_uniform[GX_TL_RGB565] = glGetUniformLocation(
s_palette_pixel_shader[GX_TL_RGB565].glprogid, "texture_buffer_offset");
s_palette_multiplier_uniform[GX_TL_RGB565] =
glGetUniformLocation(s_palette_pixel_shader[GX_TL_RGB565].glprogid, "multiplier");
s_palette_copy_position_uniform[GX_TL_RGB565] =
glGetUniformLocation(s_palette_pixel_shader[GX_TL_RGB565].glprogid, "copy_position");
if (!ProgramShaderCache::CompileShader(
s_palette_pixel_shader[GX_TL_RGB5A3], StringFromFormat(vertex_program, prefix, prefix),
"#define DECODE DecodePixel_RGB5A3" + palette_shader, geo_program))
{
return false;
}
s_palette_buffer_offset_uniform[GX_TL_RGB5A3] = glGetUniformLocation(
s_palette_pixel_shader[GX_TL_RGB5A3].glprogid, "texture_buffer_offset");
s_palette_multiplier_uniform[GX_TL_RGB5A3] =
glGetUniformLocation(s_palette_pixel_shader[GX_TL_RGB5A3].glprogid, "multiplier");
s_palette_copy_position_uniform[GX_TL_RGB5A3] =
glGetUniformLocation(s_palette_pixel_shader[GX_TL_RGB5A3].glprogid, "copy_position");
}
return true;
}
void TextureCache::DeleteShaders()
{
s_ColorMatrixProgram.Destroy();
s_DepthMatrixProgram.Destroy();
if (g_ActiveConfig.backend_info.bSupportsPaletteConversion)
for (auto& shader : s_palette_pixel_shader)
shader.Destroy();
}
void TextureCache::ConvertTexture(TCacheEntryBase* _entry, TCacheEntryBase* _unconverted,
void* palette, TlutFormat format)
{
if (!g_ActiveConfig.backend_info.bSupportsPaletteConversion)
return;
g_renderer->ResetAPIState();
TCacheEntry* entry = (TCacheEntry*)_entry;
TCacheEntry* unconverted = (TCacheEntry*)_unconverted;
glActiveTexture(GL_TEXTURE9);
glBindTexture(GL_TEXTURE_2D_ARRAY, unconverted->texture);
g_sampler_cache->BindNearestSampler(9);
FramebufferManager::SetFramebuffer(entry->framebuffer);
glViewport(0, 0, entry->config.width, entry->config.height);
s_palette_pixel_shader[format].Bind();
// C14 textures are currently unsupported
int size = (unconverted->format & 0xf) == GX_TF_I4 ? 32 : 512;
auto buffer = s_palette_stream_buffer->Map(size);
memcpy(buffer.first, palette, size);
s_palette_stream_buffer->Unmap(size);
glUniform1i(s_palette_buffer_offset_uniform[format], buffer.second / 2);
glUniform1f(s_palette_multiplier_uniform[format],
(unconverted->format & 0xf) == 0 ? 15.0f : 255.0f);
glUniform4f(s_palette_copy_position_uniform[format], 0.0f, 0.0f, (float)unconverted->config.width,
(float)unconverted->config.height);
glActiveTexture(GL_TEXTURE10);
glBindTexture(GL_TEXTURE_BUFFER, s_palette_resolv_texture);
g_sampler_cache->BindNearestSampler(10);
OpenGL_BindAttributelessVAO();
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
FramebufferManager::SetFramebuffer(0);
g_renderer->RestoreAPIState();
}
static const std::string decoding_vertex_shader = R"(
void main()
{
vec2 rawpos = vec2(gl_VertexID&1, gl_VertexID&2);
gl_Position = vec4(rawpos*2.0-1.0, 0.0, 1.0);
}
)";
void CreateTextureDecodingResources()
{
static const GLenum gl_view_types[TextureConversionShader::BUFFER_FORMAT_COUNT] = {
GL_R8UI, // BUFFER_FORMAT_R8_UINT
GL_R16UI, // BUFFER_FORMAT_R16_UINT
GL_RG32UI, // BUFFER_FORMAT_R32G32_UINT
};
glGenTextures(TextureConversionShader::BUFFER_FORMAT_COUNT,
s_texture_decoding_buffer_views.data());
for (size_t i = 0; i < TextureConversionShader::BUFFER_FORMAT_COUNT; i++)
{
glBindTexture(GL_TEXTURE_BUFFER, s_texture_decoding_buffer_views[i]);
glTexBuffer(GL_TEXTURE_BUFFER, gl_view_types[i], s_palette_stream_buffer->m_buffer);
}
}
void DestroyTextureDecodingResources()
{
glDeleteTextures(TextureConversionShader::BUFFER_FORMAT_COUNT,
s_texture_decoding_buffer_views.data());
s_texture_decoding_buffer_views.fill(0);
s_texture_decoding_program_info.clear();
}
bool TextureCache::SupportsGPUTextureDecode(TextureFormat format, TlutFormat palette_format)
{
auto key = std::make_pair(static_cast<u32>(format), static_cast<u32>(palette_format));
auto iter = s_texture_decoding_program_info.find(key);
if (iter != s_texture_decoding_program_info.end())
return iter->second.valid;
TextureDecodingProgramInfo info;
info.base_info = TextureConversionShader::GetDecodingShaderInfo(format);
if (!info.base_info)
{
s_texture_decoding_program_info.emplace(key, info);
return false;
}
std::string shader_source =
TextureConversionShader::GenerateDecodingShader(format, palette_format, APIType::OpenGL);
if (shader_source.empty())
{
s_texture_decoding_program_info.emplace(key, info);
return false;
}
if (!ProgramShaderCache::CompileComputeShader(info.program, shader_source))
{
s_texture_decoding_program_info.emplace(key, info);
return false;
}
info.uniform_dst_size = glGetUniformLocation(info.program.glprogid, "u_dst_size");
info.uniform_src_size = glGetUniformLocation(info.program.glprogid, "u_src_size");
info.uniform_src_offset = glGetUniformLocation(info.program.glprogid, "u_src_offset");
info.uniform_src_row_stride = glGetUniformLocation(info.program.glprogid, "u_src_row_stride");
info.uniform_palette_offset = glGetUniformLocation(info.program.glprogid, "u_palette_offset");
info.valid = true;
s_texture_decoding_program_info.emplace(key, info);
return true;
}
void TextureCache::DecodeTextureOnGPU(TCacheEntryBase* entry, u32 dst_level, const u8* data,
size_t data_size, TextureFormat format, u32 width, u32 height,
u32 aligned_width, u32 aligned_height, u32 row_stride,
const u8* palette, TlutFormat palette_format)
{
auto key = std::make_pair(static_cast<u32>(format), static_cast<u32>(palette_format));
auto iter = s_texture_decoding_program_info.find(key);
if (iter == s_texture_decoding_program_info.end())
return;
#ifdef TIME_TEXTURE_DECODING
GPUTimer timer;
#endif
// Copy to GPU-visible buffer, aligned to the data type.
auto info = iter->second;
u32 bytes_per_buffer_elem =
TextureConversionShader::GetBytesPerBufferElement(info.base_info->buffer_format);
// Only copy palette if it is required.
bool has_palette = info.base_info->palette_size > 0;
u32 total_upload_size = static_cast<u32>(data_size);
u32 palette_offset = total_upload_size;
if (has_palette)
{
// Align to u16.
if ((total_upload_size % sizeof(u16)) != 0)
{
total_upload_size++;
palette_offset++;
}
total_upload_size += info.base_info->palette_size;
}
// Allocate space in stream buffer, and copy texture + palette across.
auto buffer = s_palette_stream_buffer->Map(total_upload_size, bytes_per_buffer_elem);
memcpy(buffer.first, data, data_size);
if (has_palette)
memcpy(buffer.first + palette_offset, palette, info.base_info->palette_size);
s_palette_stream_buffer->Unmap(total_upload_size);
info.program.Bind();
// Calculate stride in buffer elements
u32 row_stride_in_elements = row_stride / bytes_per_buffer_elem;
u32 offset_in_elements = buffer.second / bytes_per_buffer_elem;
u32 palette_offset_in_elements = (buffer.second + palette_offset) / sizeof(u16);
if (info.uniform_dst_size >= 0)
glUniform2ui(info.uniform_dst_size, width, height);
if (info.uniform_src_size >= 0)
glUniform2ui(info.uniform_src_size, aligned_width, aligned_height);
if (info.uniform_src_offset >= 0)
glUniform1ui(info.uniform_src_offset, offset_in_elements);
if (info.uniform_src_row_stride >= 0)
glUniform1ui(info.uniform_src_row_stride, row_stride_in_elements);
if (info.uniform_palette_offset >= 0)
glUniform1ui(info.uniform_palette_offset, palette_offset_in_elements);
glActiveTexture(GL_TEXTURE9);
glBindTexture(GL_TEXTURE_BUFFER, s_texture_decoding_buffer_views[info.base_info->buffer_format]);
if (has_palette)
{
// Use an R16UI view for the palette.
glActiveTexture(GL_TEXTURE10);
glBindTexture(GL_TEXTURE_BUFFER, s_palette_resolv_texture);
}
auto dispatch_groups =
TextureConversionShader::GetDispatchCount(info.base_info, aligned_width, aligned_height);
glBindImageTexture(0, static_cast<TCacheEntry*>(entry)->texture, dst_level, GL_TRUE, 0,
GL_WRITE_ONLY, GL_RGBA8);
glDispatchCompute(dispatch_groups.first, dispatch_groups.second, 1);
glMemoryBarrier(GL_TEXTURE_UPDATE_BARRIER_BIT);
TextureCache::SetStage();
#ifdef TIME_TEXTURE_DECODING
WARN_LOG(VIDEO, "Decode texture format %u size %ux%u took %.4fms", static_cast<u32>(format),
width, height, timer.GetTimeMilliseconds());
#endif
}
}
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