mirror of
https://github.com/dolphin-emu/dolphin.git
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491c10ec96
This will generate one shader per copy format. For now, it is the same shader with the colmat hard coded. So it should already improve the GPU performance a bit, but a rewrite of the shader generator is suggested. Half of the patch is done by linkmauve1: VideoCommon: Reorganise the shader writes.
550 lines
19 KiB
C++
550 lines
19 KiB
C++
// Copyright 2008 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <cmath>
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#include <cstring>
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#include <fstream>
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#include <memory>
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#include <vector>
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#include "Common/Assert.h"
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#include "Common/GL/GLInterfaceBase.h"
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#include "Common/MsgHandler.h"
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#include "Common/StringUtil.h"
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#include "VideoBackends/OGL/FramebufferManager.h"
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#include "VideoBackends/OGL/GPUTimer.h"
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#include "VideoBackends/OGL/OGLTexture.h"
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#include "VideoBackends/OGL/ProgramShaderCache.h"
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#include "VideoBackends/OGL/Render.h"
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#include "VideoBackends/OGL/SamplerCache.h"
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#include "VideoBackends/OGL/StreamBuffer.h"
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#include "VideoBackends/OGL/TextureCache.h"
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#include "VideoBackends/OGL/TextureConverter.h"
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#include "VideoCommon/ImageWrite.h"
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#include "VideoCommon/TextureConversionShader.h"
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#include "VideoCommon/TextureConverterShaderGen.h"
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#include "VideoCommon/TextureDecoder.h"
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#include "VideoCommon/VideoCommon.h"
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#include "VideoCommon/VideoConfig.h"
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namespace OGL
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{
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constexpr const char* vertex_program =
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"out vec3 %c_uv0;\n"
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"SAMPLER_BINDING(9) uniform sampler2DArray samp9;\n"
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"uniform vec4 copy_position;\n" // left, top, right, bottom
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"void main()\n"
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"{\n"
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" vec2 rawpos = vec2(gl_VertexID&1, gl_VertexID&2);\n"
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" %c_uv0 = vec3(mix(copy_position.xy, copy_position.zw, rawpos) / vec2(textureSize(samp9, "
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"0).xy), 0.0);\n"
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" gl_Position = vec4(rawpos*2.0-1.0, 0.0, 1.0);\n"
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"}\n";
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constexpr const char* geometry_program = "layout(triangles) in;\n"
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"layout(triangle_strip, max_vertices = 6) out;\n"
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"in vec3 v_uv0[3];\n"
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"out vec3 f_uv0;\n"
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"SAMPLER_BINDING(9) uniform sampler2DArray samp9;\n"
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"void main()\n"
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"{\n"
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" int layers = textureSize(samp9, 0).z;\n"
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" for (int layer = 0; layer < layers; ++layer) {\n"
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" for (int i = 0; i < 3; ++i) {\n"
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" f_uv0 = vec3(v_uv0[i].xy, layer);\n"
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" gl_Position = gl_in[i].gl_Position;\n"
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" gl_Layer = layer;\n"
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" EmitVertex();\n"
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" }\n"
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" EndPrimitive();\n"
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" }\n"
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"}\n";
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//#define TIME_TEXTURE_DECODING 1
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void TextureCache::CopyEFB(u8* dst, const EFBCopyParams& params, u32 native_width,
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u32 bytes_per_row, u32 num_blocks_y, u32 memory_stride,
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const EFBRectangle& src_rect, bool scale_by_half)
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{
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TextureConverter::EncodeToRamFromTexture(dst, params, native_width, bytes_per_row, num_blocks_y,
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memory_stride, src_rect, scale_by_half);
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}
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TextureCache::TextureCache()
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{
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CompileShaders();
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if (g_ActiveConfig.backend_info.bSupportsPaletteConversion)
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{
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s32 buffer_size_mb = (g_ActiveConfig.backend_info.bSupportsGPUTextureDecoding ? 32 : 1);
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s32 buffer_size = buffer_size_mb * 1024 * 1024;
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s32 max_buffer_size = 0;
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// The minimum MAX_TEXTURE_BUFFER_SIZE that the spec mandates is 65KB, we are asking for a 1MB
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// buffer here. This buffer is also used as storage for undecoded textures when compute shader
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// texture decoding is enabled, in which case the requested size is 32MB.
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glGetIntegerv(GL_MAX_TEXTURE_BUFFER_SIZE, &max_buffer_size);
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// Clamp the buffer size to the maximum size that the driver supports.
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buffer_size = std::min(buffer_size, max_buffer_size);
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m_palette_stream_buffer = StreamBuffer::Create(GL_TEXTURE_BUFFER, buffer_size);
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glGenTextures(1, &m_palette_resolv_texture);
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glBindTexture(GL_TEXTURE_BUFFER, m_palette_resolv_texture);
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glTexBuffer(GL_TEXTURE_BUFFER, GL_R16UI, m_palette_stream_buffer->m_buffer);
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if (g_ActiveConfig.backend_info.bSupportsGPUTextureDecoding)
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CreateTextureDecodingResources();
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}
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}
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TextureCache::~TextureCache()
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{
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DeleteShaders();
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if (g_ActiveConfig.backend_info.bSupportsGPUTextureDecoding)
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DestroyTextureDecodingResources();
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if (g_ActiveConfig.backend_info.bSupportsPaletteConversion)
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{
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glDeleteTextures(1, &m_palette_resolv_texture);
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}
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}
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TextureCache* TextureCache::GetInstance()
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{
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return static_cast<TextureCache*>(g_texture_cache.get());
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}
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const SHADER& TextureCache::GetColorCopyProgram() const
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{
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return m_colorCopyProgram;
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}
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GLuint TextureCache::GetColorCopyPositionUniform() const
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{
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return m_colorCopyPositionUniform;
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}
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bool TextureCache::CompilePaletteShader(TLUTFormat tlutfmt, const std::string& vcode,
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const std::string& pcode, const std::string& gcode)
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{
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_assert_(IsValidTLUTFormat(tlutfmt));
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PaletteShader& shader = m_palette_shaders[static_cast<int>(tlutfmt)];
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if (!ProgramShaderCache::CompileShader(shader.shader, vcode, pcode, gcode))
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return false;
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shader.buffer_offset_uniform =
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glGetUniformLocation(shader.shader.glprogid, "texture_buffer_offset");
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shader.multiplier_uniform = glGetUniformLocation(shader.shader.glprogid, "multiplier");
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shader.copy_position_uniform = glGetUniformLocation(shader.shader.glprogid, "copy_position");
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return true;
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}
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bool TextureCache::CompileShaders()
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{
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constexpr const char* color_copy_program = "SAMPLER_BINDING(9) uniform sampler2DArray samp9;\n"
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"in vec3 f_uv0;\n"
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"out vec4 ocol0;\n"
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"\n"
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"void main(){\n"
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" vec4 texcol = texture(samp9, f_uv0);\n"
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" ocol0 = texcol;\n"
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"}\n";
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std::string geo_program = "";
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char prefix = 'f';
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if (g_ActiveConfig.stereo_mode != StereoMode::Off)
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{
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geo_program = geometry_program;
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prefix = 'v';
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}
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if (!ProgramShaderCache::CompileShader(m_colorCopyProgram,
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StringFromFormat(vertex_program, prefix, prefix),
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color_copy_program, geo_program))
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{
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return false;
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}
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m_colorCopyPositionUniform = glGetUniformLocation(m_colorCopyProgram.glprogid, "copy_position");
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std::string palette_shader =
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R"GLSL(
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uniform int texture_buffer_offset;
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uniform float multiplier;
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SAMPLER_BINDING(9) uniform sampler2DArray samp9;
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SAMPLER_BINDING(10) uniform usamplerBuffer samp10;
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in vec3 f_uv0;
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out vec4 ocol0;
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int Convert3To8(int v)
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{
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// Swizzle bits: 00000123 -> 12312312
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return (v << 5) | (v << 2) | (v >> 1);
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}
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int Convert4To8(int v)
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{
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// Swizzle bits: 00001234 -> 12341234
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return (v << 4) | v;
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}
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int Convert5To8(int v)
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{
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// Swizzle bits: 00012345 -> 12345123
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return (v << 3) | (v >> 2);
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}
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int Convert6To8(int v)
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{
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// Swizzle bits: 00123456 -> 12345612
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return (v << 2) | (v >> 4);
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}
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float4 DecodePixel_RGB5A3(int val)
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{
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int r,g,b,a;
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if ((val&0x8000) > 0)
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{
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r=Convert5To8((val>>10) & 0x1f);
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g=Convert5To8((val>>5 ) & 0x1f);
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b=Convert5To8((val ) & 0x1f);
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a=0xFF;
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}
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else
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{
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a=Convert3To8((val>>12) & 0x7);
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r=Convert4To8((val>>8 ) & 0xf);
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g=Convert4To8((val>>4 ) & 0xf);
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b=Convert4To8((val ) & 0xf);
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}
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return float4(r, g, b, a) / 255.0;
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}
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float4 DecodePixel_RGB565(int val)
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{
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int r, g, b, a;
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r = Convert5To8((val >> 11) & 0x1f);
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g = Convert6To8((val >> 5) & 0x3f);
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b = Convert5To8((val) & 0x1f);
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a = 0xFF;
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return float4(r, g, b, a) / 255.0;
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}
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float4 DecodePixel_IA8(int val)
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{
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int i = val & 0xFF;
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int a = val >> 8;
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return float4(i, i, i, a) / 255.0;
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}
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void main()
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{
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int src = int(round(texture(samp9, f_uv0).r * multiplier));
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src = int(texelFetch(samp10, src + texture_buffer_offset).r);
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src = ((src << 8) & 0xFF00) | (src >> 8);
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ocol0 = DECODE(src);
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}
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)GLSL";
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if (g_ActiveConfig.backend_info.bSupportsPaletteConversion)
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{
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if (!CompilePaletteShader(TLUTFormat::IA8, StringFromFormat(vertex_program, prefix, prefix),
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"#define DECODE DecodePixel_IA8" + palette_shader, geo_program))
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return false;
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if (!CompilePaletteShader(TLUTFormat::RGB565, StringFromFormat(vertex_program, prefix, prefix),
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"#define DECODE DecodePixel_RGB565" + palette_shader, geo_program))
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return false;
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if (!CompilePaletteShader(TLUTFormat::RGB5A3, StringFromFormat(vertex_program, prefix, prefix),
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"#define DECODE DecodePixel_RGB5A3" + palette_shader, geo_program))
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return false;
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}
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return true;
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}
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void TextureCache::DeleteShaders()
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{
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for (auto& it : m_efb_copy_programs)
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it.second.shader.Destroy();
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m_efb_copy_programs.clear();
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if (g_ActiveConfig.backend_info.bSupportsPaletteConversion)
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for (auto& shader : m_palette_shaders)
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shader.shader.Destroy();
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}
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void TextureCache::ConvertTexture(TCacheEntry* destination, TCacheEntry* source,
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const void* palette, TLUTFormat tlutfmt)
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{
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if (!g_ActiveConfig.backend_info.bSupportsPaletteConversion)
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return;
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_assert_(IsValidTLUTFormat(tlutfmt));
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const PaletteShader& palette_shader = m_palette_shaders[static_cast<int>(tlutfmt)];
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g_renderer->ResetAPIState();
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OGLTexture* source_texture = static_cast<OGLTexture*>(source->texture.get());
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OGLTexture* destination_texture = static_cast<OGLTexture*>(destination->texture.get());
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glActiveTexture(GL_TEXTURE9);
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glBindTexture(GL_TEXTURE_2D_ARRAY, source_texture->GetRawTexIdentifier());
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g_sampler_cache->BindNearestSampler(9);
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FramebufferManager::SetFramebuffer(destination_texture->GetFramebuffer());
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glViewport(0, 0, destination->GetWidth(), destination->GetHeight());
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palette_shader.shader.Bind();
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// C14 textures are currently unsupported
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int size = source->format == TextureFormat::I4 ? 32 : 512;
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auto buffer = m_palette_stream_buffer->Map(size);
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memcpy(buffer.first, palette, size);
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m_palette_stream_buffer->Unmap(size);
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glUniform1i(palette_shader.buffer_offset_uniform, buffer.second / 2);
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glUniform1f(palette_shader.multiplier_uniform,
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source->format == TextureFormat::I4 ? 15.0f : 255.0f);
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glUniform4f(palette_shader.copy_position_uniform, 0.0f, 0.0f,
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static_cast<float>(source->GetWidth()), static_cast<float>(source->GetHeight()));
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glActiveTexture(GL_TEXTURE10);
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glBindTexture(GL_TEXTURE_BUFFER, m_palette_resolv_texture);
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g_sampler_cache->BindNearestSampler(10);
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OpenGL_BindAttributelessVAO();
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glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
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FramebufferManager::SetFramebuffer(0);
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g_renderer->RestoreAPIState();
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}
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static const std::string decoding_vertex_shader = R"(
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void main()
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{
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vec2 rawpos = vec2(gl_VertexID&1, gl_VertexID&2);
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gl_Position = vec4(rawpos*2.0-1.0, 0.0, 1.0);
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}
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)";
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void TextureCache::CreateTextureDecodingResources()
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{
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static const GLenum gl_view_types[TextureConversionShader::BUFFER_FORMAT_COUNT] = {
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GL_R8UI, // BUFFER_FORMAT_R8_UINT
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GL_R16UI, // BUFFER_FORMAT_R16_UINT
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GL_RG32UI, // BUFFER_FORMAT_R32G32_UINT
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GL_RGBA8UI, // BUFFER_FORMAT_RGBA8_UINT
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};
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glGenTextures(TextureConversionShader::BUFFER_FORMAT_COUNT,
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m_texture_decoding_buffer_views.data());
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for (size_t i = 0; i < TextureConversionShader::BUFFER_FORMAT_COUNT; i++)
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{
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glBindTexture(GL_TEXTURE_BUFFER, m_texture_decoding_buffer_views[i]);
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glTexBuffer(GL_TEXTURE_BUFFER, gl_view_types[i], m_palette_stream_buffer->m_buffer);
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}
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}
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void TextureCache::DestroyTextureDecodingResources()
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{
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glDeleteTextures(TextureConversionShader::BUFFER_FORMAT_COUNT,
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m_texture_decoding_buffer_views.data());
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m_texture_decoding_buffer_views.fill(0);
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m_texture_decoding_program_info.clear();
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}
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bool TextureCache::SupportsGPUTextureDecode(TextureFormat format, TLUTFormat palette_format)
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{
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auto key = std::make_pair(static_cast<u32>(format), static_cast<u32>(palette_format));
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auto iter = m_texture_decoding_program_info.find(key);
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if (iter != m_texture_decoding_program_info.end())
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return iter->second.valid;
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TextureDecodingProgramInfo info;
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info.base_info = TextureConversionShader::GetDecodingShaderInfo(format);
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if (!info.base_info)
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{
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m_texture_decoding_program_info.emplace(key, info);
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return false;
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}
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std::string shader_source =
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TextureConversionShader::GenerateDecodingShader(format, palette_format, APIType::OpenGL);
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if (shader_source.empty())
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{
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m_texture_decoding_program_info.emplace(key, info);
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return false;
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}
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if (!ProgramShaderCache::CompileComputeShader(info.program, shader_source))
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{
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m_texture_decoding_program_info.emplace(key, info);
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return false;
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}
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info.uniform_dst_size = glGetUniformLocation(info.program.glprogid, "u_dst_size");
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info.uniform_src_size = glGetUniformLocation(info.program.glprogid, "u_src_size");
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info.uniform_src_offset = glGetUniformLocation(info.program.glprogid, "u_src_offset");
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info.uniform_src_row_stride = glGetUniformLocation(info.program.glprogid, "u_src_row_stride");
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info.uniform_palette_offset = glGetUniformLocation(info.program.glprogid, "u_palette_offset");
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info.valid = true;
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m_texture_decoding_program_info.emplace(key, info);
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return true;
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}
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void TextureCache::DecodeTextureOnGPU(TCacheEntry* entry, u32 dst_level, const u8* data,
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size_t data_size, TextureFormat format, u32 width, u32 height,
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u32 aligned_width, u32 aligned_height, u32 row_stride,
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const u8* palette, TLUTFormat palette_format)
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{
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auto key = std::make_pair(static_cast<u32>(format), static_cast<u32>(palette_format));
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auto iter = m_texture_decoding_program_info.find(key);
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if (iter == m_texture_decoding_program_info.end())
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return;
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#ifdef TIME_TEXTURE_DECODING
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GPUTimer timer;
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#endif
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// Copy to GPU-visible buffer, aligned to the data type.
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auto info = iter->second;
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u32 bytes_per_buffer_elem =
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TextureConversionShader::GetBytesPerBufferElement(info.base_info->buffer_format);
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// Only copy palette if it is required.
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bool has_palette = info.base_info->palette_size > 0;
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u32 total_upload_size = static_cast<u32>(data_size);
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u32 palette_offset = total_upload_size;
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if (has_palette)
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{
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// Align to u16.
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if ((total_upload_size % sizeof(u16)) != 0)
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{
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total_upload_size++;
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palette_offset++;
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}
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total_upload_size += info.base_info->palette_size;
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}
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// Allocate space in stream buffer, and copy texture + palette across.
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auto buffer = m_palette_stream_buffer->Map(total_upload_size, bytes_per_buffer_elem);
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memcpy(buffer.first, data, data_size);
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if (has_palette)
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memcpy(buffer.first + palette_offset, palette, info.base_info->palette_size);
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m_palette_stream_buffer->Unmap(total_upload_size);
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info.program.Bind();
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// Calculate stride in buffer elements
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u32 row_stride_in_elements = row_stride / bytes_per_buffer_elem;
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u32 offset_in_elements = buffer.second / bytes_per_buffer_elem;
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u32 palette_offset_in_elements = (buffer.second + palette_offset) / sizeof(u16);
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if (info.uniform_dst_size >= 0)
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glUniform2ui(info.uniform_dst_size, width, height);
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if (info.uniform_src_size >= 0)
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glUniform2ui(info.uniform_src_size, aligned_width, aligned_height);
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if (info.uniform_src_offset >= 0)
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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, m_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, m_palette_resolv_texture);
|
|
}
|
|
|
|
auto dispatch_groups =
|
|
TextureConversionShader::GetDispatchCount(info.base_info, aligned_width, aligned_height);
|
|
glBindImageTexture(0, static_cast<OGLTexture*>(entry->texture.get())->GetRawTexIdentifier(),
|
|
dst_level, GL_TRUE, 0, GL_WRITE_ONLY, GL_RGBA8);
|
|
glDispatchCompute(dispatch_groups.first, dispatch_groups.second, 1);
|
|
glMemoryBarrier(GL_TEXTURE_UPDATE_BARRIER_BIT);
|
|
|
|
OGLTexture::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
|
|
}
|
|
|
|
void TextureCache::CopyEFBToCacheEntry(TCacheEntry* entry, bool is_depth_copy,
|
|
const EFBRectangle& src_rect, bool scale_by_half,
|
|
unsigned int cbuf_id, const float* colmat,
|
|
EFBCopyFormat dst_format, bool is_intensity)
|
|
{
|
|
auto* destination_texture = static_cast<OGLTexture*>(entry->texture.get());
|
|
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(src_rect) :
|
|
FramebufferManager::ResolveAndGetRenderTarget(src_rect);
|
|
|
|
FramebufferManager::SetFramebuffer(destination_texture->GetFramebuffer());
|
|
|
|
OpenGL_BindAttributelessVAO();
|
|
|
|
glActiveTexture(GL_TEXTURE9);
|
|
glBindTexture(GL_TEXTURE_2D_ARRAY, read_texture);
|
|
if (scale_by_half)
|
|
g_sampler_cache->BindLinearSampler(9);
|
|
else
|
|
g_sampler_cache->BindNearestSampler(9);
|
|
|
|
glViewport(0, 0, destination_texture->GetConfig().width, destination_texture->GetConfig().height);
|
|
|
|
auto uid = GetTextureConverterShaderUid(dst_format, is_depth_copy, is_intensity, scale_by_half);
|
|
|
|
auto it = m_efb_copy_programs.emplace(uid, EFBCopyShader());
|
|
EFBCopyShader& shader = it.first->second;
|
|
bool created = it.second;
|
|
|
|
if (created)
|
|
{
|
|
ShaderCode code = GenerateTextureConverterShaderCode(APIType::OpenGL, uid.GetUidData());
|
|
|
|
std::string geo_program = "";
|
|
char prefix = 'f';
|
|
if (g_ActiveConfig.stereo_mode != StereoMode::Off)
|
|
{
|
|
geo_program = geometry_program;
|
|
prefix = 'v';
|
|
}
|
|
|
|
ProgramShaderCache::CompileShader(shader.shader,
|
|
StringFromFormat(vertex_program, prefix, prefix),
|
|
code.GetBuffer(), geo_program);
|
|
|
|
shader.position_uniform = glGetUniformLocation(shader.shader.glprogid, "copy_position");
|
|
}
|
|
|
|
shader.shader.Bind();
|
|
|
|
TargetRectangle R = g_renderer->ConvertEFBRectangle(src_rect);
|
|
glUniform4f(shader.position_uniform, 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();
|
|
}
|
|
}
|