2020-04-03 05:42:50 +02:00
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// Copyright 2020 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include <climits>
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#include <boost/icl/interval.hpp>
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#include "common/assert.h"
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#include "common/math_util.h"
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#include "core/hw/gpu.h"
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#include "video_core/regs_framebuffer.h"
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#include "video_core/regs_texturing.h"
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namespace OpenGL {
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struct CachedSurface;
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using Surface = std::shared_ptr<CachedSurface>;
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using SurfaceInterval = boost::icl::right_open_interval<PAddr>;
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struct SurfaceParams {
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private:
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static constexpr std::array<unsigned int, 18> BPP_TABLE = {
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32, // RGBA8
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24, // RGB8
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16, // RGB5A1
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16, // RGB565
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16, // RGBA4
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16, // IA8
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16, // RG8
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8, // I8
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8, // A8
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8, // IA4
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4, // I4
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4, // A4
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4, // ETC1
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8, // ETC1A4
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16, // D16
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0,
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24, // D24
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32, // D24S8
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};
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public:
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enum class PixelFormat {
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// First 5 formats are shared between textures and color buffers
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RGBA8 = 0,
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RGB8 = 1,
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RGB5A1 = 2,
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RGB565 = 3,
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RGBA4 = 4,
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// Texture-only formats
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IA8 = 5,
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RG8 = 6,
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I8 = 7,
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A8 = 8,
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IA4 = 9,
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I4 = 10,
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A4 = 11,
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ETC1 = 12,
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ETC1A4 = 13,
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// Depth buffer-only formats
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D16 = 14,
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// gap
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D24 = 16,
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D24S8 = 17,
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Invalid = 255,
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};
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enum class SurfaceType {
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Color = 0,
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Texture = 1,
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Depth = 2,
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DepthStencil = 3,
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Fill = 4,
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Invalid = 5
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};
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static constexpr unsigned int GetFormatBpp(PixelFormat format) {
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const auto format_idx = static_cast<std::size_t>(format);
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DEBUG_ASSERT_MSG(format_idx < BPP_TABLE.size(), "Invalid pixel format {}", format_idx);
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return BPP_TABLE[format_idx];
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}
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unsigned int GetFormatBpp() const {
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return GetFormatBpp(pixel_format);
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}
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2020-04-07 16:12:32 +02:00
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static std::string_view PixelFormatAsString(PixelFormat format) {
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switch (format) {
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case PixelFormat::RGBA8:
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return "RGBA8";
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case PixelFormat::RGB8:
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return "RGB8";
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case PixelFormat::RGB5A1:
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return "RGB5A1";
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case PixelFormat::RGB565:
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return "RGB565";
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case PixelFormat::RGBA4:
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return "RGBA4";
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case PixelFormat::IA8:
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return "IA8";
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case PixelFormat::RG8:
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return "RG8";
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case PixelFormat::I8:
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return "I8";
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case PixelFormat::A8:
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return "A8";
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case PixelFormat::IA4:
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return "IA4";
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case PixelFormat::I4:
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return "I4";
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case PixelFormat::A4:
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return "A4";
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case PixelFormat::ETC1:
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return "ETC1";
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case PixelFormat::ETC1A4:
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return "ETC1A4";
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case PixelFormat::D16:
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return "D16";
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case PixelFormat::D24:
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return "D24";
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case PixelFormat::D24S8:
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return "D24S8";
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default:
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return "Not a real pixel format";
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}
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}
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2020-04-03 05:42:50 +02:00
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static PixelFormat PixelFormatFromTextureFormat(Pica::TexturingRegs::TextureFormat format) {
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return ((unsigned int)format < 14) ? (PixelFormat)format : PixelFormat::Invalid;
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}
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static PixelFormat PixelFormatFromColorFormat(Pica::FramebufferRegs::ColorFormat format) {
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return ((unsigned int)format < 5) ? (PixelFormat)format : PixelFormat::Invalid;
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}
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static PixelFormat PixelFormatFromDepthFormat(Pica::FramebufferRegs::DepthFormat format) {
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return ((unsigned int)format < 4) ? (PixelFormat)((unsigned int)format + 14)
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: PixelFormat::Invalid;
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}
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static PixelFormat PixelFormatFromGPUPixelFormat(GPU::Regs::PixelFormat format) {
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switch (format) {
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// RGB565 and RGB5A1 are switched in PixelFormat compared to ColorFormat
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case GPU::Regs::PixelFormat::RGB565:
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return PixelFormat::RGB565;
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case GPU::Regs::PixelFormat::RGB5A1:
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return PixelFormat::RGB5A1;
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default:
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return ((unsigned int)format < 5) ? (PixelFormat)format : PixelFormat::Invalid;
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}
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}
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static bool CheckFormatsBlittable(PixelFormat pixel_format_a, PixelFormat pixel_format_b) {
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SurfaceType a_type = GetFormatType(pixel_format_a);
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SurfaceType b_type = GetFormatType(pixel_format_b);
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if ((a_type == SurfaceType::Color || a_type == SurfaceType::Texture) &&
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(b_type == SurfaceType::Color || b_type == SurfaceType::Texture)) {
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return true;
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}
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if (a_type == SurfaceType::Depth && b_type == SurfaceType::Depth) {
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return true;
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}
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if (a_type == SurfaceType::DepthStencil && b_type == SurfaceType::DepthStencil) {
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return true;
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}
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return false;
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}
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static constexpr SurfaceType GetFormatType(PixelFormat pixel_format) {
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if ((unsigned int)pixel_format < 5) {
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return SurfaceType::Color;
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}
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if ((unsigned int)pixel_format < 14) {
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return SurfaceType::Texture;
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}
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if (pixel_format == PixelFormat::D16 || pixel_format == PixelFormat::D24) {
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return SurfaceType::Depth;
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}
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if (pixel_format == PixelFormat::D24S8) {
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return SurfaceType::DepthStencil;
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}
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return SurfaceType::Invalid;
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}
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/// Update the params "size", "end" and "type" from the already set "addr", "width", "height"
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/// and "pixel_format"
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void UpdateParams() {
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if (stride == 0) {
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stride = width;
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}
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type = GetFormatType(pixel_format);
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size = !is_tiled ? BytesInPixels(stride * (height - 1) + width)
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: BytesInPixels(stride * 8 * (height / 8 - 1) + width * 8);
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end = addr + size;
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}
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SurfaceInterval GetInterval() const {
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return SurfaceInterval(addr, end);
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}
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// Returns the outer rectangle containing "interval"
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SurfaceParams FromInterval(SurfaceInterval interval) const;
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SurfaceInterval GetSubRectInterval(Common::Rectangle<u32> unscaled_rect) const;
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// Returns the region of the biggest valid rectange within interval
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SurfaceInterval GetCopyableInterval(const Surface& src_surface) const;
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u32 GetScaledWidth() const {
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return width * res_scale;
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}
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u32 GetScaledHeight() const {
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return height * res_scale;
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}
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Common::Rectangle<u32> GetRect() const {
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return {0, height, width, 0};
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}
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Common::Rectangle<u32> GetScaledRect() const {
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return {0, GetScaledHeight(), GetScaledWidth(), 0};
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}
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u32 PixelsInBytes(u32 size) const {
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return size * CHAR_BIT / GetFormatBpp(pixel_format);
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}
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u32 BytesInPixels(u32 pixels) const {
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return pixels * GetFormatBpp(pixel_format) / CHAR_BIT;
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}
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bool ExactMatch(const SurfaceParams& other_surface) const;
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bool CanSubRect(const SurfaceParams& sub_surface) const;
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bool CanExpand(const SurfaceParams& expanded_surface) const;
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bool CanTexCopy(const SurfaceParams& texcopy_params) const;
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Common::Rectangle<u32> GetSubRect(const SurfaceParams& sub_surface) const;
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Common::Rectangle<u32> GetScaledSubRect(const SurfaceParams& sub_surface) const;
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PAddr addr = 0;
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PAddr end = 0;
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u32 size = 0;
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u32 width = 0;
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u32 height = 0;
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u32 stride = 0;
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u16 res_scale = 1;
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bool is_tiled = false;
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PixelFormat pixel_format = PixelFormat::Invalid;
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SurfaceType type = SurfaceType::Invalid;
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};
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} // namespace OpenGL
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