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-rw-r--r--Userland/Libraries/LibSoftGPU/CMakeLists.txt1
-rw-r--r--Userland/Libraries/LibSoftGPU/Image.cpp44
-rw-r--r--Userland/Libraries/LibSoftGPU/Image.h68
-rw-r--r--Userland/Libraries/LibSoftGPU/ImageFormat.h122
4 files changed, 235 insertions, 0 deletions
diff --git a/Userland/Libraries/LibSoftGPU/CMakeLists.txt b/Userland/Libraries/LibSoftGPU/CMakeLists.txt
index 5fab5680d7..b2870d3cb2 100644
--- a/Userland/Libraries/LibSoftGPU/CMakeLists.txt
+++ b/Userland/Libraries/LibSoftGPU/CMakeLists.txt
@@ -2,6 +2,7 @@ set(SOURCES
Clipper.cpp
DepthBuffer.cpp
Device.cpp
+ Image.cpp
)
serenity_lib(LibSoftGPU softgpu)
diff --git a/Userland/Libraries/LibSoftGPU/Image.cpp b/Userland/Libraries/LibSoftGPU/Image.cpp
new file mode 100644
index 0000000000..147e7d9a53
--- /dev/null
+++ b/Userland/Libraries/LibSoftGPU/Image.cpp
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibSoftGPU/Image.h>
+
+namespace SoftGPU {
+
+Image::Image(ImageFormat format, unsigned width, unsigned height, unsigned depth, unsigned levels, unsigned layers)
+ : m_format(format)
+ , m_width(width)
+ , m_height(height)
+ , m_depth(depth)
+ , m_num_layers(layers)
+{
+ VERIFY(width > 0);
+ VERIFY(height > 0);
+ VERIFY(depth > 0);
+ VERIFY(levels > 0);
+ VERIFY(layers > 0);
+
+ m_mipmap_sizes.append({ width, height, depth });
+ m_mipmap_offsets.append(0);
+
+ m_mipchain_size += width * height * depth * element_size(format);
+
+ while (--levels && (width > 1 || height > 1 || depth > 1)) {
+ width = max(width / 2, 1);
+ height = max(height / 2, 1);
+ depth = max(depth / 2, 1);
+ m_mipmap_sizes.append({ width, height, depth });
+ m_mipmap_offsets.append(m_mipchain_size);
+
+ m_mipchain_size += width * height * depth * element_size(format);
+ }
+
+ m_num_levels = m_mipmap_sizes.size();
+
+ m_data.resize(m_mipchain_size * m_num_layers);
+}
+
+}
diff --git a/Userland/Libraries/LibSoftGPU/Image.h b/Userland/Libraries/LibSoftGPU/Image.h
new file mode 100644
index 0000000000..f46d3f601c
--- /dev/null
+++ b/Userland/Libraries/LibSoftGPU/Image.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/RefCounted.h>
+#include <AK/Vector.h>
+#include <LibGfx/Vector3.h>
+#include <LibGfx/Vector4.h>
+#include <LibSoftGPU/ImageFormat.h>
+
+namespace SoftGPU {
+
+class Image final : public RefCounted<Image> {
+public:
+ Image(ImageFormat format, unsigned width, unsigned height, unsigned depth, unsigned levels, unsigned layers);
+
+ ImageFormat format() const { return m_format; }
+ unsigned width() const { return m_width; }
+ unsigned height() const { return m_height; }
+ unsigned depth() const { return m_depth; }
+ unsigned level_width(unsigned level) const { return m_mipmap_sizes[level].x(); }
+ unsigned level_height(unsigned level) const { return m_mipmap_sizes[level].y(); }
+ unsigned level_depth(unsigned level) const { return m_mipmap_sizes[level].z(); }
+ unsigned num_levels() const { return m_num_levels; }
+ unsigned num_layers() const { return m_num_layers; }
+
+ FloatVector4 texel(unsigned layer, unsigned level, unsigned x, unsigned y, unsigned z) const
+ {
+ return unpack_color(texel_pointer(layer, level, x, y, z), m_format);
+ }
+
+ void set_texel(unsigned layer, unsigned level, unsigned x, unsigned y, unsigned z, FloatVector4 const& color)
+ {
+ pack_color(color, texel_pointer(layer, level, x, y, z), m_format);
+ }
+
+private:
+ void const* texel_pointer(unsigned layer, unsigned level, unsigned x, unsigned y, unsigned z) const
+ {
+ auto size = m_mipmap_sizes[level];
+ return &m_data[m_mipchain_size * layer + m_mipmap_offsets[level] + (z * size.x() * size.y() + y * size.x() + x) * element_size(m_format)];
+ }
+
+ void* texel_pointer(unsigned layer, unsigned level, unsigned x, unsigned y, unsigned z)
+ {
+ auto size = m_mipmap_sizes[level];
+ return &m_data[m_mipchain_size * layer + m_mipmap_offsets[level] + (z * size.x() * size.y() + y * size.x() + x) * element_size(m_format)];
+ }
+
+private:
+ ImageFormat m_format { ImageFormat::RGBA8888 };
+ unsigned m_width { 0 };
+ unsigned m_height { 0 };
+ unsigned m_depth { 0 };
+ unsigned m_num_levels { 0 };
+ unsigned m_num_layers { 0 };
+
+ size_t m_mipchain_size { 0 };
+ Vector<size_t, 16> m_mipmap_offsets;
+ Vector<Vector3<unsigned>, 16> m_mipmap_sizes;
+ Vector<u8> m_data;
+};
+
+}
diff --git a/Userland/Libraries/LibSoftGPU/ImageFormat.h b/Userland/Libraries/LibSoftGPU/ImageFormat.h
new file mode 100644
index 0000000000..933627a10b
--- /dev/null
+++ b/Userland/Libraries/LibSoftGPU/ImageFormat.h
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibGfx/Vector4.h>
+
+namespace SoftGPU {
+
+enum class ImageFormat {
+ RGB565,
+ RGB888,
+ BGR888,
+ RGBA8888,
+ BGRA8888,
+};
+
+inline static constexpr size_t element_size(ImageFormat format)
+{
+ switch (format) {
+ case ImageFormat::RGB565:
+ return 2;
+ case ImageFormat::RGB888:
+ case ImageFormat::BGR888:
+ return 3;
+ case ImageFormat::RGBA8888:
+ case ImageFormat::BGRA8888:
+ return 4;
+ default:
+ VERIFY_NOT_REACHED();
+ }
+}
+
+inline static FloatVector4 unpack_color(void const* ptr, ImageFormat format)
+{
+ switch (format) {
+ case ImageFormat::RGB888: {
+ auto rgb = reinterpret_cast<u8 const*>(ptr);
+ return {
+ rgb[0] / 255.f,
+ rgb[1] / 255.f,
+ rgb[2] / 255.f,
+ 1.0f
+ };
+ }
+ case ImageFormat::BGR888: {
+ auto bgr = reinterpret_cast<u8 const*>(ptr);
+ return {
+ bgr[2] / 255.f,
+ bgr[1] / 255.f,
+ bgr[0] / 255.f,
+ 1.0f
+ };
+ }
+ case ImageFormat::RGBA8888: {
+ auto rgba = *reinterpret_cast<u32 const*>(ptr);
+ return {
+ (rgba & 0xff) / 255.f,
+ ((rgba >> 8) & 0xff) / 255.f,
+ ((rgba >> 16) & 0xff) / 255.f,
+ ((rgba >> 24) & 0xff) / 255.f
+ };
+ }
+ case ImageFormat::BGRA8888: {
+ auto bgra = *reinterpret_cast<u32 const*>(ptr);
+ return {
+ ((bgra >> 16) & 0xff) / 255.f,
+ ((bgra >> 8) & 0xff) / 255.f,
+ (bgra & 0xff) / 255.f,
+ ((bgra >> 24) & 0xff) / 255.f
+ };
+ }
+ case ImageFormat::RGB565: {
+ auto rgb = *reinterpret_cast<u16 const*>(ptr);
+ return {
+ ((rgb >> 11) & 0x1f) / 31.f,
+ ((rgb >> 5) & 0x3f) / 63.f,
+ (rgb & 0x1f) / 31.f,
+ 1.0f
+ };
+ }
+ default:
+ VERIFY_NOT_REACHED();
+ }
+}
+
+inline static void pack_color(FloatVector4 const& color, void* ptr, ImageFormat format)
+{
+ auto r = static_cast<u8>(clamp(color.x(), 0.0f, 1.0f) * 255);
+ auto g = static_cast<u8>(clamp(color.y(), 0.0f, 1.0f) * 255);
+ auto b = static_cast<u8>(clamp(color.z(), 0.0f, 1.0f) * 255);
+ auto a = static_cast<u8>(clamp(color.w(), 0.0f, 1.0f) * 255);
+
+ switch (format) {
+ case ImageFormat::RGB888:
+ reinterpret_cast<u8*>(ptr)[0] = r;
+ reinterpret_cast<u8*>(ptr)[1] = g;
+ reinterpret_cast<u8*>(ptr)[2] = b;
+ return;
+ case ImageFormat::BGR888:
+ reinterpret_cast<u8*>(ptr)[2] = b;
+ reinterpret_cast<u8*>(ptr)[1] = g;
+ reinterpret_cast<u8*>(ptr)[0] = r;
+ return;
+ case ImageFormat::RGBA8888:
+ *reinterpret_cast<u32*>(ptr) = r | (g << 8) | (b << 16) | (a << 24);
+ return;
+ case ImageFormat::BGRA8888:
+ *reinterpret_cast<u32*>(ptr) = b | (g << 8) | (r << 16) | (a << 24);
+ return;
+ case ImageFormat::RGB565:
+ *reinterpret_cast<u16*>(ptr) = (r & 0x1f) | ((g & 0x3f) << 5) | ((b & 0x1f) << 11);
+ return;
+ default:
+ VERIFY_NOT_REACHED();
+ }
+}
+
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 13:27:53 +0000