renderer: refactor Texture, Framebuffer and Renderbuffer (#13437)

Part 1 of the renderer refactors

1 files changed, 223 insertions, 0 deletions

diff --git a/src/render/gl/GLTexture.cpp b/src/render/gl/GLTexture.cpp
new file mode 100644
index 00000000..6a1fb172
--- /dev/null
+++ b/src/render/gl/GLTexture.cpp
@@ -0,0 +1,223 @@
+#include "GLTexture.hpp"
+#include "../Renderer.hpp"
+#include "../../Compositor.hpp"
+#include "../../helpers/Format.hpp"
+#include "render/Texture.hpp"
+#include <cstring>
+
+CGLTexture::CGLTexture(bool opaque) {
+    m_opaque = opaque;
+}
+
+CGLTexture::~CGLTexture() {
+    if (!g_pCompositor || g_pCompositor->m_isShuttingDown || !g_pHyprRenderer)
+        return;
+
+    g_pHyprRenderer->makeEGLCurrent();
+    if (m_texID) {
+        GLCALL(glDeleteTextures(1, &m_texID));
+        m_texID = 0;
+    }
+
+    if (m_eglImage)
+        g_pHyprOpenGL->m_proc.eglDestroyImageKHR(g_pHyprOpenGL->m_eglDisplay, m_eglImage);
+    m_eglImage = nullptr;
+    m_cachedStates.fill(std::nullopt);
+}
+
+CGLTexture::CGLTexture(uint32_t drmFormat, uint8_t* pixels, uint32_t stride, const Vector2D& size_, bool keepDataCopy, bool opaque) :
+    ITexture(drmFormat, pixels, stride, size_, keepDataCopy, opaque) {
+
+    g_pHyprRenderer->makeEGLCurrent();
+
+    const auto format = NFormatUtils::getPixelFormatFromDRM(drmFormat);
+    ASSERT(format);
+
+    m_type          = format->withAlpha ? TEXTURE_RGBA : TEXTURE_RGBX;
+    m_size          = size_;
+    m_isSynchronous = true;
+    m_target        = GL_TEXTURE_2D;
+    allocate(size_);
+    bind();
+    setTexParameter(GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    setTexParameter(GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+    if (format->swizzle.has_value())
+        swizzle(format->swizzle.value());
+
+    bool alignmentChanged = false;
+    if (format->bytesPerBlock != 4) {
+        const GLint alignment = (stride % 4 == 0) ? 4 : 1;
+        GLCALL(glPixelStorei(GL_UNPACK_ALIGNMENT, alignment));
+        alignmentChanged = true;
+    }
+
+    GLCALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride / format->bytesPerBlock));
+    GLCALL(glTexImage2D(GL_TEXTURE_2D, 0, format->glInternalFormat ? format->glInternalFormat : format->glFormat, size_.x, size_.y, 0, format->glFormat, format->glType, pixels));
+    GLCALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0));
+    if (alignmentChanged)
+        GLCALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 4));
+
+    unbind();
+}
+
+CGLTexture::CGLTexture(const Aquamarine::SDMABUFAttrs& attrs, void* image, bool opaque) {
+    m_opaque = opaque;
+    if (!g_pHyprOpenGL->m_proc.glEGLImageTargetTexture2DOES) {
+        Log::logger->log(Log::ERR, "Cannot create a dmabuf texture: no glEGLImageTargetTexture2DOES");
+        return;
+    }
+
+    m_opaque = NFormatUtils::isFormatOpaque(attrs.format);
+
+    // #TODO external only formats should be external aswell.
+    // also needs a seperate color shader.
+    /*if (NFormatUtils::isFormatYUV(attrs.format)) {
+        m_target = GL_TEXTURE_EXTERNAL_OES;
+        m_type   = TEXTURE_EXTERNAL;
+    } else {*/
+    m_target = GL_TEXTURE_2D;
+    m_type   = NFormatUtils::isFormatOpaque(attrs.format) ? TEXTURE_RGBX : TEXTURE_RGBA;
+    //}
+
+    allocate(attrs.size);
+    m_eglImage = image;
+
+    bind();
+    setTexParameter(GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    setTexParameter(GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    GLCALL(g_pHyprOpenGL->m_proc.glEGLImageTargetTexture2DOES(m_target, image));
+    unbind();
+}
+
+CGLTexture::CGLTexture(std::span<const float> lut3D, size_t N) : ITexture(lut3D, N), m_target(GL_TEXTURE_3D) {
+    allocate({});
+    bind();
+
+    GLCALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 1));
+    setTexParameter(GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    setTexParameter(GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    setTexParameter(GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    setTexParameter(GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    setTexParameter(GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
+
+    // Expand RGB->RGBA on upload (alpha=1)
+    std::vector<float> rgba;
+    rgba.resize(N * N * N * 4);
+    for (size_t i = 0, j = 0; i < N * N * N; ++i, j += 3) {
+        rgba[i * 4 + 0] = lut3D[j + 0];
+        rgba[i * 4 + 1] = lut3D[j + 1];
+        rgba[i * 4 + 2] = lut3D[j + 2];
+        rgba[i * 4 + 3] = 1.F;
+    }
+
+    GLCALL(glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA16F, N, N, N, 0, GL_RGBA, GL_FLOAT, rgba.data()));
+
+    unbind();
+}
+
+void CGLTexture::update(uint32_t drmFormat, uint8_t* pixels, uint32_t stride, const CRegion& damage) {
+    if (damage.empty())
+        return;
+
+    g_pHyprRenderer->makeEGLCurrent();
+
+    const auto format = NFormatUtils::getPixelFormatFromDRM(drmFormat);
+    ASSERT(format);
+
+    bind();
+
+    if (format->swizzle.has_value())
+        swizzle(format->swizzle.value());
+
+    bool alignmentChanged = false;
+    if (format->bytesPerBlock != 4) {
+        const GLint alignment = (stride % 4 == 0) ? 4 : 1;
+        GLCALL(glPixelStorei(GL_UNPACK_ALIGNMENT, alignment));
+        alignmentChanged = true;
+    }
+
+    GLCALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride / format->bytesPerBlock));
+
+    damage.copy().intersect(CBox{{}, m_size}).forEachRect([&format, &pixels](const auto& rect) {
+        GLCALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, rect.x1));
+        GLCALL(glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, rect.y1));
+
+        int width  = rect.x2 - rect.x1;
+        int height = rect.y2 - rect.y1;
+        GLCALL(glTexSubImage2D(GL_TEXTURE_2D, 0, rect.x1, rect.y1, width, height, format->glFormat, format->glType, pixels));
+    });
+
+    if (alignmentChanged)
+        GLCALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 4));
+
+    GLCALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0));
+    GLCALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0));
+    GLCALL(glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0));
+
+    unbind();
+
+    if (m_keepDataCopy) {
+        m_dataCopy.resize(stride * m_size.y);
+        memcpy(m_dataCopy.data(), pixels, stride * m_size.y);
+    }
+}
+
+void CGLTexture::allocate(const Vector2D& size, uint32_t drmFormat) {
+    if (!m_texID)
+        GLCALL(glGenTextures(1, &m_texID));
+    m_size      = size;
+    m_drmFormat = drmFormat;
+}
+
+void CGLTexture::bind() {
+    GLCALL(glBindTexture(m_target, m_texID));
+}
+
+void CGLTexture::unbind() {
+    GLCALL(glBindTexture(m_target, 0));
+}
+
+bool CGLTexture::ok() {
+    return m_texID > 0;
+}
+
+bool CGLTexture::isDMA() {
+    return m_eglImage;
+}
+
+constexpr std::optional<size_t> CGLTexture::getCacheStateIndex(GLenum pname) {
+    switch (pname) {
+        case GL_TEXTURE_WRAP_S: return TEXTURE_PAR_WRAP_S;
+        case GL_TEXTURE_WRAP_T: return TEXTURE_PAR_WRAP_T;
+        case GL_TEXTURE_MAG_FILTER: return TEXTURE_PAR_MAG_FILTER;
+        case GL_TEXTURE_MIN_FILTER: return TEXTURE_PAR_MIN_FILTER;
+        case GL_TEXTURE_SWIZZLE_R: return TEXTURE_PAR_SWIZZLE_R;
+        case GL_TEXTURE_SWIZZLE_B: return TEXTURE_PAR_SWIZZLE_B;
+        default: return std::nullopt;
+    }
+}
+
+void CGLTexture::setTexParameter(GLenum pname, GLint param) {
+    const auto cacheIndex = getCacheStateIndex(pname);
+
+    if (!cacheIndex) {
+        GLCALL(glTexParameteri(m_target, pname, param));
+        return;
+    }
+
+    const auto idx = cacheIndex.value();
+
+    if (m_cachedStates[idx] == param)
+        return;
+
+    m_cachedStates[idx] = param;
+    GLCALL(glTexParameteri(m_target, pname, param));
+}
+
+void CGLTexture::swizzle(const std::array<GLint, 4>& colors) {
+    setTexParameter(GL_TEXTURE_SWIZZLE_R, colors.at(0));
+    setTexParameter(GL_TEXTURE_SWIZZLE_G, colors.at(1));
+    setTexParameter(GL_TEXTURE_SWIZZLE_B, colors.at(2));
+    setTexParameter(GL_TEXTURE_SWIZZLE_A, colors.at(3));
+}