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build(linux): generate glad sources at compile time (#4798)

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Co-authored-by: Conn O'Griofa <connogriofa@gmail.com>
This commit is contained in:
David Lane
2026-03-15 21:21:41 -04:00
committed by GitHub
parent 0bbaa2db7c
commit ea201155f4
28 changed files with 384 additions and 7283 deletions
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91
src/platform/linux/graphics.cpp
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@@ -32,6 +32,12 @@ using namespace std::literals;
namespace gl {
GladGLContext ctx;
static PFNGLEGLIMAGETARGETTEXTURE2DOESPROC egl_image_target_texture_2d_fn = nullptr;
PFNGLEGLIMAGETARGETTEXTURE2DOESPROC egl_image_target_texture_2d() {
return egl_image_target_texture_2d_fn;
}
void drain_errors(const std::string_view &prefix) {
GLenum err;
while ((err = ctx.GetError()) != GL_NO_ERROR) {
@@ -297,28 +303,6 @@ namespace gbm {
} // namespace gbm
namespace egl {
constexpr auto EGL_LINUX_DMA_BUF_EXT = 0x3270;
constexpr auto EGL_LINUX_DRM_FOURCC_EXT = 0x3271;
constexpr auto EGL_DMA_BUF_PLANE0_FD_EXT = 0x3272;
constexpr auto EGL_DMA_BUF_PLANE0_OFFSET_EXT = 0x3273;
constexpr auto EGL_DMA_BUF_PLANE0_PITCH_EXT = 0x3274;
constexpr auto EGL_DMA_BUF_PLANE1_FD_EXT = 0x3275;
constexpr auto EGL_DMA_BUF_PLANE1_OFFSET_EXT = 0x3276;
constexpr auto EGL_DMA_BUF_PLANE1_PITCH_EXT = 0x3277;
constexpr auto EGL_DMA_BUF_PLANE2_FD_EXT = 0x3278;
constexpr auto EGL_DMA_BUF_PLANE2_OFFSET_EXT = 0x3279;
constexpr auto EGL_DMA_BUF_PLANE2_PITCH_EXT = 0x327A;
constexpr auto EGL_DMA_BUF_PLANE3_FD_EXT = 0x3440;
constexpr auto EGL_DMA_BUF_PLANE3_OFFSET_EXT = 0x3441;
constexpr auto EGL_DMA_BUF_PLANE3_PITCH_EXT = 0x3442;
constexpr auto EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT = 0x3443;
constexpr auto EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT = 0x3444;
constexpr auto EGL_DMA_BUF_PLANE1_MODIFIER_LO_EXT = 0x3445;
constexpr auto EGL_DMA_BUF_PLANE1_MODIFIER_HI_EXT = 0x3446;
constexpr auto EGL_DMA_BUF_PLANE2_MODIFIER_LO_EXT = 0x3447;
constexpr auto EGL_DMA_BUF_PLANE2_MODIFIER_HI_EXT = 0x3448;
constexpr auto EGL_DMA_BUF_PLANE3_MODIFIER_LO_EXT = 0x3449;
constexpr auto EGL_DMA_BUF_PLANE3_MODIFIER_HI_EXT = 0x344A;
bool fail() {
return eglGetError() != EGL_SUCCESS;
@@ -328,10 +312,6 @@ namespace egl {
* @memberof egl::display_t
*/
display_t make_display(std::variant<gbm::gbm_t::pointer, wl_display *, _XDisplay *> native_display) {
constexpr auto EGL_PLATFORM_GBM_MESA = 0x31D7;
constexpr auto EGL_PLATFORM_WAYLAND_KHR = 0x31D8;
constexpr auto EGL_PLATFORM_X11_KHR = 0x31D5;
int egl_platform;
void *native_display_p;
@@ -354,12 +334,20 @@ namespace egl {
}
// native_display.left() equals native_display.right()
display_t display = eglGetPlatformDisplay(egl_platform, native_display_p, nullptr);
EGLDisplay raw_display = EGL_NO_DISPLAY;
if (fail()) {
BOOST_LOG(error) << "Couldn't open EGL display: ["sv << util::hex(eglGetError()).to_string_view() << ']';
if (eglGetPlatformDisplayEXT) {
raw_display = eglGetPlatformDisplayEXT(egl_platform, native_display_p, nullptr);
} else if (eglGetPlatformDisplay) {
raw_display = eglGetPlatformDisplay(egl_platform, native_display_p, nullptr);
}
if (raw_display == EGL_NO_DISPLAY) {
BOOST_LOG(error) << "Couldn't open EGL display: ["sv
<< util::hex(eglGetError()).to_string_view() << ']';
return nullptr;
}
display_t display {raw_display};
int major;
int minor;
@@ -368,6 +356,11 @@ namespace egl {
return nullptr;
}
if (!gladLoaderLoadEGL(display.get())) {
BOOST_LOG(error) << "Failed to reload EGL for initialized display"sv;
return nullptr;
}
const char *extension_st = eglQueryString(display.get(), EGL_EXTENSIONS);
const char *version = eglQueryString(display.get(), EGL_VERSION);
const char *vendor = eglQueryString(display.get(), EGL_VENDOR);
@@ -435,10 +428,28 @@ namespace egl {
return std::nullopt;
}
BOOST_LOG(debug) << "GL: vendor: "sv << gl::ctx.GetString(GL_VENDOR);
BOOST_LOG(debug) << "GL: renderer: "sv << gl::ctx.GetString(GL_RENDERER);
BOOST_LOG(debug) << "GL: version: "sv << gl::ctx.GetString(GL_VERSION);
BOOST_LOG(debug) << "GL: shader: "sv << gl::ctx.GetString(GL_SHADING_LANGUAGE_VERSION);
gl::egl_image_target_texture_2d_fn =
(gl::PFNGLEGLIMAGETARGETTEXTURE2DOESPROC) (GLADapiproc) eglGetProcAddress("glEGLImageTargetTexture2DOES");
if (!gl::egl_image_target_texture_2d_fn) {
BOOST_LOG(warning) << "GL: glEGLImageTargetTexture2DOES not available; DMA-BUF import will fail"sv;
}
// GetString returns const GLubyte* (unsigned char*); convert to std::string safely (avoids sonar cpp:S6996).
auto gl_string = [](const GLubyte *s) {
std::string result;
while (s && *s) {
result += static_cast<char>(*s++);
}
return result;
};
const auto gl_vendor = gl_string(gl::ctx.GetString(GL_VENDOR));
const auto gl_renderer = gl_string(gl::ctx.GetString(GL_RENDERER));
const auto gl_version = gl_string(gl::ctx.GetString(GL_VERSION));
const auto gl_shader = gl_string(gl::ctx.GetString(GL_SHADING_LANGUAGE_VERSION));
BOOST_LOG(debug) << "GL: vendor: "sv << gl_vendor;
BOOST_LOG(debug) << "GL: renderer: "sv << gl_renderer;
BOOST_LOG(debug) << "GL: version: "sv << gl_version;
BOOST_LOG(debug) << "GL: shader: "sv << gl_shader;
gl::ctx.PixelStorei(GL_UNPACK_ALIGNMENT, 1);
@@ -551,7 +562,11 @@ namespace egl {
}
gl::ctx.BindTexture(GL_TEXTURE_2D, rgb->tex[0]);
gl::ctx.EGLImageTargetTexture2DOES(GL_TEXTURE_2D, rgb->xrgb8);
if (!gl::egl_image_target_texture_2d()) {
BOOST_LOG(error) << "glEGLImageTargetTexture2DOES is not available; cannot import RGB DMA-BUF"sv;
return std::nullopt;
}
gl::egl_image_target_texture_2d()(GL_TEXTURE_2D, rgb->xrgb8);
gl::ctx.BindTexture(GL_TEXTURE_2D, 0);
@@ -609,10 +624,14 @@ namespace egl {
}
gl::ctx.BindTexture(GL_TEXTURE_2D, nv12->tex[0]);
gl::ctx.EGLImageTargetTexture2DOES(GL_TEXTURE_2D, nv12->r8);
if (!gl::egl_image_target_texture_2d()) {
BOOST_LOG(error) << "glEGLImageTargetTexture2DOES is not available; cannot import YUV DMA-BUF"sv;
return std::nullopt;
}
gl::egl_image_target_texture_2d()(GL_TEXTURE_2D, nv12->r8);
gl::ctx.BindTexture(GL_TEXTURE_2D, nv12->tex[1]);
gl::ctx.EGLImageTargetTexture2DOES(GL_TEXTURE_2D, nv12->bg88);
gl::egl_image_target_texture_2d()(GL_TEXTURE_2D, nv12->bg88);
nv12->buf.bind(std::begin(nv12->tex), std::end(nv12->tex));