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@Tosainu
Tosainu committed Aug 23, 2019
1 parent 08b0ed2 commit 1c28ecd
Showing 1 changed file with 31 additions and 50 deletions.
81 changes: 31 additions & 50 deletions petalinux_project/project-spec/meta-user/recipes-apps/fractal-explorer/files/main.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -97,13 +97,7 @@ struct window_context {
::EGLDisplay egl_display;
::EGLConfig egl_config;
::EGLContext egl_context;

struct surface {
::EGLSurface egl_surface;

::cairo_surface_t* cairo_surface;
};
surface main_surface;
::EGLSurface egl_surface;

struct {
::GLuint program;
Expand All @@ -114,6 +108,7 @@ struct window_context {
} texture;

::cairo_device_t* cairo_device;
::cairo_surface_t* cairo_surface;

int video_fd;
struct buffer_context {
Expand Down Expand Up @@ -512,27 +507,11 @@ std::tuple<::EGLDisplay, ::EGLConfig, ::EGLContext> init_egl(::gbm_device* gbm)
return init_egl(display);
}

window_context::surface make_surface(
::gbm_surface* gbm_surface,
std::tuple<const ::EGLDisplay&, const ::EGLConfig&, const ::EGLContext&> egl) {
window_context::surface surface;
surface.cairo_surface = nullptr;

const auto& [display, config, context] = egl;
surface.egl_surface = ::eglCreateWindowSurface(
display, config, reinterpret_cast<::EGLNativeWindowType>(gbm_surface), nullptr);
if (surface.egl_surface == EGL_NO_SURFACE) {
throw std::runtime_error{"failed to create egl surface"};
}

return surface;
}

static std::uint32_t next_gbm_fb_id(int drm_fd, ::gbm_bo* bo) {
const auto width = gbm_bo_get_width(bo);
const auto height = gbm_bo_get_height(bo);
const std::uint32_t handles[4] = {gbm_bo_get_handle(bo).u32};
const std::uint32_t strides[4] = {gbm_bo_get_stride(bo)};
static std::uint32_t get_gbm_bo_fb_id(int drm_fd, ::gbm_bo* bo) {
const auto width = ::gbm_bo_get_width(bo);
const auto height = ::gbm_bo_get_height(bo);
const std::uint32_t handles[4] = {::gbm_bo_get_handle(bo).u32};
const std::uint32_t strides[4] = {::gbm_bo_get_stride(bo)};
const std::uint32_t offsets[4] = {};

std::uint32_t fb_id{};
Expand All @@ -545,9 +524,8 @@ static std::uint32_t next_gbm_fb_id(int drm_fd, ::gbm_bo* bo) {
}

static void redraw_main_surface(::window_context* ctx) {
if (!::eglMakeCurrent(ctx->egl_display, ctx->main_surface.egl_surface,
ctx->main_surface.egl_surface, ctx->egl_context)) {
std::cerr << "eglMakeCurrent(main_surface) failed" << std::endl;
if (!::eglMakeCurrent(ctx->egl_display, ctx->egl_surface, ctx->egl_surface, ctx->egl_context)) {
std::cerr << "eglMakeCurrent failed" << std::endl;
return;
}

Expand Down Expand Up @@ -599,31 +577,29 @@ static void redraw_main_surface(::window_context* ctx) {
}

static void flush_main_surface(::window_context* ctx) {
if (!::eglMakeCurrent(ctx->egl_display, ctx->main_surface.egl_surface,
ctx->main_surface.egl_surface, ctx->egl_context)) {
std::cerr << "eglMakeCurrent(main_surface) failed" << std::endl;
if (!::eglMakeCurrent(ctx->egl_display, ctx->egl_surface, ctx->egl_surface, ctx->egl_context)) {
std::cerr << "eglMakeCurrent failed" << std::endl;
return;
}

::cairo_gl_surface_swapbuffers(ctx->main_surface.cairo_surface);
::cairo_gl_surface_swapbuffers(ctx->cairo_surface);
::glBindTexture(GL_TEXTURE_EXTERNAL_OES, 0);
}

static void redraw_overlay_surface(::window_context* ctx) {
if (!::eglMakeCurrent(ctx->egl_display, ctx->main_surface.egl_surface,
ctx->main_surface.egl_surface, ctx->egl_context)) {
std::cerr << "eglMakeCurrent(main_surface) failed" << std::endl;
if (!::eglMakeCurrent(ctx->egl_display, ctx->egl_surface, ctx->egl_surface, ctx->egl_context)) {
std::cerr << "eglMakeCurrent failed" << std::endl;
return;
}

const auto width = ctx->width;
const auto height = ctx->height;

if (!ctx->main_surface.cairo_surface) {
ctx->main_surface.cairo_surface = ::cairo_gl_surface_create_for_egl(
ctx->cairo_device, ctx->main_surface.egl_surface, width, height);
if (!ctx->cairo_surface) {
ctx->cairo_surface =
::cairo_gl_surface_create_for_egl(ctx->cairo_device, ctx->egl_surface, width, height);
}
auto cr = ::cairo_create(ctx->main_surface.cairo_surface);
auto cr = ::cairo_create(ctx->cairo_surface);

::cairo_set_source_rgba(cr, 0.125, 0.125, 0.125, 0.75);
::cairo_rectangle(cr, 31.5, 63.5, 497, 149);
Expand Down Expand Up @@ -699,7 +675,7 @@ static void drm_page_flip_handler(int fd, unsigned int frame, unsigned int sec,
redraw(ctx);

ctx->gbm_bo_next = ::gbm_surface_lock_front_buffer(ctx->gbm_surface);
ctx->fb_id_next = next_gbm_fb_id(ctx->drm_fd, ctx->gbm_bo_next);
ctx->fb_id_next = get_gbm_bo_fb_id(ctx->drm_fd, ctx->gbm_bo_next);

if (::drmModePageFlip(ctx->drm_fd, ctx->crtc_id, ctx->fb_id_next, DRM_MODE_PAGE_FLIP_EVENT,
ctx)) {
Expand Down Expand Up @@ -1027,11 +1003,15 @@ auto main() -> int {

std::tie(ctx.egl_display, ctx.egl_config, ctx.egl_context) = init_egl(ctx.gbm_device);

ctx.main_surface =
make_surface(ctx.gbm_surface, std::tie(ctx.egl_display, ctx.egl_config, ctx.egl_context));
ctx.egl_surface =
::eglCreateWindowSurface(ctx.egl_display, ctx.egl_config,
reinterpret_cast<::EGLNativeWindowType>(ctx.gbm_surface), nullptr);
if (ctx.egl_surface == EGL_NO_SURFACE) {
std::cerr << "failed to create egl surface" << std::endl;
return -1;
}

if (!::eglMakeCurrent(ctx.egl_display, ctx.main_surface.egl_surface, ctx.main_surface.egl_surface,
ctx.egl_context)) {
if (!::eglMakeCurrent(ctx.egl_display, ctx.egl_surface, ctx.egl_surface, ctx.egl_context)) {
return -1;
}

Expand Down Expand Up @@ -1103,6 +1083,7 @@ auto main() -> int {
std::cerr << "failed to create cairo egl device" << std::endl;
return -1;
}
ctx.cairo_surface = nullptr;

ctx.epoll_fd = ::epoll_create1(EPOLL_CLOEXEC);
if (ctx.epoll_fd < 0) {
Expand Down Expand Up @@ -1180,10 +1161,10 @@ auto main() -> int {
{
::glClearColor(0.0, 0.0, 0.0, 1.0);
::glClear(GL_COLOR_BUFFER_BIT);
::eglSwapBuffers(ctx.egl_display, ctx.main_surface.egl_surface);
::eglSwapBuffers(ctx.egl_display, ctx.egl_surface);

ctx.gbm_bo = ::gbm_surface_lock_front_buffer(ctx.gbm_surface);
ctx.fb_id = next_gbm_fb_id(ctx.drm_fd, ctx.gbm_bo);
ctx.fb_id = get_gbm_bo_fb_id(ctx.drm_fd, ctx.gbm_bo);

if (::drmModeSetCrtc(ctx.drm_fd, ctx.crtc_id, ctx.fb_id, 0, 0, &ctx.connector_id, 1,
&ctx.display_mode)) {
Expand All @@ -1203,7 +1184,7 @@ auto main() -> int {
redraw(&ctx);

ctx.gbm_bo_next = ::gbm_surface_lock_front_buffer(ctx.gbm_surface);
ctx.fb_id_next = next_gbm_fb_id(ctx.drm_fd, ctx.gbm_bo_next);
ctx.fb_id_next = get_gbm_bo_fb_id(ctx.drm_fd, ctx.gbm_bo_next);

if (::drmModePageFlip(ctx.drm_fd, ctx.crtc_id, ctx.fb_id_next, DRM_MODE_PAGE_FLIP_EVENT,
&ctx)) {
Expand Down

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