Move glClear and glx/eglSwapBuffers from capture backends to main

src/capture/kms.c

@@ -275,9 +275,6 @@ static int gsr_capture_kms_capture(gsr_capture *cap, AVFrame *frame, gsr_color_c
     gsr_capture_kms *self = cap->priv;
     const bool cursor_texture_id_is_external = self->params.egl->gpu_info.vendor == GSR_GPU_VENDOR_NVIDIA;
 
-    //egl->glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
-    self->params.egl->glClear(0);
-
     gsr_capture_kms_cleanup_kms_fds(self);
 
     gsr_kms_response_item *drm_fd = NULL;
@@ -457,8 +454,6 @@ static int gsr_capture_kms_capture(gsr_capture *cap, AVFrame *frame, gsr_color_c
         self->params.egl->glDisable(GL_SCISSOR_TEST);
     }
 
-    self->params.egl->eglSwapBuffers(self->params.egl->egl_display, self->params.egl->egl_surface);
-
     //self->params.egl->glFlush();
     //self->params.egl->glFinish();
 

src/capture/nvfbc.c

@@ -418,16 +418,11 @@ static int gsr_capture_nvfbc_capture(gsr_capture *cap, AVFrame *frame, gsr_color
         return 0;
     }
 
-    //cap_nvfbc->params.egl->glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
-    cap_nvfbc->params.egl->glClear(0);
-
     gsr_color_conversion_draw(color_conversion, cap_nvfbc->setup_params.dwTextures[grab_params.dwTextureIndex],
         (vec2i){0, 0}, (vec2i){frame->width, frame->height},
         (vec2i){0, 0}, (vec2i){frame->width, frame->height},
         0.0f, false);
 
-    cap_nvfbc->params.egl->glXSwapBuffers(cap_nvfbc->params.egl->x11.dpy, cap_nvfbc->params.egl->x11.window);
-
     return 0;
 }
 

src/capture/portal.c

@@ -297,9 +297,6 @@ static int gsr_capture_portal_capture(gsr_capture *cap, AVFrame *frame, gsr_colo
 
     gsr_capture_portal_cleanup_plane_fds(self);
 
-    //egl->glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
-    self->params.egl->glClear(0);
-
     /* TODO: Handle formats other than RGB(a) */
     gsr_pipewire_region region = {0, 0, 0, 0};
     gsr_pipewire_region cursor_region = {0, 0, 0, 0};
@@ -332,8 +329,6 @@ static int gsr_capture_portal_capture(gsr_capture *cap, AVFrame *frame, gsr_colo
         0.0f, false);
     self->params.egl->glDisable(GL_SCISSOR_TEST);
 
-    self->params.egl->eglSwapBuffers(self->params.egl->egl_display, self->params.egl->egl_surface);
-
     //self->params.egl->glFlush();
     //self->params.egl->glFinish();
 

src/capture/xcomposite.c

@@ -317,9 +317,6 @@ static int gsr_capture_xcomposite_capture(gsr_capture *cap, AVFrame *frame, gsr_
     gsr_capture_xcomposite *self = cap->priv;
     (void)frame;
 
-    //self->params.egl->glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
-    self->params.egl->glClear(0);
-
     if(self->clear_background) {
         self->clear_background = false;
         gsr_color_conversion_clear(color_conversion);
@@ -352,8 +349,6 @@ static int gsr_capture_xcomposite_capture(gsr_capture *cap, AVFrame *frame, gsr_
         self->params.egl->glDisable(GL_SCISSOR_TEST);
     }
 
-    self->params.egl->eglSwapBuffers(self->params.egl->egl_display, self->params.egl->egl_surface);
-
     // TODO: Do video encoder specific conversion here
 
     //self->params.egl->glFlush();

src/egl.c

@@ -419,7 +419,6 @@ static bool gsr_egl_load_gl(gsr_egl *self, void *library) {
         { (void**)&self->glTexSubImage2D, "glTexSubImage2D" },
         { (void**)&self->glCopyImageSubData, "glCopyImageSubData" },
         { (void**)&self->glGetTexImage, "glGetTexImage" },
-        { (void**)&self->glClearTexImage, "glClearTexImage" },
         { (void**)&self->glGenFramebuffers, "glGenFramebuffers" },
         { (void**)&self->glBindFramebuffer, "glBindFramebuffer" },
         { (void**)&self->glDeleteFramebuffers, "glDeleteFramebuffers" },
@@ -651,3 +650,11 @@ void gsr_egl_update(gsr_egl *self) {
     // TODO: pselect on wl_display_get_fd before doing dispatch
     wl_display_dispatch(self->wayland.dpy);
 }
+
+void gsr_egl_swap_buffers(gsr_egl *self) {
+    if(self->egl_display) {
+        self->eglSwapBuffers(self->egl_display, self->egl_surface);
+    } else if(self->x11.window) {
+        self->glXSwapBuffers(self->x11.dpy, self->x11.window);
+    }
+}

src/main.cpp

@@ -1731,7 +1731,7 @@ static void list_supported_capture_options(gsr_egl *egl, bool wayland) {
 #endif
 }
 
-static void list_command() {
+static void info_command() {
     bool wayland = false;
     Display *dpy = XOpenDisplay(nullptr);
     if (!dpy) {
@@ -2022,7 +2022,7 @@ int main(int argc, char **argv) {
         usage_full();
 
     if(argc == 2 && strcmp(argv[1], "--info") == 0) {
-        list_command();
+        info_command();
         _exit(0);
     }
 
@@ -3154,7 +3154,10 @@ int main(int argc, char **argv) {
             const int num_frames = framerate_mode == FramerateMode::CONSTANT ? std::max((int64_t)0LL, expected_frames - video_pts_counter) : 1;
 
             if(num_frames > 0 && !paused) {
+                egl.glClear(0);
                 gsr_capture_capture(capture, video_frame, &color_conversion);
+                gsr_egl_swap_buffers(&egl);
+
                 gsr_video_encoder_copy_textures_to_frame(video_encoder, video_frame);
 
                 if(hdr && !hdr_metadata_set && replay_buffer_size_secs == -1 && add_hdr_metadata_to_video_stream(capture, video_stream))