Apple-2-Tools/bradgrantham-apple2e
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scale GIF output to 2x screen size

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This commit is contained in:
Brad Grantham 2018-08-08 15:46:41 -07:00
parent 6caca1ec5d
commit 6028d62786
1 changed files with 19 additions and 16 deletions
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35
interface.cpp
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@ -176,6 +176,9 @@ render_target::render_target(int w, int h)
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
const int apple2_screen_width = 280;
const int apple2_screen_height = 192;
const int recording_scale = 2;
chrono::time_point<chrono::system_clock> start_time;
@ -206,9 +209,9 @@ deque<event> event_queue;
bool force_caps_on = true;
bool draw_using_color = false;
ModeSettings line_to_mode[192];
ModeSettings line_to_mode[apple2_screen_height];
ModePoint most_recent_modepoint;
vertex_array line_to_area[192];
vertex_array line_to_area[apple2_screen_height];
render_target *rendertarget_for_recording;
@ -742,8 +745,8 @@ vertex_array make_rectangle_vertex_array(float x, float y, float w, float h)
void initialize_screen_areas()
{
for(int i = 0; i < 192; i++) {
line_to_area[i] = make_rectangle_vertex_array(0, i, 280, 1);
for(int i = 0; i < apple2_screen_height; i++) {
line_to_area[i] = make_rectangle_vertex_array(0, i, apple2_screen_width, 1);
}
}
@ -1150,7 +1153,7 @@ struct apple2screen : public widget
virtual width_height get_min_dimensions() const
{
return {280, 192};
return {apple2_screen_width, apple2_screen_height};
}
virtual void draw(double now, float to_screen[9], float x, float y, float w_, float h_)
@ -1159,7 +1162,7 @@ struct apple2screen : public widget
h = h_;
long long elapsed_millis = now * 1000;
for(int i = 0; i < 192; i++) {
for(int i = 0; i < apple2_screen_height; i++) {
const ModeSettings& settings = line_to_mode[i];
set_shader(to_screen, settings.mode, (i < 160) ? false : settings.mixed, settings.page, settings.vid80, (elapsed_millis / 300) % 2, x, y);
@ -1763,10 +1766,10 @@ static void start_record()
}
if(!rendertarget_for_recording) {
rendertarget_for_recording = new render_target(280, 192);
rendertarget_for_recording = new render_target(apple2_screen_width * recording_scale, apple2_screen_height * recording_scale);
}
GifBegin(&gif_writer, "out.gif", 280, 192, 5);
GifBegin(&gif_writer, "out.gif", apple2_screen_width * recording_scale, apple2_screen_height * recording_scale, 5);
gif_recording = true;
}
@ -1828,11 +1831,11 @@ void make_to_screen_transform()
to_screen_transform[2 * 3 + 1] = 1;
to_screen_transform[2 * 3 + 2] = 1;
recording_transform[0 * 3 + 0] = 2.0 / 280.0;
recording_transform[0 * 3 + 0] = 2.0 / apple2_screen_width;
recording_transform[0 * 3 + 1] = 0;
recording_transform[0 * 3 + 2] = 0;
recording_transform[1 * 3 + 0] = 0;
recording_transform[1 * 3 + 1] = 2.0 / 192.0;
recording_transform[1 * 3 + 1] = 2.0 / apple2_screen_height;
recording_transform[1 * 3 + 2] = 0;
recording_transform[2 * 3 + 0] = -1;
recording_transform[2 * 3 + 1] = -1;
@ -1864,26 +1867,26 @@ void save_rgba_to_ppm(const unsigned char *rgba8_pixels, int width, int height,
void add_rendertarget_to_gif(double now, render_target *rt)
{
static unsigned char image_recorded[280 * 192 * 4];
static unsigned char image_recorded[apple2_screen_width * recording_scale * apple2_screen_height * recording_scale * 4];
rt->start_rendering();
glViewport(0, 0, 280, 192);
glViewport(0, 0, apple2_screen_width * recording_scale, apple2_screen_height * recording_scale);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
screen_only->draw(now, recording_transform, 0, 0, 280, 192);
screen_only->draw(now, recording_transform, 0, 0, apple2_screen_width, apple2_screen_height);
rt->stop_rendering();
rt->start_reading();
glReadPixels(0, 0, 280, 192, GL_RGBA, GL_UNSIGNED_BYTE, image_recorded);
glReadPixels(0, 0, apple2_screen_width * recording_scale, apple2_screen_height * recording_scale, GL_RGBA, GL_UNSIGNED_BYTE, image_recorded);
// Enable to debug framebuffer operations by writing result to screen.ppm.
if(false) {
save_rgba_to_ppm(image_recorded, 280, 192, "screen.ppm");
save_rgba_to_ppm(image_recorded, apple2_screen_width * recording_scale, apple2_screen_height * recording_scale, "screen.ppm");
}
GifWriteFrame(&gif_writer, image_recorded, 280, 192, 5, 8, true);
GifWriteFrame(&gif_writer, image_recorded, apple2_screen_width * recording_scale, apple2_screen_height * recording_scale, 5, 8, true);
rt->stop_reading();
}