diff options
Diffstat (limited to 'render_sdl.c')
| -rwxr-xr-x | render_sdl.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/render_sdl.c b/render_sdl.c index f29c76e..e0fe476 100755 --- a/render_sdl.c +++ b/render_sdl.c @@ -12,6 +12,7 @@ #include "genesis.h" #include "io.h" #include "util.h" +#include "ppm.h" #ifndef DISABLE_OPENGL #include <GL/glew.h> @@ -488,6 +489,15 @@ void render_update_caption(char *title) fps_caption = NULL; } +static char *screenshot_path; +void render_save_screenshot(char *path) +{ + if (screenshot_path) { + free(screenshot_path); + } + screenshot_path = path; +} + uint32_t *locked_pixels; uint32_t locked_pitch; uint32_t *render_get_framebuffer(uint8_t which, int *pitch) @@ -538,6 +548,19 @@ void render_framebuffer_updated(uint8_t which, int width) uint32_t height = which <= FRAMEBUFFER_EVEN ? (video_standard == VID_NTSC ? 243 : 294) - (overscan_top[video_standard] + overscan_bot[video_standard]) : 240; + FILE *screenshot_file = NULL; + uint32_t shot_height; + if (screenshot_path && which == FRAMEBUFFER_ODD) { + screenshot_file = fopen(screenshot_path, "wb"); + if (screenshot_file) { + info_message("Saving screenshot to %s\n", screenshot_path); + } else { + warning("Failed to open screenshot file %s for writing\n", screenshot_path); + } + free(screenshot_path); + screenshot_path = NULL; + shot_height = video_standard == VID_NTSC ? 243 : 294; + } #ifndef DISABLE_OPENGL if (render_gl && which <= FRAMEBUFFER_EVEN) { glBindTexture(GL_TEXTURE_2D, textures[which]); @@ -568,6 +591,11 @@ void render_framebuffer_updated(uint8_t which, int width) glDisableVertexAttribArray(at_pos); SDL_GL_SwapWindow(main_window); + + if (screenshot_file) { + //properly supporting interlaced modes here is non-trivial, so only save the odd field for now + save_ppm(screenshot_file, texture_buf, width, shot_height, 320*sizeof(uint32_t)); + } } else { #endif if (which <= FRAMEBUFFER_EVEN && last != which) { @@ -586,6 +614,15 @@ void render_framebuffer_updated(uint8_t which, int width) } height = 480; } + if (screenshot_file) { + uint32_t shot_pitch = locked_pitch; + if (which == FRAMEBUFFER_EVEN) { + shot_height *= 2; + } else { + shot_pitch *= 2; + } + save_ppm(screenshot_file, locked_pixels, width, shot_height, shot_pitch); + } SDL_UnlockTexture(sdl_textures[which]); SDL_Rect src_clip = { .x = 0, @@ -598,6 +635,9 @@ void render_framebuffer_updated(uint8_t which, int width) #ifndef DISABLE_OPENGL } #endif + if (screenshot_file) { + fclose(screenshot_file); + } if (which <= FRAMEBUFFER_EVEN) { last = which; static uint32_t frame_counter, start; |