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sdl2: use framebuffer helper functions.

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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20170614084149.31314-4-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2017-06-14 10:41:48 +02:00
parent d8dc67e119
commit 371c4ef637
2 changed files with 13 additions and 31 deletions
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8
include/ui/sdl2.h
View File

@ -7,6 +7,10 @@
#include <SDL.h>
#include <SDL_syswm.h>
#ifdef CONFIG_OPENGL
# include "ui/egl-helpers.h"
#endif
struct sdl2_console {
DisplayChangeListener dcl;
DisplaySurface *surface;
@ -23,8 +27,8 @@ struct sdl2_console {
SDL_GLContext winctx;
#ifdef CONFIG_OPENGL
ConsoleGLState *gls;
GLuint tex_id;
GLuint fbo_id;
egl_fb guest_fb;
egl_fb win_fb;
bool y0_top;
bool scanout_mode;
#endif

36
ui/sdl2-gl.c
View File

@ -42,14 +42,7 @@ static void sdl2_set_scanout_mode(struct sdl2_console *scon, bool scanout)
scon->scanout_mode = scanout;
if (!scon->scanout_mode) {
if (scon->fbo_id) {
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_2D, 0, 0);
glDeleteFramebuffers(1, &scon->fbo_id);
glBindFramebuffer(GL_FRAMEBUFFER_EXT, 0);
scon->fbo_id = 0;
}
egl_fb_destroy(&scon->guest_fb);
if (scon->surface) {
surface_gl_destroy_texture(scon->gls, scon->surface);
surface_gl_create_texture(scon->gls, scon->surface);
@ -191,7 +184,6 @@ void sdl2_gl_scanout_disable(DisplayChangeListener *dcl)
assert(scon->opengl);
scon->w = 0;
scon->h = 0;
scon->tex_id = 0;
sdl2_set_scanout_mode(scon, false);
}
@ -210,48 +202,34 @@ void sdl2_gl_scanout_texture(DisplayChangeListener *dcl,
scon->y = y;
scon->w = w;
scon->h = h;
scon->tex_id = backing_id;
scon->y0_top = backing_y_0_top;
SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
sdl2_set_scanout_mode(scon, true);
if (!scon->fbo_id) {
glGenFramebuffers(1, &scon->fbo_id);
}
glBindFramebuffer(GL_FRAMEBUFFER_EXT, scon->fbo_id);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_2D, scon->tex_id, 0);
egl_fb_create_for_tex(&scon->guest_fb, backing_width, backing_height,
backing_id);
}
void sdl2_gl_scanout_flush(DisplayChangeListener *dcl,
uint32_t x, uint32_t y, uint32_t w, uint32_t h)
{
struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
int ww, wh, y1, y2;
int ww, wh;
assert(scon->opengl);
if (!scon->scanout_mode) {
return;
}
if (!scon->fbo_id) {
if (!scon->guest_fb.framebuffer) {
return;
}
SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
glBindFramebuffer(GL_READ_FRAMEBUFFER, scon->fbo_id);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
SDL_GetWindowSize(scon->real_window, &ww, &wh);
glViewport(0, 0, ww, wh);
y1 = scon->y0_top ? 0 : scon->h;
y2 = scon->y0_top ? scon->h : 0;
glBlitFramebuffer(0, y1, scon->w, y2,
0, 0, ww, wh,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
glBindFramebuffer(GL_FRAMEBUFFER_EXT, scon->fbo_id);
egl_fb_setup_default(&scon->win_fb, ww, wh);
egl_fb_blit(&scon->win_fb, &scon->guest_fb, !scon->y0_top);
SDL_GL_SwapWindow(scon->real_window);
}