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Implement fbdev swapbuffers()

This commit is contained in:
Jon Smirl 2005-05-18 01:44:11 +00:00
parent 6e56f905d0
commit 9a3da7ea7b
2 changed files with 51 additions and 4 deletions
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8
progs/egl/demo2.c
View File

@ -9,7 +9,7 @@
#include <GLES/egl.h>
#define FRONTBUFFER
//#define FRONTBUFFER
static void _subset_Rectf(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2)
{
@ -22,7 +22,7 @@ static void _subset_Rectf(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2)
}
static void redraw(EGLDisplay dpy, int rot)
static void redraw(EGLDisplay dpy, EGLSurface surf, int rot)
{
printf("Redraw event\n");
@ -51,7 +51,7 @@ static void redraw(EGLDisplay dpy, int rot)
#ifdef FRONTBUFFER
glFlush();
#else
EGLSwapBuffers( dpy, w );
eglSwapBuffers( dpy, surf );
#endif
glFinish();
}
@ -167,7 +167,7 @@ main(int argc, char *argv[])
glShadeModel( GL_FLAT );
for (i = 0; i < 6; i++) {
redraw(d, i*10 );
redraw(d, screen_surf, i*10 );
printf("sleep(1)\n");
sleep(1);

47
src/mesa/drivers/dri/fb/fb_egl.c
View File

@ -757,6 +757,52 @@ err:
}
/* If the backbuffer is on a videocard, this is extraordinarily slow!
*/
static EGLBoolean
fbSwapBuffers(_EGLDriver *drv, EGLDisplay dpy, EGLSurface draw)
{
fbContext *context = (fbContext *)_eglGetCurrentContext();
fbSurface *fs = Lookup_fbSurface(draw);
struct gl_renderbuffer * front_renderbuffer = fs->mesa_framebuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer;
void *frontBuffer = front_renderbuffer->Data;
int currentPitch = ((driRenderbuffer *)front_renderbuffer)->pitch;
void *backBuffer = fs->mesa_framebuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer->Data;
if (!_eglSwapBuffers(drv, dpy, draw))
return EGL_FALSE;
if (context) {
GLcontext *ctx = context->glCtx;
if (ctx->Visual.doubleBufferMode) {
int i;
int offset = 0;
char *tmp = _mesa_malloc(currentPitch);
_mesa_notifySwapBuffers( ctx ); /* flush pending rendering comands */
ASSERT(frontBuffer);
ASSERT(backBuffer);
for (i = 0; i < fs->Base.Height; i++) {
_mesa_memcpy(tmp, (char *) backBuffer + offset,
currentPitch);
_mesa_memcpy((char *) frontBuffer + offset, tmp,
currentPitch);
offset += currentPitch;
}
_mesa_free(tmp);
}
}
else {
/* XXX this shouldn't be an error but we can't handle it for now */
_mesa_problem(NULL, "fbSwapBuffers: drawable has no context!\n");
}
}
/*
* Just to silence warning
*/
@ -793,6 +839,7 @@ _eglMain(NativeDisplayType dpy)
fb->Base.DestroyContext = fbDestroyContext;
fb->Base.CreateScreenSurfaceMESA = fbCreateScreenSurfaceMESA;
fb->Base.ShowSurfaceMESA = fbShowSurfaceMESA;
fb->Base.SwapBuffers = fbSwapBuffers;
/* enable supported extensions */
fb->Base.MESA_screen_surface = EGL_TRUE;