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Fix surface copy by using FBOs

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This commit is contained in:
Kristian Høgsberg 2009-09-12 16:42:07 -04:00
parent 5fc96ff6e2
commit 4adaf5c6bc
1 changed files with 31 additions and 21 deletions
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52
wayland-system-compositor.c
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@ -37,6 +37,7 @@
#define LIBUDEV_I_KNOW_THE_API_IS_SUBJECT_TO_CHANGE
#include <libudev.h>
#define GL_GLEXT_PROTOTYPES
#include <GL/gl.h>
#include <eagle.h>
@ -166,7 +167,6 @@ struct wlsc_surface {
struct wl_visual *visual;
GLuint texture;
struct wl_map map;
EGLSurface surface;
int width, height;
struct wl_list link;
struct wlsc_matrix matrix;
@ -342,7 +342,6 @@ wlsc_surface_init(struct wlsc_surface *surface,
surface->map.y = y;
surface->map.width = width;
surface->map.height = height;
surface->surface = EGL_NO_SURFACE;
surface->visual = visual;
wlsc_matrix_init(&surface->matrix);
}
@ -393,8 +392,6 @@ wlsc_surface_destroy(struct wlsc_surface *surface,
wl_list_remove(&surface->link);
glDeleteTextures(1, &surface->texture);
if (surface->surface != EGL_NO_SURFACE)
eglDestroySurface(compositor->display, surface->surface);
free(surface);
}
@ -730,13 +727,9 @@ surface_attach(struct wl_client *client,
struct wlsc_surface *es = (struct wlsc_surface *) surface;
struct wlsc_compositor *ec = es->compositor;
if (es->surface != EGL_NO_SURFACE)
eglDestroySurface(ec->display, es->surface);
es->width = width;
es->height = height;
es->surface = eglCreateSurfaceForName(ec->display, ec->config,
name, width, height, stride, NULL);
if (visual == &ec->argb_visual.base)
es->visual = &ec->argb_visual;
else if (visual == &ec->premultiplied_argb_visual.base)
@ -751,7 +744,9 @@ surface_attach(struct wl_client *client,
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
eglBindTexImage(ec->display, es->surface, GL_TEXTURE_2D);
glTextureExternalMESA(GL_TEXTURE_2D, GL_RGBA, 4,
width, height, stride / 4, name);
}
static void
@ -780,20 +775,35 @@ surface_copy(struct wl_client *client,
int32_t x, int32_t y, int32_t width, int32_t height)
{
struct wlsc_surface *es = (struct wlsc_surface *) surface;
struct wlsc_compositor *ec = es->compositor;
EGLSurface src;
GLuint fbo[2], rb;
src = eglCreateSurfaceForName(ec->display, ec->config,
name, x + width, y + height, stride, NULL);
glGenFramebuffers(2, fbo);
eglMakeCurrent(ec->display, es->surface, src, ec->context);
glDrawBuffer(GL_FRONT);
glReadBuffer(GL_FRONT);
glRasterPos2d(0, 0);
fprintf(stderr, "copypixels\n");
glCopyPixels(x, y, width, height, GL_COLOR);
glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, fbo[1]);
glGenRenderbuffers(1, &rb);
glBindRenderbuffer(GL_RENDERBUFFER_EXT, rb);
glRenderbufferExternalMESA(GL_RENDERBUFFER_EXT,
GL_RGBA,
es->width, es->height,
stride / 4, name);
glFramebufferRenderbuffer(GL_READ_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,
GL_RENDERBUFFER_EXT,
rb);
eglDestroySurface(ec->display, src);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, fbo[0]);
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_2D, es->texture, 0);
glBlitFramebuffer(x, y, x + width, y + height,
dst_x, dst_y, dst_x+ width, dst_y + height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
glBindFramebuffer(GL_FRAMEBUFFER_EXT, 0);
glBindRenderbuffer(GL_RENDERBUFFER_EXT, 0);
glDeleteRenderbuffers(1, &rb);
glDeleteFramebuffers(2, fbo);
}
static void