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wgl: Replace glReadPixels in wglBindTexImage2D by the MUCH faster glCopyTexImage2D.

This commit is contained in:
Roderick Colenbrander 2007-07-29 14:13:45 +02:00 committed by Alexandre Julliard
parent 8cbb0a6f18
commit d03e2696cf
1 changed files with 15 additions and 16 deletions
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31
dlls/winex11.drv/opengl.c
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@ -250,6 +250,7 @@ static void (*pglXFreeMemoryNV)(GLvoid *pointer);
MAKE_FUNCPTR(glBindTexture)
MAKE_FUNCPTR(glBitmap)
MAKE_FUNCPTR(glCopyTexSubImage1D)
MAKE_FUNCPTR(glCopyTexImage2D)
MAKE_FUNCPTR(glCopyTexSubImage2D)
MAKE_FUNCPTR(glDisable)
MAKE_FUNCPTR(glDrawBuffer)
@ -396,6 +397,7 @@ LOAD_FUNCPTR(glXGetFBConfigs)
LOAD_FUNCPTR(glBindTexture)
LOAD_FUNCPTR(glBitmap)
LOAD_FUNCPTR(glCopyTexSubImage1D)
LOAD_FUNCPTR(glCopyTexImage2D)
LOAD_FUNCPTR(glCopyTexSubImage2D)
LOAD_FUNCPTR(glDisable)
LOAD_FUNCPTR(glDrawBuffer)
@ -2134,7 +2136,7 @@ static HPBUFFERARB WINAPI X11DRV_wglCreatePbufferARB(HDC hdc, int iPixelFormat,
goto create_failed;
}
object->texture_target = GL_TEXTURE_CUBE_MAP;
object->texture_bind_target = GL_TEXTURE_CUBE_MAP;
object->texture_bind_target = GL_TEXTURE_BINDING_CUBE_MAP;
break;
}
case WGL_TEXTURE_1D_ARB: {
@ -2143,12 +2145,12 @@ static HPBUFFERARB WINAPI X11DRV_wglCreatePbufferARB(HDC hdc, int iPixelFormat,
goto create_failed;
}
object->texture_target = GL_TEXTURE_1D;
object->texture_bind_target = GL_TEXTURE_1D;
object->texture_bind_target = GL_TEXTURE_BINDING_1D;
break;
}
case WGL_TEXTURE_2D_ARB: {
object->texture_target = GL_TEXTURE_2D;
object->texture_bind_target = GL_TEXTURE_2D;
object->texture_bind_target = GL_TEXTURE_BINDING_2D;
break;
}
case WGL_TEXTURE_RECTANGLE_NV: {
@ -2736,8 +2738,8 @@ static GLboolean WINAPI X11DRV_wglBindTexImageARB(HPBUFFERARB hPbuffer, int iBuf
}
if (!use_render_texture_ati && 1 == use_render_texture_emulation) {
void *buf;
static int init = 0;
int prev_binded_texture = 0;
GLXContext prev_context = pglXGetCurrentContext();
Drawable prev_drawable = pglXGetCurrentDrawable();
GLXContext tmp_context;
@ -2751,25 +2753,22 @@ static GLboolean WINAPI X11DRV_wglBindTexImageARB(HPBUFFERARB hPbuffer, int iBuf
FIXME("partial stub!\n");
}
buf = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, object->texture_bpp*object->width*object->height);
if(!buf) {
ERR("Unable to allocate a buffer for render_texture emulation\n");
return GL_FALSE;
}
TRACE("drawable=%p, context=%p\n", (void*)object->drawable, prev_context);
tmp_context = pglXCreateNewContext(gdi_display, object->fmt->fbconfig, object->fmt->render_type, NULL, True);
tmp_context = pglXCreateNewContext(gdi_display, object->fmt->fbconfig, object->fmt->render_type, prev_context, True);
/* Switch to our pbuffer and readback its contents */
pglGetIntegerv(object->texture_bind_target, &prev_binded_texture);
/* Switch to our pbuffer */
pglXMakeCurrent(gdi_display, object->drawable, tmp_context);
pglReadPixels(0, 0, object->width, object->height, object->texture_format, object->texture_type, buf);
/* Make sure that the prev_binded_texture is set as the current texture state isn't shared between contexts.
* After that upload the pbuffer texture data. */
pglBindTexture(object->texture_target, prev_binded_texture);
pglCopyTexImage2D(object->texture_target, 0, object->use_render_texture, 0, 0, object->width, object->height, 0);
/* Switch back to the original drawable and upload the pbuffer-texture */
pglXMakeCurrent(object->display, prev_drawable, prev_context);
pglTexImage2D(object->texture_target, 0, object->use_render_texture, object->width, object->height, 0, object->texture_format, object->texture_type, buf);
pglXDestroyContext(gdi_display, tmp_context);
HeapFree(GetProcessHeap(), 0, buf);
return GL_TRUE;
}