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xwayland/glx: Enable sRGB fbconfigs 

We turn this on if the GL underneath us can enable GL_FRAMEBUFFER_SRGB.
We do try to generate both capable and incapable configs, which is to
keep llvmpipe working until the client side gets smarter about its srgb
capabilities.
This commit is contained in:
Adam Jackson 2021-04-28 14:02:39 -04:00 committed by Adam Jackson
parent 735dbde482
commit 6c1e6429bc
1 changed files with 28 additions and 5 deletions
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33
hw/xwayland/xwayland-glx.c
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@ -138,7 +138,6 @@ egl_create_glx_drawable(ClientPtr client, __GLXscreen *screen,
/*
* TODO:
*
* - figure out sRGB
* - bindToTextureTargets is suspicious
* - better channel mask setup
* - drawable type masks is suspicious
@ -146,7 +145,8 @@ egl_create_glx_drawable(ClientPtr client, __GLXscreen *screen,
static struct egl_config *
translate_eglconfig(struct egl_screen *screen, EGLConfig hc,
struct egl_config *chain, Bool direct_color,
Bool double_buffer, Bool duplicate_for_composite)
Bool double_buffer, Bool duplicate_for_composite,
Bool srgb_only)
{
EGLint value;
struct egl_config *c = calloc(1, sizeof *c);
@ -167,7 +167,6 @@ translate_eglconfig(struct egl_screen *screen, EGLConfig hc,
c->base.optimalPbufferHeight = 0;
c->base.bindToMipmapTexture = 0;
c->base.bindToTextureTargets = GLX_DONT_CARE;
c->base.sRGBCapable = 0;
c->base.swapMethod = GLX_SWAP_UNDEFINED_OML;
/* this is... suspect */
@ -242,6 +241,19 @@ translate_eglconfig(struct egl_screen *screen, EGLConfig hc,
/* else panic */
}
/* derived state: sRGB. EGL doesn't put this in the fbconfig at all,
* it's a property of the surface specified at creation time, so we have
* to infer it from the GL's extensions. only makes sense at 8bpc though.
*/
if (srgb_only) {
if (c->base.redBits == 8) {
c->base.sRGBCapable = GL_TRUE;
} else {
free(c);
return chain;
}
}
/* map to the backend's config */
c->config = hc;
@ -314,6 +326,9 @@ egl_mirror_configs(ScreenPtr pScreen, struct egl_screen *screen)
int i, j, k, nconfigs;
struct egl_config *c = NULL;
EGLConfig *host_configs = NULL;
bool can_srgb = epoxy_has_gl_extension("GL_ARB_framebuffer_sRGB") ||
epoxy_has_gl_extension("GL_EXT_framebuffer_sRGB") ||
epoxy_has_gl_extension("GL_EXT_sRGB_write_control");
eglGetConfigs(screen->display, NULL, 0, &nconfigs);
if (!(host_configs = calloc(nconfigs, sizeof *host_configs)))
@ -326,11 +341,19 @@ egl_mirror_configs(ScreenPtr pScreen, struct egl_screen *screen)
*/
for (i = nconfigs - 1; i > 0; i--)
for (j = 0; j < 3; j++) /* direct_color */
for (k = 0; k < 2; k++) /* double_buffer */
for (k = 0; k < 2; k++) /* double_buffer */ {
c = translate_eglconfig(screen, host_configs[i], c,
/* direct_color */ j == 1,
/* double_buffer */ k > 0,
/* duplicate_for_composite */ j == 0);
/* duplicate_for_composite */ j == 0,
/* srgb_only */ false);
if (can_srgb)
c = translate_eglconfig(screen, host_configs[i], c,
/* direct_color */ j == 1,
/* double_buffer */ k > 0,
/* duplicate_for_composite */ j == 0,
/* srgb_only */ true);
}
screen->configs = host_configs;
return c ? &c->base : NULL;