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[Test] (CTS): isolate the DirectVulkan renderbuffer-FBO readback defect so the rest of KHR-GL33 can be measured

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swung0x48
2026-07-26 10:43:48 -04:00
parent 0e933b8f2f
commit 39f21e52ea
4 changed files with 180 additions and 5 deletions
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tools/cts/probe/mgprobe.c
+44 -3
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@@ -77,6 +77,7 @@ typedef void *EGLNativeWindowType;
#define GL_TEXTURE_MIN_FILTER 0x2801
#define GL_TEXTURE_MAG_FILTER 0x2800
#define GL_NEAREST 0x2600
#define GL_RENDERBUFFER 0x8D41
typedef EGLDisplay (*P_getDisplay)(EGLNativeDisplayType);
typedef EGLBoolean (*P_initialize)(EGLDisplay, EGLint *, EGLint *);
@@ -105,6 +106,10 @@ typedef void (*P_glBindFramebuffer)(unsigned int, unsigned int);
typedef void (*P_glFramebufferTexture2D)(unsigned int, unsigned int, unsigned int, unsigned int, int);
typedef unsigned int (*P_glCheckFramebufferStatus)(unsigned int);
typedef void (*P_glViewport)(int, int, int, int);
typedef void (*P_glGenRenderbuffers)(int, unsigned int *);
typedef void (*P_glBindRenderbuffer)(unsigned int, unsigned int);
typedef void (*P_glRenderbufferStorage)(unsigned int, unsigned int, int, int);
typedef void (*P_glFramebufferRenderbuffer)(unsigned int, unsigned int, unsigned int, unsigned int);
static void *g_lib;
static void *S(const char *n) { return dlsym(g_lib, n); }
@@ -256,6 +261,10 @@ int main(int argc, char **argv) {
P_glFramebufferTexture2D glFramebufferTexture2D_ = (P_glFramebufferTexture2D)S("glFramebufferTexture2D");
P_glCheckFramebufferStatus glCheckFramebufferStatus_ = (P_glCheckFramebufferStatus)S("glCheckFramebufferStatus");
P_glViewport glViewport_ = (P_glViewport)S("glViewport");
P_glGenRenderbuffers glGenRenderbuffers_ = (P_glGenRenderbuffers)S("glGenRenderbuffers");
P_glBindRenderbuffer glBindRenderbuffer_ = (P_glBindRenderbuffer)S("glBindRenderbuffer");
P_glRenderbufferStorage glRenderbufferStorage_ = (P_glRenderbufferStorage)S("glRenderbufferStorage");
P_glFramebufferRenderbuffer glFramebufferRenderbuffer_ = (P_glFramebufferRenderbuffer)S("glFramebufferRenderbuffer");
int major = -1, minor = -1, profile = -1;
glGetIntegerv_(GL_MAJOR_VERSION, &major);
@@ -306,11 +315,43 @@ int main(int argc, char **argv) {
printf(" user-FBO incomplete status=0x%x\n", fbst);
}
/* FBO with a RENDERBUFFER colour attachment. This is what dEQP's
* FboRenderContext allocates for --deqp-surface-type=fbo, so it is the path
* that actually decides a conformance run - a texture-attached FBO working
* says nothing about it. */
unsigned int rbo = 0, rfbo = 0;
int rboOk = 0;
if (glGenRenderbuffers_ && glBindRenderbuffer_ && glRenderbufferStorage_ && glFramebufferRenderbuffer_) {
glGenRenderbuffers_(1, &rbo);
glBindRenderbuffer_(GL_RENDERBUFFER, rbo);
glRenderbufferStorage_(GL_RENDERBUFFER, GL_RGBA8, DIM, DIM);
glBindRenderbuffer_(GL_RENDERBUFFER, 0);
glGenFramebuffers_(1, &rfbo);
glBindFramebuffer_(GL_FRAMEBUFFER, rfbo);
glFramebufferRenderbuffer_(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, rbo);
unsigned int rst = glCheckFramebufferStatus_(GL_FRAMEBUFFER);
if (rst == GL_FRAMEBUFFER_COMPLETE) {
glViewport_(0, 0, DIM, DIM);
glClearColor_(0.1f, 0.7f, 0.3f, 1.0f);
glClear_(GL_COLOR_BUFFER_BIT);
if (glFinish_) glFinish_();
memset(px, 0, sizeof px);
glReadPixels_(DIM / 2, DIM / 2, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, px);
rboOk = near8(px[0], 26, 10) && near8(px[1], 179, 10) && near8(px[2], 77, 10);
printf(" rbo-FBO readback (%u,%u,%u,%u) %s\n", px[0], px[1], px[2], px[3],
rboOk ? "ok" : "BROKEN");
} else {
printf(" rbo-FBO incomplete status=0x%x\n", rst);
}
} else {
printf(" rbo-FBO skipped (renderbuffer entry points unavailable)\n");
}
unsigned glerr = glGetError_ ? glGetError_() : 0;
int ok = fboOk && (major > 3 || (major == 3 && minor >= 3)) && (profile & 1) && glerr == 0;
printf("%s backend=%s surface=%s default_fb=%s user_fbo=%s glerr=0x%x\n",
int ok = fboOk && rboOk && (major > 3 || (major == 3 && minor >= 3)) && (profile & 1) && glerr == 0;
printf("%s backend=%s surface=%s default_fb=%s user_fbo=%s rbo_fbo=%s glerr=0x%x\n",
ok ? "PASS" : "FAIL", backend, surface, defOk ? "ok" : "broken",
fboOk ? "ok" : "broken", glerr);
fboOk ? "ok" : "broken", rboOk ? "ok" : "broken", glerr);
fflush(stdout);
/* MobileGL aborts in static teardown; leave before that runs. */