void
piglit_init(int argc, char **argv)
{
bool pass = true;
GLuint framebuffer;
GLuint default_framebuffer = 0;
GLenum bufs[2] = {GL_BACK_LEFT, GL_BACK};
GLenum one_buf;
bool subtest_pass;
int i;
glCreateFramebuffers(1, &framebuffer);
piglit_check_gl_error(GL_NO_ERROR);
/*
* "An INVALID_OPERATION error is generated by
* NamedFramebufferDrawBuffers if framebuffer is not zero or
* the name of an existing framebuffer"
*/
glNamedFramebufferDrawBuffers(5, 2, bufs);
PIGLIT_SUBTEST_ERROR(GL_INVALID_OPERATION, pass, "INVALID_OPERATION if "
"framebuffer is not zero or the name of an existing "
"framebuffer");
/*
* "An INVALID_VALUE error is generated if n is negative, or greater than the
* value of MAX_DRAW_BUFFERS."
*/
int max_draw_buffers;
glGetIntegerv(GL_MAX_DRAW_BUFFERS, &max_draw_buffers);
subtest_pass = true;
glNamedFramebufferDrawBuffers(0, -1, bufs);
subtest_pass = subtest_pass & piglit_check_gl_error(GL_INVALID_VALUE);
glNamedFramebufferDrawBuffers(0, max_draw_buffers + 1, bufs);
subtest_pass = subtest_pass & piglit_check_gl_error(GL_INVALID_VALUE);
PIGLIT_SUBTEST_CONDITION(subtest_pass, pass, "INVALID_VALUE error is "
"generated if n is negative, or greater than "
"the value of MAX_DRAW_BUFFERS.");
/*
* From OpenGL 4.5 spec
* "An INVALID_ENUM error is generated if any value in bufs
* is not one of the values in tables 17.5 or 17.6."
*/
subtest_pass = true;
one_buf = GL_RED;
glNamedFramebufferDrawBuffers(default_framebuffer, 1, &one_buf);
subtest_pass = subtest_pass && piglit_check_gl_error(GL_INVALID_ENUM);
glNamedFramebufferDrawBuffers(framebuffer, 1, &one_buf);
subtest_pass = subtest_pass && piglit_check_gl_error(GL_INVALID_ENUM);
PIGLIT_SUBTEST_CONDITION(subtest_pass, pass, "INVALID_ENUM error is "
"generated if any value in bufs is not one of "
"the values in tables 17.5 or 17.6.");
/*
* (cont on error out of 17.5 or 17.6) Specifically for the default
* framebuffer:
* From OpenGL 4.5 spec, page 492 (515 PDF)
* "If the default framebuffer is affected, then each of the
* constants must be one of the values listed in table 17.6
* or the special value BACK .""
*
* And:
*"An INVALID_OPERATION error is generated if the default
* framebuffer is affected and any value in bufs is a
* constant (other than NONE or BACK) that does not indicate
* one of the color buffers allocated to the default
* framebuffer."
*
* So for the default framebuffer, and that table, we expect
* GL_NO_ERROR or GL_INVALID_OPERATION.
*/
subtest_pass = true;
for (i = 0; i < ARRAY_SIZE(table_17_6_and_back); i++) {
GLenum err = 0;
glNamedFramebufferDrawBuffers(default_framebuffer, 1,
&table_17_6_and_back[i]);
/* We manually check glGetError instead of relying on
* piglit_check_gl_error like in other subtests
* because for subtests that checks several enums, we
* are interested on getting which one failed. That
* makes debugging easier.
*/
err = glGetError();
if (err != GL_NO_ERROR && err != GL_INVALID_OPERATION) {
printf("Expected GL_NO_ERROR or GL_INVALID_OPERATION "
"with %s but received: %s\n",
piglit_get_gl_enum_name(table_17_6_and_back[i]),
piglit_get_gl_error_name(err));
subtest_pass = false;
}
}
/* For that spec paragraph, we also test enums from table
* 17.5. They should return INVALID_OPERATION, as after all,
* they are not allocated to the default framebuffer. */
one_buf = GL_COLOR_ATTACHMENT0;
glNamedFramebufferDrawBuffers(default_framebuffer, 1, &one_buf);
subtest_pass = subtest_pass &&
piglit_check_gl_error(GL_INVALID_OPERATION);
PIGLIT_SUBTEST_CONDITION(subtest_pass, pass, "If the default framebuffer"
" is affected, then each of the constants must "
"be one of the values listed in table 17.6 or "
"the special value BACK. INVALID_OPERATION error"
" is generated if the default framebuffer is "
"affected and any value in bufs is a constant "
"(other than NONE or BACK ) that does not indicate "
"one of the color buffers allocated to the default"
" framebuffer.");
/* (cont default framebuffer)
* From OpenGL 4.5 spec:
* "When BACK is used, n must be 1 and color values are
* written into the left buffer for single-buffered
* contexts, or into the back left buffer for
* double-buffered contexts"
*
* From the error table:
* "An INVALID_OPERATION error is generated if any value in
* bufs is BACK , and n is not one."
*
*/
glNamedFramebufferDrawBuffers(default_framebuffer, 2, bufs);
PIGLIT_SUBTEST_ERROR(GL_INVALID_OPERATION, pass, "(default framebuffer)"
" An INVALID_OPERATION error is generated if any "
"value in bufs is BACK, and n is not one.");
/*
* Now, specifically for a framebuffer object:
* "If a framebuffer object is affected, then each of the
* constants must be one of the values listed in table 17.5."
*
* 17.5 is GL_NONE, and COLOR_ATTACHMENTi, where i <
* MAX_COLOR_ATTACHMENTS - 1
*/
int max_attachments;
glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &max_attachments);
subtest_pass = true;
for (i = 0; i < max_attachments; i++) {
one_buf = GL_COLOR_ATTACHMENT0 + i;
glNamedFramebufferDrawBuffers(framebuffer, 1, &one_buf);
subtest_pass = subtest_pass &&
piglit_check_gl_error(GL_NO_ERROR);
}
PIGLIT_SUBTEST_CONDITION(subtest_pass, pass, "If a framebuffer object is "
"affected, then each of constants must be one of the "
"values listed in table 17.5.");
/*
* "An INVALID_OPERATION error is generated if a framebuffer
* object is affected and any value in bufs is a constant
* from table 17.6, or COLOR_ATTACHMENTm where m is greater
* than or equal to the value of MAX_COLOR_ATTACHMENTS."
*/
subtest_pass = true;
/* Starting at 1, as GL_NONE is valid */
for (i = 1; i < ARRAY_SIZE(table_17_6); i++) {
GLenum err = 0;
glNamedFramebufferDrawBuffers(framebuffer, 1, &table_17_6[i]);
err = glGetError();
if (err != GL_INVALID_OPERATION) {
printf("Expected GL_INVALID_OPERATION with"
" %s but received: %s\n",
piglit_get_gl_enum_name(table_17_6[i]),
piglit_get_gl_error_name(err));
subtest_pass = false;
}
}
one_buf = GL_COLOR_ATTACHMENT0 + max_attachments;
glNamedFramebufferDrawBuffers(framebuffer, 1, &one_buf);
subtest_pass = subtest_pass &&
piglit_check_gl_error(GL_INVALID_OPERATION);
PIGLIT_SUBTEST_CONDITION(subtest_pass, pass, "INVALID_OPERATION error is "
"generated if a framebuffer object is affected and any "
"value in bufs is a constant from table 17.6, or "
"COLOR_ATTACHMENTm where m is greater than or equal "
"to the value of MAX_COLOR_ATTACHMENTS.");
/*
* "An INVALID_OPERATION error is generated if a buffer other
* than NONE is specified more than once in the array pointed
* to by bufs"
*/
bufs[0] = bufs[1] = GL_FRONT_LEFT;
glNamedFramebufferDrawBuffers(framebuffer, 2, bufs);
PIGLIT_SUBTEST_ERROR(GL_INVALID_OPERATION, pass, "INVALID_OPERATION error "
"is generated if a buffer other than NONE is specified "
"more than once in the array pointed to by bufs.");
/*
* From OpenGL 4.5 spec:
* "An INVALID_ENUM error is generated if any value in bufs is
* FRONT, LEFT, RIGHT, or FRONT_AND_BACK . This restriction
* applies to both the default framebuffer and framebuffer
* objects, and exists because these constants may themselves
* refer to multiple buffers, as shown in table 17.4."
*/
subtest_pass = true;
for (i = 0; i < ARRAY_SIZE(multiple_buffers); i++) {
GLenum err = 0;
bool local_pass = true;
glNamedFramebufferDrawBuffers(default_framebuffer, 1,
&multiple_buffers[i]);
err = glGetError();
local_pass = local_pass && (err == GL_INVALID_ENUM);
glNamedFramebufferDrawBuffers(framebuffer, 1,
&multiple_buffers[i]);
err = glGetError();
local_pass = local_pass && (err == GL_INVALID_ENUM);
if (!local_pass)
printf("Expected GL_INVALID_ENUM with"
" %s but received: %s\n",
piglit_get_gl_enum_name(table_17_6_and_back[i]),
piglit_get_gl_error_name(err));
subtest_pass = subtest_pass && local_pass;
}
PIGLIT_SUBTEST_CONDITION(subtest_pass, pass, "INVALID_ENUM error is "
"generated if any value in bufs is FRONT, LEFT,"
" RIGHT, or FRONT_AND_BACK ");
/* clean up */
glDeleteFramebuffers(1, &framebuffer);
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result
piglit_display(void)
{
GLint max_bind_points = 0;
GLuint q, num_prims;
bool pass = true, test = true;
GLfloat *v, *w;
int i;
/* init the transform feedback buffers */
glGenBuffers(3, xfb_buf);
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, xfb_buf[2]);
piglit_check_gl_error(GL_NO_ERROR);
/* Fetch the number of bind points */
glGetIntegerv(GL_MAX_TRANSFORM_FEEDBACK_BUFFERS, &max_bind_points);
PIGLIT_SUBTEST_ERROR(GL_NO_ERROR, pass, "fetch maximum number of bind "
"points");
if (piglit_khr_no_error)
goto valid_calls;
/* bind a non-existing transform feedback BO */
glTransformFeedbackBufferBase(1337, 0, 0);
PIGLIT_SUBTEST_ERROR(GL_INVALID_OPERATION, pass,
"bind non-existing transform feedback BO");
/* bind a non-existing output BO */
glTransformFeedbackBufferBase(0, 0, 1337);
PIGLIT_SUBTEST_ERROR(GL_INVALID_VALUE, pass, "bind a non-existing "
"output BO");
/* bind to a negative index */
glTransformFeedbackBufferBase(0, -1, xfb_buf[2]);
PIGLIT_SUBTEST_ERROR(GL_INVALID_VALUE, pass, "bind negative index");
/* bind to an index == max */
glTransformFeedbackBufferBase(0, max_bind_points, xfb_buf[2]);
PIGLIT_SUBTEST_ERROR(GL_INVALID_VALUE, pass, "bind to index == "
"max_bind_points (%i)", max_bind_points);
valid_calls:
/* Set up the transform feedback buffer */
for (i = 0; i < 2; i++) {
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, xfb_buf[i]);
glBufferData(GL_TRANSFORM_FEEDBACK_BUFFER,
xfb_buf_size, NULL, GL_STREAM_READ);
glTransformFeedbackBufferBase(0, i, xfb_buf[i]);
piglit_check_gl_error(GL_NO_ERROR);
}
/* Set up the query that checks the # of primitives handled */
glGenQueries(1, &q);
glBeginQuery(GL_PRIMITIVES_GENERATED, q);
piglit_check_gl_error(GL_NO_ERROR);
/* do the transform feedback */
glBeginTransformFeedback(GL_POINTS);
glBindBuffer(GL_ARRAY_BUFFER, input_buf);
glDrawArrays(GL_POINTS, 0, NUM_INPUTS);
glEndTransformFeedback();
glEndQuery(GL_PRIMITIVES_GENERATED);
/* check the number of primitives */
glGetQueryObjectuiv(q, GL_QUERY_RESULT, &num_prims);
glDeleteQueries(1, &q);
printf("%u primitives generated:\n", num_prims);
if (num_prims != NUM_INPUTS) {
printf("Incorrect number of prims generated.\n");
printf("Found %u, expected %u\n", num_prims, NUM_INPUTS);
pass = false;
test = false;
}
/* check the result */
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, xfb_buf[0]);
v = glMapBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, GL_READ_ONLY);
piglit_check_gl_error(GL_NO_ERROR);
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, xfb_buf[1]);
w = glMapBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, GL_READ_ONLY);
piglit_check_gl_error(GL_NO_ERROR);
for (i = 0; i < num_prims; i++) {
printf("%2d: (%2.0g, %2.0g) : ", i, v[i], w[i]);
if (!equal(v[i], out1_ret[i]) || !equal(w[i], out2_ret[i])) {
printf("NOK, expected (%2.0g, %2.0g)\n",
out1_ret[i], out2_ret[i]);
test = false;
} else
printf("OK\n");
}
PIGLIT_SUBTEST_CONDITION(test, pass, "general test");
piglit_present_results();
/* clean-up everything */
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, xfb_buf[0]);
glUnmapBuffer(GL_TRANSFORM_FEEDBACK_BUFFER);
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, xfb_buf[1]);
glUnmapBuffer(GL_TRANSFORM_FEEDBACK_BUFFER);
glDeleteBuffers(3, xfb_buf);
glDeleteBuffers(1, &input_buf);
glDeleteVertexArrays(1, &vao);
glDeleteProgram(prog);
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}