void end_audio_frame() {
if (frame_offset == 0)
// No audio added; blip_end_frame() dislikes being called with an
// offset of 0
return;
assert(!(is_backwards_frame && frame_offset != get_frame_len()));
// Bring the signal level at the end of the frame to zero as outlined in
// set_audio_signal_level()
set_audio_signal_level(0);
blip_end_frame(blip, frame_offset);
if (playback_started) {
// Fudge playback rate by an amount proportional to the difference
// between the desired and current buffer fill levels to try to steer
// towards it
double const fudge_factor = 1.0 + 2*max_adjust*(0.5 - fill_level());
blip_set_rates(blip, cpu_clock_rate, sample_rate*fudge_factor);
}
else {
if (fill_level() >= 0.5) {
start_audio_playback();
playback_started = true;
}
}
int const n_samples = blip_read_samples(blip, blip_samples, ARRAY_LEN(blip_samples), 0);
// We expect to read all samples from blip_buf. If something goes wrong and
// we don't, clear the buffer to prevent data piling up in blip_buf's
// buffer (which lacks bounds checking).
int const avail = blip_samples_avail(blip);
if (avail != 0) {
printf("Warning: didn't read all samples from blip_buf (%d samples remain) - dropping samples\n",
avail);
blip_clear(blip);
}
#ifdef RECORD_MOVIE
add_movie_audio_frame(blip_samples, n_samples);
#endif
// Save the samples to the audio ring buffer
lock_audio();
write_samples(blip_samples, n_samples);
unlock_audio();
}
enum piglit_result
piglit_display(void)
{
bool pass = true;
float red[4] = {1.0, 0.0, 0.0, 0.0};
float green[4] = {0.0, 1.0, 0.0, 0.0};
GLuint q, texture;
int tex_size = 64;
int i;
glClearColor(0.5, 0.5, 0.5, 0.5);
glClear(GL_COLOR_BUFFER_BIT);
/* Set up a texture object with green at level 0, red elsewhere */
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_LINEAR_MIPMAP_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
for (i = 0; tex_size / (1 << i) > 0; i++)
fill_level(i, tex_size / (1 << i), i == 0 ? green : red);
glGenQueries(1, &q);
/* Generate query fail. */
glBeginQuery(GL_SAMPLES_PASSED, q);
glEndQuery(GL_SAMPLES_PASSED);
/* Mipmap generation should not be affected by conditional rendering. */
glBeginConditionalRenderNV(q, GL_QUERY_WAIT_NV);
glGenerateMipmapEXT(GL_TEXTURE_2D);
glEndConditionalRenderNV();
/* This should draw level 1, since starting window size is 32
* and texture is 64.
*/
glEnable(GL_TEXTURE_2D);
piglit_draw_rect_tex(-1, -1, 2, 2,
0, 0, 1, 1);
glDisable(GL_TEXTURE_2D);
pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
green);
glutSwapBuffers();
glDeleteQueries(1, &q);
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
enum piglit_result
piglit_display(void)
{
const GLfloat red[4] = {1.0, 0.0, 0.0, 0.0};
const GLfloat blue[4] = {0.0, 0.0, 1.0, 0.0};
GLuint texture;
int i;
GLboolean pass = GL_TRUE;
glClearColor(0, 0, 0, 0);
glClear(GL_COLOR_BUFFER_BIT);
/* Set up a texture object with mipmap generation */
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_LINEAR_MIPMAP_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
/* Set the first level of the new texture to red and display. */
fill_level(0, red);
display_mipmaps(0, 0);
glDeleteTextures(1, &texture);
/* Set up texture object without mipmap generation */
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_LINEAR_MIPMAP_NEAREST);
/* Paint normal blue mipmap set */
for (i = 0; SIZE / (1 << i) > 0; i++)
fill_level(i, blue);
display_mipmaps(0, SIZE);
/* Enable GENERATE_MIPMAP and set the first (and thus all) levels to
* red.
*/
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
fill_level(0, red);
display_mipmaps(0, SIZE * 2);
glDeleteTextures(1, &texture);
pass = pass && check_resulting_mipmaps(0, 0, red);
pass = pass && check_resulting_mipmaps(0, SIZE, blue);
pass = pass && check_resulting_mipmaps(0, SIZE * 2, red);
piglit_present_results();
glFlush();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
static GLboolean
srgb_tex_test(int srgb_format)
{
GLboolean pass = GL_TRUE;
float green[] = {0, 0.3, 0.0, 0};
float expected_green[4];
float expected_srgb_green[4];
GLuint tex;
GLboolean have_decode;
have_decode = piglit_is_extension_supported("GL_EXT_texture_sRGB_decode");
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
fill_level(0, green);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
GL_NEAREST);
glClearColor(0.0, 0.0, 0.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
glEnable(GL_TEXTURE_2D);
piglit_draw_rect_tex(0, 0, 20, 20, 0, 0, 1, 1);
if (have_decode) {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SRGB_DECODE_EXT,
GL_SKIP_DECODE_EXT);
piglit_draw_rect_tex(20, 0, 20, 20, 0, 0, 1, 1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SRGB_DECODE_EXT,
GL_DECODE_EXT);
piglit_draw_rect_tex(40, 0, 20, 20, 0, 0, 1, 1);
}
memcpy(expected_green, green, sizeof(float) * 4);
memcpy(expected_srgb_green, green, sizeof(float) * 4);
expected_srgb_green[1] = nonlinear_to_linear(255.0*green[1]);
if (!piglit_probe_rect_rgb(0, 0, 20, 20, expected_srgb_green))
pass = GL_FALSE;
if (have_decode) {
if (!piglit_probe_rect_rgb(20, 0, 20, 20, expected_green))
pass = GL_FALSE;
if (!piglit_probe_rect_rgb(40, 0, 20, 20, expected_srgb_green))
pass = GL_FALSE;
}
glDeleteTextures(1, &tex);
piglit_present_results();
return pass;
}
