#include <stdio.h>
#include <unistd.h>
+#include "gpu_timers.h"
#include "util.h"
#include <algorithm>
float vr_alpha = 1.0f, vr_delta = 0.25f, vr_gamma = 0.25f;
bool enable_timing = true;
+bool detailed_timing = false;
bool enable_variational_refinement = true; // Just for debugging.
bool enable_interpolation = false;
GLuint densify_program;
GLuint densify_vao;
- GLuint uniform_patch_size, uniform_patch_spacing;
+ GLuint uniform_patch_size;
GLuint uniform_image0_tex, uniform_image1_tex, uniform_flow_tex;
};
glVertexAttribPointer(position_attrib, 2, GL_FLOAT, GL_FALSE, 0, BUFFER_OFFSET(0));
uniform_patch_size = glGetUniformLocation(densify_program, "patch_size");
- uniform_patch_spacing = glGetUniformLocation(densify_program, "patch_spacing");
uniform_image0_tex = glGetUniformLocation(densify_program, "image0_tex");
uniform_image1_tex = glGetUniformLocation(densify_program, "image1_tex");
uniform_flow_tex = glGetUniformLocation(densify_program, "flow_tex");
float(patch_size_pixels) / level_width,
float(patch_size_pixels) / level_height);
- float patch_spacing_x = float(level_width - patch_size_pixels) / (width_patches - 1);
- float patch_spacing_y = float(level_height - patch_size_pixels) / (height_patches - 1);
- if (width_patches == 1) patch_spacing_x = 0.0f; // Avoid infinities.
- if (height_patches == 1) patch_spacing_y = 0.0f;
- glProgramUniform2f(densify_program, uniform_patch_spacing,
- patch_spacing_x / level_width,
- patch_spacing_y / level_height);
-
glViewport(0, 0, level_width, level_height);
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE);
class SOR {
public:
SOR();
- void exec(GLuint diff_flow_tex, GLuint equation_tex, GLuint smoothness_x_tex, GLuint smoothness_y_tex, int level_width, int level_height, int num_iterations);
+ void exec(GLuint diff_flow_tex, GLuint equation_tex, GLuint smoothness_x_tex, GLuint smoothness_y_tex, int level_width, int level_height, int num_iterations, ScopedTimer *sor_timer);
private:
PersistentFBOSet<1> fbos;
uniform_phase = glGetUniformLocation(sor_program, "phase");
}
-void SOR::exec(GLuint diff_flow_tex, GLuint equation_tex, GLuint smoothness_x_tex, GLuint smoothness_y_tex, int level_width, int level_height, int num_iterations)
+void SOR::exec(GLuint diff_flow_tex, GLuint equation_tex, GLuint smoothness_x_tex, GLuint smoothness_y_tex, int level_width, int level_height, int num_iterations, ScopedTimer *sor_timer)
{
glUseProgram(sor_program);
fbos.render_to(diff_flow_tex);
for (int i = 0; i < num_iterations; ++i) {
- glProgramUniform1i(sor_program, uniform_phase, 0);
- glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
- glTextureBarrier();
- glProgramUniform1i(sor_program, uniform_phase, 1);
- glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
- if (i != num_iterations - 1) {
+ {
+ ScopedTimer timer("Red pass", sor_timer);
+ glProgramUniform1i(sor_program, uniform_phase, 0);
+ glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glTextureBarrier();
}
+ {
+ ScopedTimer timer("Black pass", sor_timer);
+ glProgramUniform1i(sor_program, uniform_phase, 1);
+ glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+ if (i != num_iterations - 1) {
+ glTextureBarrier();
+ }
+ }
}
}
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
-class GPUTimers {
-public:
- void print();
- pair<GLuint, GLuint> begin_timer(const string &name, int level);
-
-private:
- struct Timer {
- string name;
- int level;
- pair<GLuint, GLuint> query;
- };
- vector<Timer> timers;
-};
-
-pair<GLuint, GLuint> GPUTimers::begin_timer(const string &name, int level)
-{
- if (!enable_timing) {
- return make_pair(0, 0);
- }
-
- GLuint queries[2];
- glGenQueries(2, queries);
- glQueryCounter(queries[0], GL_TIMESTAMP);
-
- Timer timer;
- timer.name = name;
- timer.level = level;
- timer.query.first = queries[0];
- timer.query.second = queries[1];
- timers.push_back(timer);
- return timer.query;
-}
-
-void GPUTimers::print()
-{
- for (const Timer &timer : timers) {
- // NOTE: This makes the CPU wait for the GPU.
- GLuint64 time_start, time_end;
- glGetQueryObjectui64v(timer.query.first, GL_QUERY_RESULT, &time_start);
- glGetQueryObjectui64v(timer.query.second, GL_QUERY_RESULT, &time_end);
- //fprintf(stderr, "GPU time used = %.1f ms\n", time_elapsed / 1e6);
- for (int i = 0; i < timer.level * 2; ++i) {
- fprintf(stderr, " ");
- }
- fprintf(stderr, "%-30s %4.1f ms\n", timer.name.c_str(), GLint64(time_end - time_start) / 1e6);
- }
-}
-
-// A simple RAII class for timing until the end of the scope.
-class ScopedTimer {
-public:
- ScopedTimer(const string &name, GPUTimers *timers)
- : timers(timers), level(0)
- {
- query = timers->begin_timer(name, level);
- }
-
- ScopedTimer(const string &name, ScopedTimer *parent_timer)
- : timers(parent_timer->timers),
- level(parent_timer->level + 1)
- {
- query = timers->begin_timer(name, level);
- }
-
- ~ScopedTimer()
- {
- end();
- }
-
- void end()
- {
- if (enable_timing && !ended) {
- glQueryCounter(query.second, GL_TIMESTAMP);
- ended = true;
- }
- }
-
-private:
- GPUTimers *timers;
- int level;
- pair<GLuint, GLuint> query;
- bool ended = false;
-};
-
class TexturePool {
public:
GLuint get_texture(GLenum format, GLuint width, GLuint height);
// Note that these are to/from the same texture.
{
ScopedTimer timer("SOR", &varref_timer);
- sor.exec(du_dv_tex, equation_tex, smoothness_x_tex, smoothness_y_tex, level_width, level_height, 5);
+ sor.exec(du_dv_tex, equation_tex, smoothness_x_tex, smoothness_y_tex, level_width, level_height, 5, &timer);
}
}
pool.release_texture(temp_tex[2]);
pool.release_texture(depth_tex);
- GLuint output_tex = pool.get_texture(GL_RGB8, width, height);
+ GLuint output_tex = pool.get_texture(GL_RGBA8, width, height);
{
ScopedTimer timer("Blend", &total_timer);
blend.exec(tex0, tex1, flow_tex, output_tex, width, height, alpha);
}
}
+// Not relevant for RGB.
+void flip_coordinate_system(uint8_t *dense_flow, unsigned width, unsigned height)
+{
+}
+
void write_flow(const char *filename, const float *dense_flow, unsigned width, unsigned height)
{
FILE *flowfp = fopen(filename, "wb");
fclose(flowfp);
}
+// Not relevant for RGB.
+void write_flow(const char *filename, const uint8_t *dense_flow, unsigned width, unsigned height)
+{
+ assert(false);
+}
+
void write_ppm(const char *filename, const float *dense_flow, unsigned width, unsigned height)
{
FILE *fp = fopen(filename, "wb");
fclose(fp);
}
+void write_ppm(const char *filename, const uint8_t *rgba, unsigned width, unsigned height)
+{
+ unique_ptr<uint8_t[]> rgb_line(new uint8_t[width * 3 + 1]);
+
+ FILE *fp = fopen(filename, "wb");
+ fprintf(fp, "P6\n%d %d\n255\n", width, height);
+ for (unsigned y = 0; y < height; ++y) {
+ unsigned y2 = height - 1 - y;
+ for (size_t x = 0; x < width; ++x) {
+ memcpy(&rgb_line[x * 3], &rgba[(y2 * width + x) * 4], 4);
+ }
+ fwrite(rgb_line.get(), width * 3, 1, fp);
+ }
+ fclose(fp);
+}
+
+struct FlowType {
+ using type = float;
+ static constexpr GLenum gl_format = GL_RG;
+ static constexpr GLenum gl_type = GL_FLOAT;
+ static constexpr int num_channels = 2;
+};
+
+struct RGBAType {
+ using type = uint8_t;
+ static constexpr GLenum gl_format = GL_RGBA;
+ static constexpr GLenum gl_type = GL_UNSIGNED_BYTE;
+ static constexpr int num_channels = 4;
+};
+
+template <class Type>
void finish_one_read(GLuint width, GLuint height)
{
+ using T = typename Type::type;
+ constexpr int bytes_per_pixel = Type::num_channels * sizeof(T);
+
assert(!reads_in_progress.empty());
ReadInProgress read = reads_in_progress.front();
reads_in_progress.pop_front();
- unique_ptr<float[]> flow(new float[width * height * 2]);
- void *buf = glMapNamedBufferRange(read.pbo, 0, width * height * 2 * sizeof(float), GL_MAP_READ_BIT); // Blocks if the read isn't done yet.
- memcpy(flow.get(), buf, width * height * 2 * sizeof(float));
+ unique_ptr<T[]> flow(new typename Type::type[width * height * Type::num_channels]);
+ void *buf = glMapNamedBufferRange(read.pbo, 0, width * height * bytes_per_pixel, GL_MAP_READ_BIT); // Blocks if the read isn't done yet.
+ memcpy(flow.get(), buf, width * height * bytes_per_pixel); // TODO: Unneeded for RGBType, since flip_coordinate_system() does nothing.:
glUnmapNamedBuffer(read.pbo);
spare_pbos.push(read.pbo);
}
}
+template <class Type>
void schedule_read(GLuint tex, GLuint width, GLuint height, const char *filename0, const char *filename1, const char *flow_filename, const char *ppm_filename)
{
+ using T = typename Type::type;
+ constexpr int bytes_per_pixel = Type::num_channels * sizeof(T);
+
if (spare_pbos.empty()) {
- finish_one_read(width, height);
+ finish_one_read<Type>(width, height);
}
assert(!spare_pbos.empty());
reads_in_progress.emplace_back(ReadInProgress{ spare_pbos.top(), filename0, filename1, flow_filename, ppm_filename });
glBindBuffer(GL_PIXEL_PACK_BUFFER, spare_pbos.top());
spare_pbos.pop();
- glGetTextureImage(tex, 0, GL_RG, GL_FLOAT, width * height * 2 * sizeof(float), nullptr);
+ glGetTextureImage(tex, 0, Type::gl_format, Type::gl_type, width * height * bytes_per_pixel, nullptr);
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
}
DISComputeFlow compute_flow(width1, height1);
GLuint final_tex = compute_flow.exec(tex0_gray, tex1_gray, DISComputeFlow::RESIZE_FLOW_TO_FULL_SIZE);
- schedule_read(final_tex, width1, height1, filename0, filename1, flow_filename, "flow.ppm");
+ schedule_read<FlowType>(final_tex, width1, height1, filename0, filename1, flow_filename, "flow.ppm");
compute_flow.release_texture(final_tex);
// See if there are more flows on the command line (ie., more than three arguments),
GLuint final_tex = compute_flow.exec(tex0_gray, tex1_gray, DISComputeFlow::RESIZE_FLOW_TO_FULL_SIZE);
- schedule_read(final_tex, width1, height1, filename0, filename1, flow_filename, "");
+ schedule_read<FlowType>(final_tex, width1, height1, filename0, filename1, flow_filename, "");
compute_flow.release_texture(final_tex);
}
glDeleteTextures(1, &tex0_gray);
glDeleteTextures(1, &tex1_gray);
while (!reads_in_progress.empty()) {
- finish_one_read(width1, height1);
+ finish_one_read<FlowType>(width1, height1);
}
}
GLuint pbos[5];
glCreateBuffers(5, pbos);
for (int i = 0; i < 5; ++i) {
- glNamedBufferData(pbos[i], width1 * height1 * 2 * sizeof(float), nullptr, GL_STREAM_READ);
+ glNamedBufferData(pbos[i], width1 * height1 * 4 * sizeof(uint8_t), nullptr, GL_STREAM_READ);
spare_pbos.push(pbos[i]);
}
DISComputeFlow compute_flow(width1, height1);
GrayscaleConversion gray;
Interpolate interpolate(width1, height1, finest_level);
- //Interpolate interpolate(width1, height1, 0);
int levels = find_num_levels(width1, height1);
GLuint tex0_gray, tex1_gray;
GLuint backward_flow_tex = compute_flow.exec(tex1_gray, tex0_gray, DISComputeFlow::DO_NOT_RESIZE_FLOW);
for (int frameno = 1; frameno < 60; ++frameno) {
+ char ppm_filename[256];
+ snprintf(ppm_filename, sizeof(ppm_filename), "interp%04d.ppm", frameno);
+
float alpha = frameno / 60.0f;
GLuint interpolated_tex = interpolate.exec(tex0, tex1, forward_flow_tex, backward_flow_tex, width1, height1, alpha);
- unique_ptr<uint8_t[]> rgb(new uint8_t[width1 * height1 * 3]);
- glGetTextureImage(interpolated_tex, 0, GL_RGB, GL_UNSIGNED_BYTE, width1 * height1 * 3, rgb.get());
-
- char buf[256];
- snprintf(buf, sizeof(buf), "interp%04d.ppm", frameno);
- FILE *fp = fopen(buf, "wb");
- fprintf(fp, "P6\n%d %d\n255\n", width1, height1);
- for (unsigned y = 0; y < height1; ++y) {
- unsigned y2 = height1 - 1 - y;
- fwrite(rgb.get() + y2 * width1 * 3, width1 * 3, 1, fp);
- }
- fclose(fp);
+ schedule_read<RGBAType>(interpolated_tex, width1, height1, filename0, filename1, "", ppm_filename);
+ interpolate.release_texture(interpolated_tex);
}
- //schedule_read(interpolated_tex, width1, height1, filename0, filename1, "", "halfflow.ppm");
- //interpolate.release_texture(interpolated_tex);
- //finish_one_read(width1, height1);
+ while (!reads_in_progress.empty()) {
+ finish_one_read<RGBAType>(width1, height1);
+ }
}
int main(int argc, char **argv)
{ "intensity-relative-weight", required_argument, 0, 'i' }, // delta.
{ "gradient-relative-weight", required_argument, 0, 'g' }, // gamma.
{ "disable-timing", no_argument, 0, 1000 },
+ { "detailed-timing", no_argument, 0, 1003 },
{ "ignore-variational-refinement", no_argument, 0, 1001 }, // Still calculates it, just doesn't apply it.
{ "interpolate", no_argument, 0, 1002 }
};
case 1002:
enable_interpolation = true;
break;
+ case 1003:
+ detailed_timing = true;
+ break;
default:
fprintf(stderr, "Unknown option '%s'\n", argv[option_index]);
exit(1);
projects / nageru / blobdiff