-#define GL_GLEXT_PROTOTYPES 1
-
#include <epoxy/gl.h>
#include <assert.h>
#include <math.h>
output_color_rgba(false),
output_color_ycbcr(false),
dither_effect(NULL),
+ intermediate_format(GL_RGBA16F),
+ intermediate_transformation(NO_FRAMEBUFFER_TRANSFORMATION),
num_dither_bits(0),
output_origin(OUTPUT_ORIGIN_BOTTOM_LEFT),
finalized(false),
} else {
owns_resource_pool = false;
}
+
+ // Generate a VBO with some data in (shared position and texture coordinate data).
+ float vertices[] = {
+ 0.0f, 2.0f,
+ 0.0f, 0.0f,
+ 2.0f, 0.0f
+ };
+ vbo = generate_vbo(2, GL_FLOAT, sizeof(vertices), vertices);
}
EffectChain::~EffectChain()
if (owns_resource_pool) {
delete resource_pool;
}
+ glDeleteBuffers(1, &vbo);
+ check_error();
}
Input *EffectChain::add_input(Input *input)
assert(ycbcr_format.chroma_subsampling_y == 1);
}
+void EffectChain::change_ycbcr_output_format(const YCbCrFormat &ycbcr_format)
+{
+ assert(output_color_ycbcr);
+ assert(output_ycbcr_format.chroma_subsampling_x == ycbcr_format.chroma_subsampling_x);
+ assert(output_ycbcr_format.chroma_subsampling_y == ycbcr_format.chroma_subsampling_y);
+ assert(fabs(output_ycbcr_format.cb_x_position - ycbcr_format.cb_x_position) < 1e-3);
+ assert(fabs(output_ycbcr_format.cb_y_position - ycbcr_format.cb_y_position) < 1e-3);
+ assert(fabs(output_ycbcr_format.cr_x_position - ycbcr_format.cr_x_position) < 1e-3);
+ assert(fabs(output_ycbcr_format.cr_y_position - ycbcr_format.cr_y_position) < 1e-3);
+
+ output_ycbcr_format = ycbcr_format;
+ if (finalized) {
+ // Find the YCbCrConversionEffect node. We don't store it to avoid
+ // an unneeded ABI break (this can be fixed on next break).
+ for (Node *node : nodes) {
+ if (node->effect->effect_type_id() == "YCbCrConversionEffect") {
+ YCbCrConversionEffect *effect = (YCbCrConversionEffect *)(node->effect);
+ effect->change_output_format(ycbcr_format);
+ }
+ }
+ }
+}
+
Node *EffectChain::add_node(Effect *effect)
{
for (unsigned i = 0; i < nodes.size(); ++i) {
frag_shader += string("uniform sampler2D tex_") + effect_id + ";\n";
frag_shader += string("vec4 ") + effect_id + "(vec2 tc) {\n";
- frag_shader += "\treturn tex2D(tex_" + string(effect_id) + ", tc);\n";
+ frag_shader += "\tvec4 tmp = tex2D(tex_" + string(effect_id) + ", tc);\n";
+
+ if (intermediate_transformation == SQUARE_ROOT_FRAMEBUFFER_TRANSFORMATION &&
+ phase->inputs[i]->output_node->output_gamma_curve == GAMMA_LINEAR) {
+ frag_shader += "\ttmp.rgb *= tmp.rgb;\n";
+ }
+
+ frag_shader += "\treturn tmp;\n";
frag_shader += "}\n";
frag_shader += "\n";
frag_shader_outputs.push_back("RGBA");
}
}
+
+ // If we're bouncing to a temporary texture, signal transformation if desired.
+ if (!phase->output_node->outgoing_links.empty()) {
+ if (intermediate_transformation == SQUARE_ROOT_FRAMEBUFFER_TRANSFORMATION &&
+ phase->output_node->output_gamma_curve == GAMMA_LINEAR) {
+ frag_shader += "#define SQUARE_ROOT_TRANSFORMATION 1\n";
+ }
+ }
+
frag_shader.append(read_file("footer.frag"));
// Collect uniforms from all effects and output them. Note that this needs
}
phase->glsl_program_num = resource_pool->compile_glsl_program(vert_shader, frag_shader, frag_shader_outputs);
+ GLint position_attribute_index = glGetAttribLocation(phase->glsl_program_num, "position");
+ GLint texcoord_attribute_index = glGetAttribLocation(phase->glsl_program_num, "texcoord");
+ if (position_attribute_index != -1) {
+ phase->attribute_indexes.insert(position_attribute_index);
+ }
+ if (texcoord_attribute_index != -1) {
+ phase->attribute_indexes.insert(texcoord_attribute_index);
+ }
// Collect the resulting location numbers for each uniform.
collect_uniform_locations(phase->glsl_program_num, &phase->uniforms_sampler2d);
// and create a GLSL program for it.
assert(!phase->effects.empty());
- // Deduplicate the inputs.
- sort(phase->inputs.begin(), phase->inputs.end());
- phase->inputs.erase(unique(phase->inputs.begin(), phase->inputs.end()), phase->inputs.end());
+ // Deduplicate the inputs, but don't change the ordering e.g. by sorting;
+ // that would be nondeterministic and thus reduce cacheability.
+ // TODO: Make this even more deterministic.
+ vector<Phase *> dedup_inputs;
+ set<Phase *> seen_inputs;
+ for (size_t i = 0; i < phase->inputs.size(); ++i) {
+ if (seen_inputs.insert(phase->inputs[i]).second) {
+ dedup_inputs.push_back(phase->inputs[i]);
+ }
+ }
+ swap(phase->inputs, dedup_inputs);
// Allocate samplers for each input.
phase->input_samplers.resize(phase->inputs.size());
// Actually make the shader for this phase.
compile_glsl_program(phase);
- // Initialize timer objects.
+ // Initialize timers.
if (movit_timer_queries_supported) {
- glGenQueries(1, &phase->timer_query_object);
phase->time_elapsed_ns = 0;
phase->num_measured_iterations = 0;
}
if (alpha_handling == Effect::INPUT_AND_OUTPUT_PREMULTIPLIED_ALPHA ||
alpha_handling == Effect::INPUT_PREMULTIPLIED_ALPHA_KEEP_BLANK) {
+ // This combination (requiring premultiplied alpha, but _not_ requiring
+ // linear light) is illegal, since the combination of premultiplied alpha
+ // and nonlinear inputs is meaningless.
+ assert(node->effect->needs_linear_light());
+
// If the effect has asked for premultiplied alpha, check that it has got it.
if (any_postmultiplied) {
node->output_alpha_type = ALPHA_INVALID;
check_error();
glDisable(GL_DITHER);
check_error();
+ glEnable(GL_FRAMEBUFFER_SRGB);
+ check_error();
// Save original viewport.
GLuint x = 0, y = 0;
glDepthMask(GL_FALSE);
check_error();
- // Generate a VAO. All the phases should have exactly the same vertex attributes,
- // so it's safe to reuse this.
- float vertices[] = {
- 0.0f, 2.0f,
- 0.0f, 0.0f,
- 2.0f, 0.0f
- };
-
+ // Generate a VAO that will be used during the entire execution,
+ // and bind the VBO, since it contains all the data.
GLuint vao;
glGenVertexArrays(1, &vao);
check_error();
glBindVertexArray(vao);
check_error();
-
- GLuint position_vbo = fill_vertex_attribute(phases[0]->glsl_program_num, "position", 2, GL_FLOAT, sizeof(vertices), vertices);
- GLuint texcoord_vbo = fill_vertex_attribute(phases[0]->glsl_program_num, "texcoord", 2, GL_FLOAT, sizeof(vertices), vertices); // Same as vertices.
+ glBindBuffer(GL_ARRAY_BUFFER, vbo);
+ check_error();
+ set<GLint> bound_attribute_indices;
set<Phase *> generated_mipmaps;
Phase *phase = phases[phase_num];
if (do_phase_timing) {
- glBeginQuery(GL_TIME_ELAPSED, phase->timer_query_object);
+ GLuint timer_query_object;
+ if (phase->timer_query_objects_free.empty()) {
+ glGenQueries(1, &timer_query_object);
+ } else {
+ timer_query_object = phase->timer_query_objects_free.front();
+ phase->timer_query_objects_free.pop_front();
+ }
+ glBeginQuery(GL_TIME_ELAPSED, timer_query_object);
+ phase->timer_query_objects_running.push_back(timer_query_object);
}
if (phase_num == phases.size() - 1) {
// Last phase goes to the output the user specified.
CHECK(dither_effect->set_int("output_height", height));
}
}
- execute_phase(phase, phase_num == phases.size() - 1, &output_textures, &generated_mipmaps);
+ execute_phase(phase, phase_num == phases.size() - 1, &bound_attribute_indices, &output_textures, &generated_mipmaps);
if (do_phase_timing) {
glEndQuery(GL_TIME_ELAPSED);
}
glUseProgram(0);
check_error();
- cleanup_vertex_attribute(phases[0]->glsl_program_num, "position", position_vbo);
- cleanup_vertex_attribute(phases[0]->glsl_program_num, "texcoord", texcoord_vbo);
-
+ glBindBuffer(GL_ARRAY_BUFFER, 0);
+ check_error();
+ glBindVertexArray(0);
+ check_error();
glDeleteVertexArrays(1, &vao);
check_error();
// Get back the timer queries.
for (unsigned phase_num = 0; phase_num < phases.size(); ++phase_num) {
Phase *phase = phases[phase_num];
- GLint available = 0;
- while (!available) {
- glGetQueryObjectiv(phase->timer_query_object, GL_QUERY_RESULT_AVAILABLE, &available);
+ for (std::list<GLuint>::iterator timer_it = phase->timer_query_objects_running.begin();
+ timer_it != phase->timer_query_objects_running.end(); ) {
+ GLint timer_query_object = *timer_it;
+ GLint available;
+ glGetQueryObjectiv(timer_query_object, GL_QUERY_RESULT_AVAILABLE, &available);
+ if (available) {
+ GLuint64 time_elapsed;
+ glGetQueryObjectui64v(timer_query_object, GL_QUERY_RESULT, &time_elapsed);
+ phase->time_elapsed_ns += time_elapsed;
+ ++phase->num_measured_iterations;
+ phase->timer_query_objects_free.push_back(timer_query_object);
+ phase->timer_query_objects_running.erase(timer_it++);
+ } else {
+ ++timer_it;
+ }
}
- GLuint64 time_elapsed;
- glGetQueryObjectui64v(phase->timer_query_object, GL_QUERY_RESULT, &time_elapsed);
- phase->time_elapsed_ns += time_elapsed;
- ++phase->num_measured_iterations;
}
}
}
printf("Total: %5.1f ms\n", total_time_ms);
}
-void EffectChain::execute_phase(Phase *phase, bool last_phase, map<Phase *, GLuint> *output_textures, set<Phase *> *generated_mipmaps)
+void EffectChain::execute_phase(Phase *phase, bool last_phase,
+ set<GLint> *bound_attribute_indices,
+ map<Phase *, GLuint> *output_textures,
+ set<Phase *> *generated_mipmaps)
{
GLuint fbo = 0;
if (!last_phase) {
find_output_size(phase);
- GLuint tex_num = resource_pool->create_2d_texture(GL_RGBA16F, phase->output_width, phase->output_height);
+ GLuint tex_num = resource_pool->create_2d_texture(intermediate_format, phase->output_width, phase->output_height);
output_textures->insert(make_pair(phase, tex_num));
}
- const GLuint glsl_program_num = phase->glsl_program_num;
- check_error();
- glUseProgram(glsl_program_num);
- check_error();
-
// Set up RTT inputs for this phase.
for (unsigned sampler = 0; sampler < phase->inputs.size(); ++sampler) {
glActiveTexture(GL_TEXTURE0 + sampler);
glViewport(0, 0, phase->output_width, phase->output_height);
}
+ GLuint instance_program_num = resource_pool->use_glsl_program(phase->glsl_program_num);
+ check_error();
+
// Give the required parameters to all the effects.
unsigned sampler_num = phase->inputs.size();
for (unsigned i = 0; i < phase->effects.size(); ++i) {
Node *node = phase->effects[i];
unsigned old_sampler_num = sampler_num;
- node->effect->set_gl_state(glsl_program_num, phase->effect_ids[node], &sampler_num);
+ node->effect->set_gl_state(instance_program_num, phase->effect_ids[node], &sampler_num);
check_error();
if (node->effect->is_single_texture()) {
// from there.
setup_uniforms(phase);
- glDrawArrays(GL_TRIANGLES, 0, 3);
- check_error();
+ // Clean up old attributes if they are no longer needed.
+ for (set<GLint>::iterator attr_it = bound_attribute_indices->begin();
+ attr_it != bound_attribute_indices->end(); ) {
+ if (phase->attribute_indexes.count(*attr_it) == 0) {
+ glDisableVertexAttribArray(*attr_it);
+ check_error();
+ bound_attribute_indices->erase(attr_it++);
+ } else {
+ ++attr_it;
+ }
+ }
- glUseProgram(0);
- check_error();
+ // Set up the new attributes, if needed.
+ for (set<GLint>::iterator attr_it = phase->attribute_indexes.begin();
+ attr_it != phase->attribute_indexes.end();
+ ++attr_it) {
+ if (bound_attribute_indices->count(*attr_it) == 0) {
+ glEnableVertexAttribArray(*attr_it);
+ check_error();
+ glVertexAttribPointer(*attr_it, 2, GL_FLOAT, GL_FALSE, 0, BUFFER_OFFSET(0));
+ check_error();
+ bound_attribute_indices->insert(*attr_it);
+ }
+ }
+ glDrawArrays(GL_TRIANGLES, 0, 3);
+ check_error();
+
for (unsigned i = 0; i < phase->effects.size(); ++i) {
Node *node = phase->effects[i];
node->effect->clear_gl_state();
}
+ resource_pool->unuse_glsl_program(instance_program_num);
+
if (!last_phase) {
resource_pool->release_fbo(fbo);
}
projects / movit / blobdiff