Add an effect for 4:2:2 interleaved YCbCr input (UYVY).

[movit] / effect_chain.cpp

diff --git a/effect_chain.cpp b/effect_chain.cpp
index c6f1e89af7b2cbef25919ff922f9bc6c1bc2258c..b00f214aa0f535e26570bca1f0df258814cc9858 100644 (file)
--- a/effect_chain.cpp
+++ b/effect_chain.cpp
@@ -1,8 +1,7 @@
 #define GL_GLEXT_PROTOTYPES 1
 
-#include <GL/glew.h>
+#include <epoxy/gl.h>
 #include <assert.h>
-#include <locale.h>
 #include <math.h>
 #include <stddef.h>
 #include <stdio.h>
@@ -88,6 +87,7 @@ Node *EffectChain::add_node(Effect *effect)
        node->output_color_space = COLORSPACE_INVALID;
        node->output_gamma_curve = GAMMA_INVALID;
        node->output_alpha_type = ALPHA_INVALID;
+       node->needs_mipmaps = false;
 
        nodes.push_back(node);
        node_map[effect] = node;
@@ -229,7 +229,7 @@ string replace_prefix(const string &text, const string &prefix)
 
 void EffectChain::compile_glsl_program(Phase *phase)
 {
-       string frag_shader = read_file("header.frag");
+       string frag_shader = read_version_dependent_file("header", "frag");
 
        // Create functions for all the texture inputs that we need.
        for (unsigned i = 0; i < phase->inputs.size(); ++i) {
@@ -240,7 +240,7 @@ void EffectChain::compile_glsl_program(Phase *phase)
        
                frag_shader += string("uniform sampler2D tex_") + effect_id + ";\n";
                frag_shader += string("vec4 ") + effect_id + "(vec2 tc) {\n";
-               frag_shader += "\treturn texture2D(tex_" + string(effect_id) + ", tc);\n";
+               frag_shader += "\treturn tex2D(tex_" + string(effect_id) + ", tc);\n";
                frag_shader += "}\n";
                frag_shader += "\n";
        }
@@ -279,9 +279,10 @@ void EffectChain::compile_glsl_program(Phase *phase)
                frag_shader += "\n";
        }
        frag_shader += string("#define INPUT ") + phase->effect_ids[phase->effects.back()] + "\n";
-       frag_shader.append(read_file("footer.frag"));
+       frag_shader.append(read_version_dependent_file("footer", "frag"));
 
-       phase->glsl_program_num = resource_pool->compile_glsl_program(read_file("vs.vert"), frag_shader);
+       string vert_shader = read_version_dependent_file("vs", "vert");
+       phase->glsl_program_num = resource_pool->compile_glsl_program(vert_shader, frag_shader);
 }
 
 // Construct GLSL programs, starting at the given effect and following
@@ -310,6 +311,10 @@ Phase *EffectChain::construct_phase(Node *output, map<Node *, Phase *> *complete
                Node *node = effects_todo_this_phase.top();
                effects_todo_this_phase.pop();
 
+               if (node->effect->needs_mipmaps()) {
+                       node->needs_mipmaps = true;
+               }
+
                // This should currently only happen for effects that are inputs
                // (either true inputs or phase outputs). We special-case inputs,
                // and then deduplicate phase outputs below.
@@ -334,6 +339,21 @@ Phase *EffectChain::construct_phase(Node *output, map<Node *, Phase *> *complete
                                start_new_phase = true;
                        }
 
+                       // Propagate information about needing mipmaps down the chain,
+                       // breaking the phase if we notice an incompatibility.
+                       //
+                       // Note that we cannot do this propagation as a normal pass,
+                       // because it needs information about where the phases end
+                       // (we should not propagate the flag across phases).
+                       if (node->needs_mipmaps) {
+                               if (deps[i]->effect->num_inputs() == 0) {
+                                       Input *input = static_cast<Input *>(deps[i]->effect);
+                                       start_new_phase |= !input->can_supply_mipmaps();
+                               } else {
+                                       deps[i]->needs_mipmaps = true;
+                               }
+                       }
+
                        if (deps[i]->outgoing_links.size() > 1) {
                                if (!deps[i]->effect->is_single_texture()) {
                                        // More than one effect uses this as the input,
@@ -392,7 +412,9 @@ Phase *EffectChain::construct_phase(Node *output, map<Node *, Phase *> *complete
        for (unsigned i = 0; i < phase->effects.size(); ++i) {
                Node *node = phase->effects[i];
                if (node->effect->num_inputs() == 0) {
-                       CHECK(node->effect->set_int("needs_mipmaps", phase->input_needs_mipmaps));
+                       Input *input = static_cast<Input *>(node->effect);
+                       assert(!phase->input_needs_mipmaps || input->can_supply_mipmaps());
+                       CHECK(input->set_int("needs_mipmaps", phase->input_needs_mipmaps));
                }
        }
 
@@ -1329,10 +1351,6 @@ Node *EffectChain::find_output_node()
 
 void EffectChain::finalize()
 {
-       // Save the current locale, and set it to C, so that we can output decimal
-       // numbers with printf and be sure to get them in the format mandated by GLSL.
-       char *saved_locale = setlocale(LC_NUMERIC, "C");
-
        // Output the graph as it is before we do any conversions on it.
        output_dot("step0-start.dot");
 
@@ -1395,7 +1413,6 @@ void EffectChain::finalize()
        assert(phases[0]->inputs.empty());
        
        finalized = true;
-       setlocale(LC_NUMERIC, saved_locale);
 }
 
 void EffectChain::render_to_fbo(GLuint dest_fbo, unsigned width, unsigned height)