X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=effect_chain.cpp;h=2ba42e94ae7cc0aa4fd35c6854b2556f8c6f7ee4;hb=ddca8a12a62ffe6b13d86cbd5b3aac75231e8802;hp=1d9aea82429c9e62deff8b4d1176d08f91854455;hpb=34776d3ed2565ee834405e575bf3bfc7f7933e36;p=movit

diff --git a/effect_chain.cpp b/effect_chain.cpp
index 1d9aea8..2ba42e9 100644
--- a/effect_chain.cpp
+++ b/effect_chain.cpp
@@ -32,13 +32,14 @@ using namespace std;
 
 namespace movit {
 
-EffectChain::EffectChain(float aspect_nom, float aspect_denom, ResourcePool *resource_pool, GLenum intermediate_format)
+EffectChain::EffectChain(float aspect_nom, float aspect_denom, ResourcePool *resource_pool)
 	: aspect_nom(aspect_nom),
 	  aspect_denom(aspect_denom),
 	  output_color_rgba(false),
 	  output_color_ycbcr(false),
 	  dither_effect(NULL),
-	  intermediate_format(intermediate_format),
+	  intermediate_format(GL_RGBA16F),
+	  intermediate_transformation(NO_FRAMEBUFFER_TRANSFORMATION),
 	  num_dither_bits(0),
 	  output_origin(OUTPUT_ORIGIN_BOTTOM_LEFT),
 	  finalized(false),
@@ -332,7 +333,14 @@ 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 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";
 
@@ -415,6 +423,15 @@ void EffectChain::compile_glsl_program(Phase *phase)
 			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
@@ -1177,11 +1194,10 @@ void EffectChain::propagate_alpha()
 		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.
+			// 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;
@@ -1866,9 +1882,6 @@ void EffectChain::execute_phase(Phase *phase, bool last_phase,
 		output_textures->insert(make_pair(phase, tex_num));
 	}
 
-	glUseProgram(phase->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);
@@ -1892,12 +1905,15 @@ void EffectChain::execute_phase(Phase *phase, bool last_phase,
 		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(phase->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()) {
@@ -1945,6 +1961,8 @@ void EffectChain::execute_phase(Phase *phase, bool last_phase,
 		node->effect->clear_gl_state();
 	}
 
+	resource_pool->unuse_glsl_program(instance_program_num);
+
 	if (!last_phase) {
 		resource_pool->release_fbo(fbo);
 	}