X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=ycbcr_input.cpp;h=6e73d3e2015e219e0fc7f1b7a3961515db96e146;hp=eebb864c4ed49e7b9d6a61a68f8b2e2f95487ca5;hb=85f9719bf3519b1f1942738d11601584f5d38725;hpb=4536fdf7952df0d8773c9bf3014fa25a50ca8ecf

diff --git a/ycbcr_input.cpp b/ycbcr_input.cpp
index eebb864..6e73d3e 100644
--- a/ycbcr_input.cpp
+++ b/ycbcr_input.cpp
@@ -11,6 +11,7 @@
 #include "ycbcr_input.h"
 
 using namespace Eigen;
+using namespace std;
 
 namespace {
 
@@ -62,7 +63,6 @@ YCbCrInput::YCbCrInput(const ImageFormat &image_format,
                        unsigned width, unsigned height)
 	: image_format(image_format),
 	  ycbcr_format(ycbcr_format),
-	  needs_update(false),
 	  finalized(false),
 	  needs_mipmaps(false),
 	  width(width),
@@ -98,30 +98,22 @@ YCbCrInput::~YCbCrInput()
 
 void YCbCrInput::finalize()
 {
-	// Create the textures themselves.
-	for (unsigned channel = 0; channel < 3; ++channel) {
-		texture_num[channel] = resource_pool->create_2d_texture(GL_LUMINANCE8, widths[channel], heights[channel]);
-		glBindTexture(GL_TEXTURE_2D, texture_num[channel]);
-		check_error();
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-		check_error();
-	}
-
-	needs_update = true;
 	finalized = true;
 }
 	
-void YCbCrInput::set_gl_state(GLuint glsl_program_num, const std::string& prefix, unsigned *sampler_num)
+void YCbCrInput::set_gl_state(GLuint glsl_program_num, const string& prefix, unsigned *sampler_num)
 {
 	for (unsigned channel = 0; channel < 3; ++channel) {
 		glActiveTexture(GL_TEXTURE0 + *sampler_num + channel);
 		check_error();
-		glBindTexture(GL_TEXTURE_2D, texture_num[channel]);
-		check_error();
 
-		if (needs_update) {
-			// Re-upload the texture.
-			// Copy the pixel data into the PBO.
+		if (texture_num[channel] == 0) {
+			// (Re-)upload the texture.
+			texture_num[channel] = resource_pool->create_2d_texture(GL_LUMINANCE8, widths[channel], heights[channel]);
+			glBindTexture(GL_TEXTURE_2D, texture_num[channel]);
+			check_error();
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+			check_error();
 			glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbos[channel]);
 			check_error();
 			glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
@@ -136,6 +128,9 @@ void YCbCrInput::set_gl_state(GLuint glsl_program_num, const std::string& prefix
 			check_error();
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 			check_error();
+		} else {
+			glBindTexture(GL_TEXTURE_2D, texture_num[channel]);
+			check_error();
 		}
 	}
 
@@ -148,10 +143,9 @@ void YCbCrInput::set_gl_state(GLuint glsl_program_num, const std::string& prefix
 	set_uniform_int(glsl_program_num, prefix, "tex_cr", *sampler_num + 2);
 
 	*sampler_num += 3;
-	needs_update = false;
 }
 
-std::string YCbCrInput::output_fragment_shader()
+string YCbCrInput::output_fragment_shader()
 {
 	float coeff[3], offset[3], scale[3];
 
@@ -219,7 +213,7 @@ std::string YCbCrInput::output_fragment_shader()
 	// Inverting the matrix gives us what we need to go from YCbCr back to RGB.
 	Matrix3d ycbcr_to_rgb = rgb_to_ycbcr.inverse();
 
-	std::string frag_shader;
+	string frag_shader;
 
 	frag_shader = output_glsl_mat3("PREFIX(inv_ycbcr_matrix)", ycbcr_to_rgb);
 
@@ -251,3 +245,13 @@ std::string YCbCrInput::output_fragment_shader()
 	frag_shader += read_file("ycbcr_input.frag");
 	return frag_shader;
 }
+
+void YCbCrInput::invalidate_pixel_data()
+{
+	for (unsigned channel = 0; channel < 3; ++channel) {
+		if (texture_num[channel] != 0) {
+			resource_pool->release_2d_texture(texture_num[channel]);
+			texture_num[channel] = 0;
+		}
+	}
+}