X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fmaterials%2Fpbrmaterial.cpp;h=ebd3321f2268a05054c05f086c035e5b88fdb39a;hb=b0db98d71aeb32d9e57315b8a06ff4068aeccbca;hp=7c73996fd2f7b8e91af2ab4eb27d08fd5592de70;hpb=cb7db94f7837e6a3be037d07575dc248177d9426;p=libs%2Fgl.git

diff --git a/source/materials/pbrmaterial.cpp b/source/materials/pbrmaterial.cpp
index 7c73996f..ebd3321f 100644
--- a/source/materials/pbrmaterial.cpp
+++ b/source/materials/pbrmaterial.cpp
@@ -1,4 +1,9 @@
+#include "framebuffer.h"
+#include "mesh.h"
 #include "pbrmaterial.h"
+#include "renderer.h"
+#include "resources.h"
+#include "texture2d.h"
 
 using namespace std;
 
@@ -13,10 +18,13 @@ const Tag PbrMaterial::texture_tags[] =
 	Tag("roughness_map"),
 	Tag("occlusion_map"),
 	Tag("emission_map"),
+	Tag("fresnel_lookup"),
 	Tag()
 };
 
-PbrMaterial::PbrMaterial()
+PbrMaterial::PbrMaterial():
+	fresnel_lookup(get_or_create_fresnel_lookup()),
+	fresnel_sampler(Resources::get_global().get<Sampler>("_linear_clamp.samp"))
 {
 	set_base_color(0.8f);
 	set_metalness(0.0f);
@@ -24,6 +32,38 @@ PbrMaterial::PbrMaterial()
 	set_emission(0.0f);
 }
 
+const Texture2D &PbrMaterial::get_or_create_fresnel_lookup()
+{
+	Resources &resources = Resources::get_global();
+
+	static const string name = "_pbr_fresnel_lookup.tex";
+	Texture2D *fresnel_lookup = resources.find<Texture2D>(name);
+	if(fresnel_lookup)
+		return *fresnel_lookup;
+
+	fresnel_lookup = new Texture2D;
+	fresnel_lookup->storage(RG8, 128, 128, 1);
+	resources.add(name, fresnel_lookup);
+
+	const Program &shprog = resources.get<Program>("_pbr_fresnel_lookup.glsl.shader");
+	ProgramData shdata;
+	shdata.uniform("n_samples", 1024);
+	// Not actually used here, but put it in to satisfy the interface
+	shdata.uniform("roughness", 0.0f);
+
+	const Mesh &mesh = resources.get<Mesh>("_fullscreen_quad.mesh");
+	Framebuffer fresnel_lookup_fbo((COLOR_ATTACHMENT,RG8));
+	fresnel_lookup_fbo.attach(COLOR_ATTACHMENT, *fresnel_lookup);
+	Renderer renderer;
+	renderer.begin();
+	renderer.set_framebuffer(&fresnel_lookup_fbo);
+	renderer.set_shader_program(&shprog, &shdata);
+	mesh.draw(renderer);
+	renderer.end();
+
+	return *fresnel_lookup;
+}
+
 void PbrMaterial::fill_program_info(string &module_name, map<string, int> &spec_values) const
 {
 	module_name = "cooktorrance.glsl";
@@ -37,19 +77,6 @@ void PbrMaterial::fill_program_info(string &module_name, map<string, int> &spec_
 	spec_values["use_emission_map"] = (emission.texture!=0);
 }
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-void PbrMaterial::attach_textures_to(Texturing &texturing, ProgramData &tex_shdata) const
-{
-	attach_texture_to(base_color.texture, texturing, tex_shdata, "base_color_map");
-	attach_texture_to(metalness.texture, texturing, tex_shdata, "metalness_map");
-	attach_texture_to(roughness.texture, texturing, tex_shdata, "roughness_map");
-	attach_texture_to(normal.texture, texturing, tex_shdata, "normal_map");
-	attach_texture_to(occlusion.texture, texturing, tex_shdata, "occlusion_map");
-	attach_texture_to(emission.texture, texturing, tex_shdata, "emission_map");
-}
-#pragma GCC diagnostic pop
-
 const Texture *PbrMaterial::get_texture(Tag tag) const
 {
 	if(tag==texture_tags[0])
@@ -64,10 +91,20 @@ const Texture *PbrMaterial::get_texture(Tag tag) const
 		return occlusion.texture;
 	else if(tag==texture_tags[5])
 		return emission.texture;
+	else if(tag==texture_tags[6])
+		return &fresnel_lookup;
 	else
 		return 0;
 }
 
+const Sampler *PbrMaterial::get_sampler(Tag tag) const
+{
+	if(tag==texture_tags[6])
+		return &fresnel_sampler;
+	else
+		return sampler;
+}
+
 void PbrMaterial::set_base_color(const Color &color)
 {
 	base_color.value = color;
@@ -125,12 +162,6 @@ void PbrMaterial::set_emission_map(const Texture *tex)
 
 DataFile::Loader::ActionMap PbrMaterial::Loader::shared_actions;
 
-PbrMaterial::Loader::Loader(PbrMaterial &m):
-	DerivedObjectLoader<PbrMaterial, Material::PropertyLoader<PbrMaterial> >(m)
-{
-	set_actions(shared_actions);
-}
-
 PbrMaterial::Loader::Loader(PbrMaterial &m, Collection &c):
 	DerivedObjectLoader<PbrMaterial, Material::PropertyLoader<PbrMaterial> >(m, c)
 {