From 1f66d948de19910c4299a18077a1424256275037 Mon Sep 17 00:00:00 2001
From: ansgar <ansgar@5a81b35b-ba03-0410-adc8-b2c5c5119f08>
Date: Sat, 1 May 2010 18:04:17 +0000
Subject: [PATCH] some more scene fx refactoring
git-svn-id: https://dng.biozentrum.unibas.ch/svn/openstructure/branches/new_gfx@2147 5a81b35b-ba03-0410-adc8-b2c5c5119f08
---
modules/gfx/src/CMakeLists.txt | 5 +-
modules/gfx/src/impl/scene_fx.cc | 259 ++++++++++++++++
modules/gfx/src/impl/scene_fx.hh | 45 +++
modules/gfx/src/scene.cc | 280 +-----------------
modules/gfx/src/scene.hh | 9 +-
modules/gfx/src/shader.cc | 23 +-
modules/gfx/src/shader.hh | 3 +
modules/gfx/src/shader/amboccl_fs.glsl | 6 +
.../{convolute1_vs.glsl => quadpp_vs.glsl} | 0
9 files changed, 359 insertions(+), 271 deletions(-)
create mode 100644 modules/gfx/src/impl/scene_fx.cc
create mode 100644 modules/gfx/src/impl/scene_fx.hh
create mode 100644 modules/gfx/src/shader/amboccl_fs.glsl
rename modules/gfx/src/shader/{convolute1_vs.glsl => quadpp_vs.glsl} (100%)
diff --git a/modules/gfx/src/CMakeLists.txt b/modules/gfx/src/CMakeLists.txt
index 8de2ae86c..1e17c9008 100644
--- a/modules/gfx/src/CMakeLists.txt
+++ b/modules/gfx/src/CMakeLists.txt
@@ -192,6 +192,8 @@ if (USE_SHADER)
message("Compiling with Shader Support")
list(APPEND OST_GFX_SOURCES shader.cc)
list(APPEND OST_GFX_HEADERS shader.hh)
+ list(APPEND OST_GFX_SOURCES impl/scene_fx.cc)
+ list(APPEND OST_GFX_IMPL_HEADERS scene_fx.hh)
if (NOT APPLE)
set(OST_GLEW_HEADERS
glew.h
@@ -240,8 +242,9 @@ if (USE_SHADER)
shader/fast_sphere_vs.glsl
shader/fast_sphere_fs.glsl
shader/outline_vs.glsl
- shader/convolute1_vs.glsl
+ shader/quadpp_vs.glsl
shader/convolute1_fs.glsl
+ shader/amboccl_fs.glsl
)
copy_if_different("./" "${SHARED_DATA_PATH}/shader" "${SHADER_FILES}"
"SHADER_TARGETS" ost_gfx)
diff --git a/modules/gfx/src/impl/scene_fx.cc b/modules/gfx/src/impl/scene_fx.cc
new file mode 100644
index 000000000..7e6d8033f
--- /dev/null
+++ b/modules/gfx/src/impl/scene_fx.cc
@@ -0,0 +1,259 @@
+#include "scene_fx.hh"
+
+#include <ost/gfx/gfx_node.hh>
+#include <ost/gfx/shader.hh>
+#include <ost/gfx/scene.hh>
+
+namespace ost { namespace gfx { namespace impl {
+
+void prep_shadow_map(Scene& scene, GLuint texunit, GLuint texid, uint quality)
+{
+ GLint smap_size=256 << quality;
+
+ // modelview transform for the lightsource pov
+ mol::Transform ltrans(scene.GetTransform());
+ ltrans.SetRot(scene.GetLightRot()*scene.GetTransform().GetRot());
+
+ // calculate encompassing box for ortho projection
+ geom::AlignedCuboid bb=scene.GetBoundingBox(ltrans);
+ geom::Vec3 tmin=bb.GetMin();
+ geom::Vec3 tmax=bb.GetMax();
+
+ // render pass 1 - without shadows
+
+ // turn shadowing off for subsequent rendering
+ Shader::Instance().SetShadowMapping(false,0);
+
+ // save overall gl settings
+ glPushAttrib(GL_VIEWPORT_BIT | GL_ENABLE_BIT);
+ // maximize rendering for depth-only information
+ glDisable(GL_LIGHTING);
+ glDisable(GL_FOG);
+ glDisable(GL_COLOR_MATERIAL);
+ glDisable(GL_NORMALIZE);
+ glColorMask(GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE);
+
+ // render scene with only depth components
+ // seen from the light's perspective
+ glViewport(0,0,smap_size,smap_size);
+ glClear(GL_DEPTH_BUFFER_BIT);
+
+ glMatrixMode(GL_PROJECTION);
+ glPushMatrix();
+ glLoadIdentity();
+ glOrtho(tmin[0],tmax[0],tmin[1],tmax[1],-tmax[2],-tmin[2]);
+ //glFrustum(tmin[0],tmax[0],tmin[1],tmax[1],-tmax[2],-tmin[2]);
+ float glpmat[16];
+ glGetv(GL_PROJECTION_MATRIX, glpmat);
+ geom::Mat4 pmat(Transpose(geom::Mat4(glpmat)));
+
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+ glLoadIdentity();
+ glMultMatrix(ltrans.GetTransposedMatrix().Data());
+
+ // only render non-transparent objects for the shadow map
+ scene.GetRootNode()->RenderGL(DEPTH_RENDER_PASS);
+
+ // now get the shadow map
+ glActiveTexture(GL_TEXTURE0+texunit);
+ glBindTexture(GL_TEXTURE_2D, texid);
+
+ glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT,
+ 0,0, smap_size,smap_size, 0);
+
+ // all of the following texture and shader params need to be moved
+ // to a one-time initialization place
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+
+ // assign tex unit 0 to shadow map
+ Shader::Instance().SetShadowMapping(true,texunit);
+
+ // restore settings
+ glPopMatrix();
+ glMatrixMode(GL_PROJECTION);
+ glPopMatrix();
+ glMatrixMode(GL_MODELVIEW);
+
+ glPopAttrib();
+ glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
+
+ glEnable(GL_TEXTURE_2D);
+
+ // set up appropriate texture matrix
+ geom::Mat4 bias(0.5,0.0,0.0,0.5,
+ 0.0,0.5,0.0,0.5,
+ 0.0,0.0,0.5,0.5,
+ 0.0,0.0,0.0,1.0);
+
+ geom::Mat4 texm = bias*pmat*ltrans.GetMatrix();
+
+ glMatrixMode(GL_TEXTURE);
+ // make explicit object instead of temporary to avoid potential crash with Data()
+ geom::Mat4 ttmp=Transpose(texm);
+ glLoadMatrix(ttmp.Data());
+ glMatrixMode(GL_MODELVIEW);
+}
+
+void prep_amb_occlusion(Scene& scene, GLuint texunit, GLuint texid)
+{
+}
+
+void prep_depth_darkening(Scene& scene, GLuint texunit, GLuint texid)
+{
+ Viewport vp=scene.GetViewport();
+ prep_depth_map(scene,vp.width/2,vp.height/2,texunit,texid);
+
+ // kernel is static for now, inside the convolution shader
+
+ // now convolute the depth map with the kernel
+ Shader::Instance().PushProgram();
+ Shader::Instance().Activate("convolute1");
+ GLuint cpr=Shader::Instance().GetCurrentProgram();
+ // assign tex units
+ glUniform1i(glGetUniformLocation(cpr,"data"),1);
+ glUniform1i(glGetUniformLocation(cpr,"vp_width"),vp.width/2);
+ glUniform1i(glGetUniformLocation(cpr,"vp_height"),vp.height/2);
+
+ // set up viewport filling quad to run the fragment shader
+ draw_screen_quad(vp.width/2,vp.height/2,texunit, texid);
+
+ Shader::Instance().PopProgram();
+
+ // mode 1, tex unit 1
+ Shader::Instance().SetDepthMapping(1,texunit);
+}
+
+void prep_depth_map(Scene& scene, unsigned int width, unsigned int height,GLuint texunit, GLuint texid)
+{
+ // render pass 1 - without shadows
+ Shader::Instance().SetShadowMapping(false,0);
+ // save overall gl settings
+ glPushAttrib(GL_ENABLE_BIT | GL_VIEWPORT_BIT | GL_COLOR_BUFFER_BIT);
+ // maximize rendering for depth-only information
+ glDisable(GL_LIGHTING);
+ glDisable(GL_FOG);
+ glDisable(GL_COLOR_MATERIAL);
+ glDisable(GL_NORMALIZE);
+ glColorMask(GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE);
+
+ // render scene with only depth components
+ glClear(GL_DEPTH_BUFFER_BIT);
+ glViewport(0,0,width,height);
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+ glLoadIdentity();
+ glMultMatrix(scene.GetTransform().GetTransposedMatrix().Data());
+ scene.GetRootNode()->RenderGL(DEPTH_RENDER_PASS);
+
+ // now get the depth map
+ glActiveTexture(texunit);
+ glBindTexture(GL_TEXTURE_2D, texid);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+ glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, 0,0, width, height, 0);
+
+ // restore settings
+ glMatrixMode(GL_PROJECTION);
+ glPopMatrix();
+ glMatrixMode(GL_MODELVIEW);
+ glPopMatrix();
+ glPopAttrib();
+ glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
+}
+
+void draw_screen_quad(unsigned int w, unsigned int h, GLuint gltex, GLuint tex_id)
+{
+ glPushAttrib(GL_ENABLE_BIT | GL_VIEWPORT_BIT | GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT | GL_FOG_BIT);
+
+ // setup
+ glDisable(GL_DEPTH_TEST);
+ glDisable(GL_LIGHTING);
+ glDisable(GL_COLOR_MATERIAL);
+ glDisable(GL_FOG);
+ glDisable(GL_CULL_FACE);
+ glDisable(GL_BLEND);
+ glDisable(GL_LINE_SMOOTH);
+ glDisable(GL_POINT_SMOOTH);
+ glClear(GL_COLOR_BUFFER_BIT);
+ glViewport(0,0,w,h);
+ glMatrixMode(GL_PROJECTION);
+ glPushMatrix();
+ glLoadIdentity();
+ glOrtho(0,1,0,1,-1,1);
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+ glLoadIdentity();
+
+ // draw
+ glColor3f(1.0,0.0,1.0);
+ glBegin(GL_QUADS);
+ glTexCoord2f(0.0,0.0);
+ glVertex2f(0.0,0.0);
+ glTexCoord2f(0.0,1.0);
+ glVertex2f(0.0,1.0);
+ glTexCoord2f(1.0,1.0);
+ glVertex2f(1.0,1.0);
+ glTexCoord2f(1.0,0.0);
+ glVertex2f(1.0,0.0);
+ glEnd();
+
+ // grab the result
+ glEnable(GL_TEXTURE_2D);
+ glActiveTexture(gltex);
+ glBindTexture(GL_TEXTURE_2D, tex_id);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+ glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0,0, w, h, 0);
+
+ // restore settings
+ glMatrixMode(GL_PROJECTION);
+ glPopMatrix();
+ glMatrixMode(GL_MODELVIEW);
+ glPopMatrix();
+ glPopAttrib();
+}
+
+// this debug code draws the given texture across the complete screen
+void draw_debug_tex(unsigned int w, unsigned int h, GLuint texid)
+{
+ glPushAttrib(GL_ALL_ATTRIB_BITS);
+ Shader::Instance().PushProgram();
+
+ Shader::Instance().Activate("");
+ glViewport(0,0,w,h);
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(0,1,0,1,-1,1);
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glColor3f(1.0,0.0,1.0);
+ glEnable(GL_TEXTURE_2D);
+ glActiveTexture(GL_TEXTURE0);
+ glBindTexture(GL_TEXTURE_2D, texid);
+ glBegin(GL_QUADS);
+ glTexCoord2f(0.0,0.0);
+ glVertex2f(0.01,0.01);
+ glTexCoord2f(0.0,1.0);
+ glVertex2f(0.01,0.99);
+ glTexCoord2f(1.0,1.0);
+ glVertex2f(0.99,0.99);
+ glTexCoord2f(1.0,0.0);
+ glVertex2f(0.99,0.01);
+ glEnd();
+ glPopAttrib();
+ Shader::Instance().PopProgram();
+}
+
+
+}}} // ns
diff --git a/modules/gfx/src/impl/scene_fx.hh b/modules/gfx/src/impl/scene_fx.hh
new file mode 100644
index 000000000..5c407e8be
--- /dev/null
+++ b/modules/gfx/src/impl/scene_fx.hh
@@ -0,0 +1,45 @@
+//------------------------------------------------------------------------------
+// This file is part of the OpenStructure project <www.openstructure.org>
+//
+// Copyright (C) 2008-2010 by the OpenStructure authors
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License as published by the Free
+// Software Foundation; either version 3.0 of the License, or (at your option)
+// any later version.
+// This library is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
+// details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with this library; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+//------------------------------------------------------------------------------
+#ifndef OST_SCENE_FX_HH
+#define OST_SCENE_FX_HH
+
+#include <ost/gfx/gl_helper.hh>
+
+/*
+ low level code for scene shading effects
+
+ Author: Ansgar Philippsen
+*/
+
+namespace ost { namespace gfx {
+
+class Scene;
+
+namespace impl {
+
+void prep_shadow_map(Scene& scene, GLuint texunit, GLuint texid, uint quality);
+void prep_depth_darkening(Scene& scene, GLuint texunit, GLuint texid);
+void prep_amb_occlusion(Scene& scene, GLuint texunit, GLuint texid);
+void prep_depth_map(Scene& scene, uint, uint, GLuint texunit, GLuint texid);
+void draw_screen_quad(unsigned int w, unsigned int h, GLuint texunit, GLuint texid);
+void draw_debug_tex(unsigned int w, unsigned int h, GLuint texid);
+
+}}} // ns
+
+#endif
diff --git a/modules/gfx/src/scene.cc b/modules/gfx/src/scene.cc
index 181120438..5a8222295 100644
--- a/modules/gfx/src/scene.cc
+++ b/modules/gfx/src/scene.cc
@@ -54,6 +54,7 @@
#if OST_SHADER_SUPPORT_ENABLED
# include "shader.hh"
+# include "impl/scene_fx.hh"
#endif
using boost::bind;
@@ -112,6 +113,7 @@ Scene::Scene():
shadow_quality_(1),
shadow_tex_id_(),
depth_dark_flag_(false),
+ amb_occl_flag_(false),
depth_tex_id_(),
kernel_tex_id_(),
scene_tex_id_(),
@@ -186,6 +188,13 @@ void Scene::SetDepthDarkening(bool f)
RequestRedraw();
}
+void Scene::SetAmbientOcclusion(bool f)
+{
+ amb_occl_flag_=f;
+ // the redraw routine will deal with the Shader
+ RequestRedraw();
+}
+
void Scene::SetShadingMode(const std::string& smode)
{
@@ -498,13 +507,18 @@ void Scene::RenderGL()
if(auto_autoslab_) Autoslab(false, false);
#if OST_SHADER_SUPPORT_ENABLED
+ if(amb_occl_flag_) {
+ impl::prep_amb_occlusion(*this,GL_TEXTURE1, depth_tex_id_);
+ } else {
+ Shader::Instance().SetOcclusionMapping(0,0);
+ }
if(depth_dark_flag_) {
- prep_depth_darkening();
+ impl::prep_depth_darkening(*this,GL_TEXTURE1, depth_tex_id_);
} else {
Shader::Instance().SetDepthMapping(0,0);
}
if(shadow_flag_) {
- prep_shadow_map();
+ impl::prep_shadow_map(*this,GL_TEXTURE0,shadow_tex_id_,shadow_quality_);
} else {
Shader::Instance().SetShadowMapping(0,0);
}
@@ -1571,268 +1585,6 @@ void Scene::update_fog()
glFogf(GL_FOG_END,zfar_+ffar_);
}
-namespace {
-
- void draw_screen_quad(unsigned int w, unsigned int h, GLuint gltex, GLuint tex_id)
- {
- glPushAttrib(GL_ENABLE_BIT | GL_VIEWPORT_BIT | GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT | GL_FOG_BIT);
-
- // setup
- glDisable(GL_DEPTH_TEST);
- glDisable(GL_LIGHTING);
- glDisable(GL_COLOR_MATERIAL);
- glDisable(GL_FOG);
- glDisable(GL_CULL_FACE);
- glDisable(GL_BLEND);
- glDisable(GL_LINE_SMOOTH);
- glDisable(GL_POINT_SMOOTH);
- glClear(GL_COLOR_BUFFER_BIT);
- glViewport(0,0,w,h);
- glMatrixMode(GL_PROJECTION);
- glPushMatrix();
- glLoadIdentity();
- glOrtho(0,1,0,1,-1,1);
- glMatrixMode(GL_MODELVIEW);
- glPushMatrix();
- glLoadIdentity();
-
- // draw
- glColor3f(1.0,0.0,1.0);
- glBegin(GL_QUADS);
- glTexCoord2f(0.0,0.0);
- glVertex2f(0.0,0.0);
- glTexCoord2f(0.0,1.0);
- glVertex2f(0.0,1.0);
- glTexCoord2f(1.0,1.0);
- glVertex2f(1.0,1.0);
- glTexCoord2f(1.0,0.0);
- glVertex2f(1.0,0.0);
- glEnd();
-
- // grab the result
- glEnable(GL_TEXTURE_2D);
- glActiveTexture(gltex);
- glBindTexture(GL_TEXTURE_2D, tex_id);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
- glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0,0, w, h, 0);
-
- // restore settings
- glMatrixMode(GL_PROJECTION);
- glPopMatrix();
- glMatrixMode(GL_MODELVIEW);
- glPopMatrix();
- glPopAttrib();
- }
-
- // this debug code draws the given texture across the complete screen
- void draw_debug_tex(unsigned int w, unsigned int h, GLuint tex_id)
- {
- glPushAttrib(GL_ALL_ATTRIB_BITS);
- Shader::Instance().PushProgram();
-
- Shader::Instance().Activate("");
- glViewport(0,0,w,h);
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glOrtho(0,1,0,1,-1,1);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- glColor3f(1.0,0.0,1.0);
- glEnable(GL_TEXTURE_2D);
- glActiveTexture(GL_TEXTURE0);
- glBindTexture(GL_TEXTURE_2D, tex_id);
- glBegin(GL_QUADS);
- glTexCoord2f(0.0,0.0);
- glVertex2f(0.01,0.01);
- glTexCoord2f(0.0,1.0);
- glVertex2f(0.01,0.99);
- glTexCoord2f(1.0,1.0);
- glVertex2f(0.99,0.99);
- glTexCoord2f(1.0,0.0);
- glVertex2f(0.99,0.01);
- glEnd();
- glPopAttrib();
- Shader::Instance().PopProgram();
- }
-}
-
-void Scene::prep_shadow_map()
-{
-#if OST_SHADER_SUPPORT_ENABLED
- GLint smap_size=256 << shadow_quality_;
-
- // modelview transform for the lightsource pov
- mol::Transform ltrans(transform_);
- ltrans.SetRot(light_rot_*transform_.GetRot());
-
- // calculate encompassing box for ortho projection
- geom::AlignedCuboid bb=this->GetBoundingBox(ltrans);
- const Vec3& tmin=bb.GetMin();
- const Vec3& tmax=bb.GetMax();
-
- // render pass 1 - without shadows
-
- // turn shadowing off for subsequent rendering
- Shader::Instance().SetShadowMapping(false,0);
-
- // save overall gl settings
- glPushAttrib(GL_VIEWPORT_BIT | GL_ENABLE_BIT);
- // maximize rendering for depth-only information
- glDisable(GL_LIGHTING);
- glDisable(GL_FOG);
- glDisable(GL_COLOR_MATERIAL);
- glDisable(GL_NORMALIZE);
- glColorMask(GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE);
-
- // render scene with only depth components
- // seen from the light's perspective
- glViewport(0,0,smap_size,smap_size);
- glClear(GL_DEPTH_BUFFER_BIT);
-
- glMatrixMode(GL_PROJECTION);
- glPushMatrix();
- glLoadIdentity();
- glOrtho(tmin[0],tmax[0],tmin[1],tmax[1],-tmax[2],-tmin[2]);
- //glFrustum(tmin[0],tmax[0],tmin[1],tmax[1],-tmax[2],-tmin[2]);
- float glpmat[16];
- glGetv(GL_PROJECTION_MATRIX, glpmat);
- Mat4 pmat(Transpose(Mat4(glpmat)));
-
- glMatrixMode(GL_MODELVIEW);
- glPushMatrix();
- glLoadIdentity();
- glMultMatrix(ltrans.GetTransposedMatrix().Data());
-
- // only render non-transparent objects for the shadow map
- root_node_->RenderGL(DEPTH_RENDER_PASS);
-
- // now get the shadow map
- glActiveTexture(GL_TEXTURE0);
- glBindTexture(GL_TEXTURE_2D, shadow_tex_id_);
-
- glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT,
- 0,0, smap_size,smap_size, 0);
-
- // all of the following texture and shader params need to be moved
- // to a one-time initialization place
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
-
- // assign tex unit 0 to shadow map
- Shader::Instance().SetShadowMapping(true,0);
-
- // restore settings
- glPopMatrix();
- glMatrixMode(GL_PROJECTION);
- glPopMatrix();
- glMatrixMode(GL_MODELVIEW);
-
- glPopAttrib();
- glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
-
- glEnable(GL_TEXTURE_2D);
-
- // set up appropriate texture matrix
- Mat4 bias(0.5,0.0,0.0,0.5,
- 0.0,0.5,0.0,0.5,
- 0.0,0.0,0.5,0.5,
- 0.0,0.0,0.0,1.0);
-
- Mat4 texm = bias*pmat*ltrans.GetMatrix();
-
- glMatrixMode(GL_TEXTURE);
- // make explicit object instead of temporary to avoid potential crash with Data()
- Mat4 ttmp=Transpose(texm);
- glLoadMatrix(ttmp.Data());
- glMatrixMode(GL_MODELVIEW);
-#endif
-}
-
-void Scene::prep_depth_darkening()
-{
-#if OST_SHADER_SUPPORT_ENABLED
- prep_depth_map(vp_width_/2,vp_height_/2);
- // in unit 1, bound to depth_tex_id_
-
- // kernel is static for now, inside the convolution shader
-
- // now convolute the depth map with the kernel
- Shader::Instance().PushProgram();
- Shader::Instance().Activate("convolute1");
- GLuint cpr=Shader::Instance().GetCurrentProgram();
- // assign tex units
- glUniform1i(glGetUniformLocation(cpr,"data"),1);
- glUniform1i(glGetUniformLocation(cpr,"vp_width"),vp_width_/2);
- glUniform1i(glGetUniformLocation(cpr,"vp_height"),vp_height_/2);
-
- // set up viewport filling quad to run the fragment shader
- draw_screen_quad(vp_width_/2,vp_height_/2,GL_TEXTURE1, depth_tex_id_);
-
- Shader::Instance().PopProgram();
-
- // mode 1, tex unit 1
- Shader::Instance().SetDepthMapping(1,1);
-
-#endif
-}
-
-// returns the depth map in texture 1
-// bound to depth_tex_id_
-void Scene::prep_depth_map(unsigned int w, unsigned int h)
-{
-#if OST_SHADER_SUPPORT_ENABLED
- unsigned int vp_width2=w;
- unsigned int vp_height2=h;
-
- // render pass 1 - without shadows
- Shader::Instance().SetShadowMapping(false,0);
- // save overall gl settings
- glPushAttrib(GL_ENABLE_BIT);
- // maximize rendering for depth-only information
- glDisable(GL_LIGHTING);
- glDisable(GL_FOG);
- glDisable(GL_COLOR_MATERIAL);
- glDisable(GL_NORMALIZE);
- glColorMask(GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE);
-
- // render scene with only depth components
- glClear(GL_DEPTH_BUFFER_BIT);
- glViewport(0,0,vp_width2,vp_height2);
- glMatrixMode(GL_MODELVIEW);
- glPushMatrix();
- glLoadIdentity();
- glMultMatrix(transform_.GetTransposedMatrix().Data());
- root_node_->RenderGL(DEPTH_RENDER_PASS);
-
- // now get the depth map
- glActiveTexture(GL_TEXTURE1);
- glBindTexture(GL_TEXTURE_2D, depth_tex_id_);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
- glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT,
- 0,0, vp_width2, vp_height2, 0);
-
- // restore settings
- glMatrixMode(GL_PROJECTION);
- glPopMatrix();
- glMatrixMode(GL_MODELVIEW);
- glPopMatrix();
- glPopAttrib();
- glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
- glViewport(0,0,vp_width_,vp_height_);
-
-#endif
-}
namespace {
class DirtyAll: public GfxNodeVisitor
diff --git a/modules/gfx/src/scene.hh b/modules/gfx/src/scene.hh
index 142b4c942..f35920a83 100644
--- a/modules/gfx/src/scene.hh
+++ b/modules/gfx/src/scene.hh
@@ -112,6 +112,8 @@ class DLLEXPORT_OST_GFX Scene {
void SetShadowQuality(int q);
void SetDepthDarkening(bool f);
+
+ void SetAmbientOcclusion(bool f);
/// \brief select shading mode
/// one of fallback, basic, default, hf, toon1, toon2
@@ -356,6 +358,9 @@ class DLLEXPORT_OST_GFX Scene {
void RenderText(const TextPrim& t);
+ geom::Vec3 GetLightDir() const {return light_dir_;}
+ geom::Mat3 GetLightRot() const {return light_rot_;}
+
protected:
friend class GfxObj;
friend class GfxNode;
@@ -408,6 +413,7 @@ private:
int shadow_quality_;
GLuint shadow_tex_id_;
bool depth_dark_flag_;
+ bool amb_occl_flag_;
GLuint depth_tex_id_;
GLuint kernel_tex_id_;
GLuint scene_tex_id_;
@@ -437,9 +443,6 @@ private:
void set_near(float n);
void set_far(float f);
void update_fog();
- void prep_shadow_map();
- void prep_depth_darkening();
- void prep_depth_map(uint,uint);
void flag_all_dirty();
void prep_glyphs();
void prep_blur();
diff --git a/modules/gfx/src/shader.cc b/modules/gfx/src/shader.cc
index 982306a52..a3940c457 100644
--- a/modules/gfx/src/shader.cc
+++ b/modules/gfx/src/shader.cc
@@ -148,8 +148,9 @@ void Shader::Setup()
{"fast_sphere_vs.glsl", GL_VERTEX_SHADER},
{"fast_sphere_fs.glsl", GL_FRAGMENT_SHADER},
{"outline_vs.glsl", GL_VERTEX_SHADER},
- {"convolute1_vs.glsl", GL_VERTEX_SHADER},
- {"convolute1_fs.glsl", GL_FRAGMENT_SHADER}
+ {"quadpp_vs.glsl", GL_VERTEX_SHADER},
+ {"convolute1_fs.glsl", GL_FRAGMENT_SHADER},
+ {"amboccl_fs.glsl", GL_FRAGMENT_SHADER}
//////////////////////////////////////////////////////////////////
};
@@ -252,11 +253,18 @@ void Shader::Setup()
}
// convolute1 shader
shader_program_list.clear();
- shader_program_list.push_back(shader_code_map_["convolute1_vs.glsl"]);
+ shader_program_list.push_back(shader_code_map_["quadpp.glsl"]);
shader_program_list.push_back(shader_code_map_["convolute1_fs.glsl"]);
if(link_shader(shader_program_list,"convolute1",shader_program_id)) {
shader_program_map_["convolute1"]=shader_program_id;
}
+ // amb occl shader
+ shader_program_list.clear();
+ shader_program_list.push_back(shader_code_map_["quadpp.glsl"]);
+ shader_program_list.push_back(shader_code_map_["amboccl_fs.glsl"]);
+ if(link_shader(shader_program_list,"amboccl",shader_program_id)) {
+ shader_program_map_["amboccl"]=shader_program_id;
+ }
valid_=true;
}
@@ -328,6 +336,15 @@ void Shader::SetShadowMapping(bool flag, GLuint texid)
UpdateState();
}
+void Shader::SetOcclusionMapping(bool flag, GLuint texid)
+{
+ occl_flag_=flag;
+ if(flag) {
+ occl_map_id_=texid;
+ }
+ UpdateState();
+}
+
void Shader::SetDepthMapping(int mode, GLuint texid)
{
depth_mode_=mode;
diff --git a/modules/gfx/src/shader.hh b/modules/gfx/src/shader.hh
index 32ea8d129..b8938108f 100644
--- a/modules/gfx/src/shader.hh
+++ b/modules/gfx/src/shader.hh
@@ -55,6 +55,7 @@ public:
void SetShadowMapping(bool flag, GLuint texid);
void SetDepthMapping(int mode, GLuint texid);
+ void SetOcclusionMapping(bool flag, GLuint texid);
private:
Shader();
@@ -67,6 +68,8 @@ private:
GLuint shadow_map_id_;
int depth_mode_;
GLuint depth_map_id_;
+ bool occl_flag_;
+ GLuint occl_map_id_;
std::stack<String> program_stack_;
diff --git a/modules/gfx/src/shader/amboccl_fs.glsl b/modules/gfx/src/shader/amboccl_fs.glsl
new file mode 100644
index 000000000..44ad2220d
--- /dev/null
+++ b/modules/gfx/src/shader/amboccl_fs.glsl
@@ -0,0 +1,6 @@
+uniform sampler2D data;
+
+void main()
+{
+ gl_FragColor=texture2D(data,gl_TexCoord[0].xy);
+}
diff --git a/modules/gfx/src/shader/convolute1_vs.glsl b/modules/gfx/src/shader/quadpp_vs.glsl
similarity index 100%
rename from modules/gfx/src/shader/convolute1_vs.glsl
rename to modules/gfx/src/shader/quadpp_vs.glsl
--
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