208 lines
8.7 KiB
C++
208 lines
8.7 KiB
C++
/*
|
|
QGLView
|
|
Copyright (C) 2012 Ivan Pelipenko peri4ko@gmail.com
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "renderer_deferred_shading.h"
|
|
|
|
|
|
RendererDeferredShading::RendererDeferredShading(QGLView * view_): GLRendererBase(view_), fbo(6, true, GL_RGBA16F) {
|
|
shader_fxaa = shader_ds_0 = shader_ds_1 = 0;
|
|
}
|
|
|
|
|
|
void RendererDeferredShading::renderScene() {
|
|
prepareUniform();
|
|
QMatrix4x4 view_matrix = getGLMatrix(GL_MODELVIEW_MATRIX);
|
|
QMatrix4x4 proj_matrix = getGLMatrix(GL_PROJECTION_MATRIX);
|
|
QMatrix4x4 viewprojinv = (proj_matrix * view_matrix).inverted();
|
|
corner_dirs[0] = (QVector4D(-1, -1, 1, 1) * viewprojinv).normalized();
|
|
corner_dirs[1] = (QVector4D( 1, -1, 1, 1) * viewprojinv).normalized();
|
|
corner_dirs[2] = (QVector4D( 1, 1, 1, 1) * viewprojinv).normalized();
|
|
corner_dirs[3] = (QVector4D(-1, 1, 1, 1) * viewprojinv).normalized();
|
|
//qDebug() << corner_dirs[0] << corner_dirs[1] << corner_dirs[2] << corner_dirs[3];
|
|
int passes = (view.lightsCount() - 1) / 8 + 1;
|
|
if (passes < 1) passes = 1;
|
|
fbo.bind();
|
|
int buffs[] = {0, 1, 2, 3};
|
|
fbo.setWriteBuffers(buffs);
|
|
if (white_image_id == 0) {
|
|
glActiveTextureChannel(6);
|
|
white_image_id = ((GLTextureManagerBase*)currentGLTextureManager)->loadTexture(white_image, false);
|
|
glBindTexture(GL_TEXTURE_2D, white_image_id);
|
|
glActiveTextureChannel(0);
|
|
}
|
|
glClearFramebuffer(QColor(0, 0, 0, 0));
|
|
//glEnable(GL_TEXTURE_2D);
|
|
glEnableDepth();
|
|
shader_ds_0->bind();
|
|
setUniform(shader_ds_0);
|
|
shader_ds_0->setUniformValue("z_far", GLfloat(view.depthEnd()));
|
|
shader_ds_0->setUniformValue("z_near", GLfloat(view.depthStart()));
|
|
shader_ds_0->setUniformValue("t0", 0);
|
|
shader_ds_0->setUniformValue("t1", 1);
|
|
shader_ds_0->setUniformValue("t2", 2);
|
|
shader_ds_0->setUniformValue("t3", 3);
|
|
shader_ds_0->setUniformValue("dt", QVector2D(1. / view.viewport()->width(), 1. / view.viewport()->height()));
|
|
renderObjects(GLObjectBase::Solid, 0, shader_ds_0, true, false, false);
|
|
//glReleaseShaders();
|
|
//fbo.release();
|
|
|
|
glResetAllTransforms();
|
|
prepareUniform();
|
|
glSetLightEnabled(false);
|
|
glDisable(GL_BLEND);
|
|
//glBlendFunc(GL_ONE, GL_ONE);
|
|
glDisableDepth();
|
|
shader_ds_1->bind();
|
|
setUniform(shader_ds_1);
|
|
shader_ds_1->setUniformValue("z_far", GLfloat(view.depthEnd()));
|
|
shader_ds_1->setUniformValue("z_near", GLfloat(view.depthStart()));
|
|
shader_ds_1->setUniformValue("t0", 0);
|
|
shader_ds_1->setUniformValue("t1", 1);
|
|
shader_ds_1->setUniformValue("t2", 2);
|
|
shader_ds_1->setUniformValue("t3", 3);
|
|
shader_ds_1->setUniformValue("td", 4);
|
|
shader_ds_1->setUniformValue("back_color", view.backColor());
|
|
shader_ds_1->setUniformValue("mat_proji", proj_matrix.inverted());
|
|
shader_ds_1->setUniformValue("dt", QVector2D(1. / view.viewport()->width(), 1. / view.viewport()->height()));
|
|
fbo.setWriteBuffer(4);
|
|
fbo.bindColorTextures();
|
|
fbo.bindDepthTexture(4);
|
|
glClearFramebuffer(Qt::black, false);
|
|
//QVector<QVector4D> lpos;
|
|
//qDebug() << view_matrix;
|
|
for (int l = 0; l < passes; ++l) {
|
|
fbo.setWriteBuffer(5 - l % 2);
|
|
shader_ds_1->setUniformValue("tb", 4 + l % 2);
|
|
setupDSLights(l, 16, view_matrix);
|
|
//shader_ds_1->setUniformValue("lightsCount", cplc);
|
|
drawFB(shader_ds_1);
|
|
//renderObjects(GLObjectBase::Solid, l, 0, true, true, view.isFogEnabled());
|
|
//renderObjects(GLObjectBase::Transparent, l, 0, true, true, view.isFogEnabled());
|
|
glFlush();
|
|
}
|
|
fbo.release();
|
|
glReleaseShaders();
|
|
glActiveTextureChannel(0);
|
|
glBindTexture(GL_TEXTURE_2D, fbo.colorTexture(4 + passes % 2));
|
|
if (view.isFXAAEnabled()) {
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
shader_fxaa->bind();
|
|
shader_fxaa->setUniformValue("dt", QVector2D(1. / view.viewport()->width(), 1. / view.viewport()->height()));
|
|
} else {
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
}
|
|
glDrawQuad();
|
|
if (view.isFXAAEnabled())
|
|
shader_fxaa->release();
|
|
}
|
|
|
|
|
|
void RendererDeferredShading::reloadShaders() {
|
|
if (shader_fxaa == 0) shader_fxaa = new QGLShaderProgram(view.context());
|
|
if (shader_ds_0 == 0) shader_ds_0 = new QGLShaderProgram(view.context());
|
|
if (shader_ds_1 == 0) shader_ds_1 = new QGLShaderProgram(view.context());
|
|
//if (shader_ds_0 == 0) shader_ds_0 = new QGLShaderProgram(view.context());
|
|
loadShaders(shader_fxaa, "FXAA", "shaders");
|
|
loadShaders(shader_ds_0, "dsl_pass_0", "shaders");
|
|
loadShaders(shader_ds_1, "dsl_pass_1", "shaders");
|
|
}
|
|
|
|
|
|
void RendererDeferredShading::setupShadersTextures(GLObjectBase & object, GLRendererBase::RenderingParameters & rp) {
|
|
shader_ds_0->setUniformValue("has_diffuse", object.material().map_diffuse.bitmap_id != 0);
|
|
shader_ds_0->setUniformValue("has_bump", object.material().map_bump.bitmap_id != 0);
|
|
shader_ds_0->setUniformValue("has_height", object.material().map_relief.bitmap_id != 0);
|
|
shader_ds_0->setUniformValue("bump_scale", object.material().map_bump.color_amount);
|
|
shader_ds_0->setUniformValue("height_scale", object.material().map_relief.color_amount);
|
|
glActiveTextureChannel(6);
|
|
glBindTexture(GL_TEXTURE_2D, white_image_id);
|
|
}
|
|
|
|
|
|
void RendererDeferredShading::setupDSLights(int pass, int lights_per_pass, const QMatrix4x4 & view_matrix) {
|
|
int light_start, light_end, lmax;
|
|
light_start = pass * lights_per_pass;
|
|
light_end = qMin<int>((pass + 1) * lights_per_pass, view.lights().size());
|
|
lmax = light_start + 8;
|
|
amb_light.intensity = (pass == 0 ? 1. : 0.);
|
|
amb_light.setColor(pass == 0 ? view.ambientColor() : Qt::black);
|
|
amb_light.setName("ambient");
|
|
setUniformLight(shader_ds_1, &amb_light, "qgl_AmbientLight", QMatrix4x4());
|
|
amb_light.intensity = 0.;
|
|
QVector<Light*> lv;
|
|
for (int i = light_start; i < light_end; ++i)
|
|
lv << view.lights()[i];
|
|
amb_light.setName("null");
|
|
for (int i = light_end; i < lmax; ++i)
|
|
lv << &amb_light;
|
|
setUniformLights(shader_ds_1, lv, view_matrix);
|
|
}
|
|
|
|
|
|
void RendererDeferredShading::setupAmbientLight(const QColor & a, bool first_pass) {
|
|
|
|
}
|
|
|
|
|
|
void RendererDeferredShading::prepareUniform() {
|
|
pm = getGLMatrix(GL_PROJECTION_MATRIX);
|
|
mvm = getGLMatrix(GL_MODELVIEW_MATRIX);
|
|
mvpm = pm * mvm;
|
|
pim = pm.inverted();
|
|
mvim = mvm.inverted();
|
|
mvpim = mvpm.inverted();
|
|
nm = mvm.normalMatrix();
|
|
}
|
|
|
|
|
|
void RendererDeferredShading::setUniform(QGLShaderProgram * prog) {
|
|
//qDebug() << mvm;
|
|
prog->setUniformValue("qgl_ModelViewMatrix", mvm);
|
|
prog->setUniformValue("qgl_ProjectionMatrix", pm);
|
|
prog->setUniformValue("qgl_ModelViewProjectionMatrix", mvpm);
|
|
prog->setUniformValue("qgl_NormalMatrix", nm);
|
|
prog->setUniformValue("qgl_ModelViewMatrixInverse", mvim);
|
|
prog->setUniformValue("qgl_ProjectionMatrixInverse", pim);
|
|
prog->setUniformValue("qgl_ModelViewProjectionMatrixInverse", mvpim);
|
|
prog->setUniformValue("qgl_ModelViewMatrixTranspose", mvm.transposed());
|
|
prog->setUniformValue("qgl_ProjectionMatrixTranspose", pm.transposed());
|
|
prog->setUniformValue("qgl_ModelViewProjectionMatrixTranspose", mvpm.transposed());
|
|
prog->setUniformValue("qgl_ModelViewMatrixInverseTranspose", mvim.transposed());
|
|
prog->setUniformValue("qgl_ProjectionMatrixInverseTranspose", pim.transposed());
|
|
prog->setUniformValue("qgl_ModelViewProjectionMatrixInverseTranspose", mvpim.transposed());
|
|
}
|
|
|
|
|
|
void RendererDeferredShading::drawFB(QGLShaderProgram * prog) {
|
|
glSetPolygonMode(GL_FILL);
|
|
int loc = prog->attributeLocation("qgl_Color");
|
|
glVertexAttrib3f(loc, 1.f, 1.f, 1.f);
|
|
int locv = prog->attributeLocation("qgl_Vertex"),
|
|
loct = prog->attributeLocation("qgl_Texture"),
|
|
locc = prog->attributeLocation("view_corner");
|
|
glBegin(GL_QUADS);
|
|
glColor3f(1.f, 1.f, 1.f);
|
|
prog->setAttributeValue(locc, corner_dirs[0]); glVertexAttrib2f(loct, 0.f, 0.f); glTexCoord2f(0.f, 0.f); glVertexAttrib2f(locv, -1.f, -1.f); glVertex2f(-1.f, -1.f);
|
|
prog->setAttributeValue(locc, corner_dirs[1]); glVertexAttrib2f(loct, 1.f, 0.f); glTexCoord2f(1.f, 0.f); glVertexAttrib2f(locv, 1.f, -1.f); glVertex2f(1.f, -1.f);
|
|
prog->setAttributeValue(locc, corner_dirs[2]); glVertexAttrib2f(loct, 1.f, 1.f); glTexCoord2f(1.f, 1.f); glVertexAttrib2f(locv, 1.f, 1.f); glVertex2f(1.f, 1.f);
|
|
prog->setAttributeValue(locc, corner_dirs[3]); glVertexAttrib2f(loct, 0.f, 1.f); glTexCoord2f(0.f, 1.f); glVertexAttrib2f(locv, -1.f, 1.f); glVertex2f(-1.f, 1.f);
|
|
glEnd();
|
|
}
|