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Mirrored rendering of pointlight shadows, so that they are at the correct positions now, but occlude everything. -- Fabian

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This commit is contained in:
Steffen Fündgens 2015-01-19 18:22:25 +01:00
parent 1940b72b00
commit cf836b151a
3 changed files with 22 additions and 2 deletions
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20
graphics.cc
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@ -61,6 +61,15 @@ void Graphics::init(Level* level) {
} }
framebuffer_cube = SharedFrameBufferObject(new FrameBufferObject()); framebuffer_cube = SharedFrameBufferObject(new FrameBufferObject());
depthTexture_cube = SharedTexture2D( new Texture2D(windowSize, GL_DEPTH_COMPONENT16));
depthTexture_cube->setMinFilter(GL_NEAREST);
depthTexture_cube->setMagFilter(GL_NEAREST);
depthTexture_cube->setWrapS(GL_CLAMP_TO_EDGE);
depthTexture_cube->setWrapT(GL_CLAMP_TO_EDGE);
depthTexture_cube->setCompareMode(GL_COMPARE_REF_TO_TEXTURE);
framebuffer_cube2 = SharedFrameBufferObject(new FrameBufferObject());
framebuffer_cube2->setDepthTexture(depthTexture_cube);
} }
GLFWwindow* Graphics::getWindow() { GLFWwindow* Graphics::getWindow() {
@ -86,11 +95,20 @@ void Graphics::render()
for (unsigned int i_pointlight = 0; i_pointlight<1 && i_pointlight<level->getLights()->size(); i_pointlight++) { for (unsigned int i_pointlight = 0; i_pointlight<1 && i_pointlight<level->getLights()->size(); i_pointlight++) {
// render each side of the cube // render each side of the cube
for (int i_face = 0; i_face<6; i_face++) { for (int i_face = 0; i_face<6; i_face++) {
framebuffer_cube2->bind();
glClear(GL_DEPTH_BUFFER_BIT);
framebuffer_cube->bind();
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_CUBE_MAP_POSITIVE_X + i_face, depth_cubeMaps.at(i_pointlight)->getObjectName(), 0); glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_CUBE_MAP_POSITIVE_X + i_face, depth_cubeMaps.at(i_pointlight)->getObjectName(), 0);
glClear(GL_DEPTH_BUFFER_BIT); glClear(GL_DEPTH_BUFFER_BIT);
glm::mat4 depthViewProjectionMatrix_face = depthProjectionMatrix_pointlights * glm::lookAt(level->getLights()->at(i_pointlight).getPosition(), glm::mat4 depthViewProjectionMatrix_face = depthProjectionMatrix_pointlights * glm::lookAt(level->getLights()->at(i_pointlight).getPosition(),
level->getLights()->at(i_pointlight).getPosition() + looking_directions[i_face], glm::vec3(0.0f, 1.0f, 0.0f)); level->getLights()->at(i_pointlight).getPosition() + looking_directions[i_face], glm::vec3(0.0f, 1.0f, 0.0f));
//level->render(depthShader, false, &depthViewProjectionMatrix_face); level->render(depthShader, false, &depthViewProjectionMatrix_face);
glBindFramebuffer(GL_READ_FRAMEBUFFER, framebuffer_cube->getObjectName());
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer_cube2->getObjectName());
glBlitFramebuffer(0, 0, cube_size, cube_size, cube_size, cube_size, 0, 0, GL_DEPTH_BUFFER_BIT, GL_NEAREST);
glBindFramebuffer(GL_READ_FRAMEBUFFER, framebuffer_cube2->getObjectName());
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer_cube->getObjectName());
glBlitFramebuffer(0, 0, cube_size, cube_size, 0, 0, cube_size, cube_size, GL_DEPTH_BUFFER_BIT, GL_NEAREST);
if (!framebuffer_cube->isFrameBufferObjectComplete()) { if (!framebuffer_cube->isFrameBufferObjectComplete()) {
printf("Framebuffer incomplete, unknown error occured during shadow generation!\n"); printf("Framebuffer incomplete, unknown error occured during shadow generation!\n");
} }

2
graphics.hh
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@ -32,6 +32,8 @@ class Graphics {
ACGL::OpenGL::SharedFrameBufferObject framebuffer; ACGL::OpenGL::SharedFrameBufferObject framebuffer;
std::vector<ACGL::OpenGL::SharedTextureCubeMap> depth_cubeMaps; std::vector<ACGL::OpenGL::SharedTextureCubeMap> depth_cubeMaps;
ACGL::OpenGL::SharedFrameBufferObject framebuffer_cube; ACGL::OpenGL::SharedFrameBufferObject framebuffer_cube;
ACGL::OpenGL::SharedFrameBufferObject framebuffer_cube2;
ACGL::OpenGL::SharedTexture2D depthTexture_cube;
static const int cube_size; static const int cube_size;
Level* level; Level* level;
}; };

2
level.cc
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@ -422,7 +422,7 @@ void Level::render(ACGL::OpenGL::SharedShaderProgram shader, bool lightingPass,
glm::mat4* viewProjectionMatrix, std::vector<glm::mat4>* shadowVPs) { glm::mat4* viewProjectionMatrix, std::vector<glm::mat4>* shadowVPs) {
for(unsigned int i = 0; i<objects.size(); i++) { for(unsigned int i = 0; i<objects.size(); i++) {
// do not project shadow of skydome // do not project shadow of skydome
if(lightingPass || objects.at(i) != skydome) { if(lightingPass || (objects.at(i) != skydome && i!=0)) {
objects.at(i)->render(shader, lightingPass, viewProjectionMatrix, shadowVPs); objects.at(i)->render(shader, lightingPass, viewProjectionMatrix, shadowVPs);
} }
} }