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removed shadowmapping

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This commit is contained in:
Benjamin Kyd
2019-02-20 17:55:36 +00:00
parent 7e3e7324ad
commit b36dd004dc
5 changed files with 8 additions and 799 deletions
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405
OpenGL/playground/CMakeCache.txt
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@@ -1,405 +0,0 @@
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@echo "The following are some of the valid targets for this Makefile:"
@echo "... all (the default if no target is provided)"
@echo "... clean"
@echo "... depend"
@echo "... rebuild_cache"
@echo "... output"
@echo "... edit_cache"
@echo "... src/glad.o"
@echo "... src/glad.i"
@echo "... src/glad.s"
@echo "... src/main.o"
@echo "... src/main.i"
@echo "... src/main.s"
@echo "... src/object.o"
@echo "... src/object.i"
@echo "... src/object.s"
@echo "... src/shader.o"
@echo "... src/shader.i"
@echo "... src/shader.s"
.PHONY : help
#=============================================================================
# Special targets to cleanup operation of make.
# Special rule to run CMake to check the build system integrity.
# No rule that depends on this can have commands that come from listfiles
# because they might be regenerated.
cmake_check_build_system:
$(CMAKE_COMMAND) -H$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR) --check-build-system CMakeFiles/Makefile.cmake 0
.PHONY : cmake_check_build_system

49
OpenGL/playground/cmake_install.cmake
View File

@@ -1,49 +0,0 @@
# Install script for directory: /home/ben/Programming/examples/OpenGL/playground
# Set the install prefix
if(NOT DEFINED CMAKE_INSTALL_PREFIX)
set(CMAKE_INSTALL_PREFIX "/usr/local")
endif()
string(REGEX REPLACE "/$" "" CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
# Set the install configuration name.
if(NOT DEFINED CMAKE_INSTALL_CONFIG_NAME)
if(BUILD_TYPE)
string(REGEX REPLACE "^[^A-Za-z0-9_]+" ""
CMAKE_INSTALL_CONFIG_NAME "${BUILD_TYPE}")
else()
set(CMAKE_INSTALL_CONFIG_NAME "Debug")
endif()
message(STATUS "Install configuration: \"${CMAKE_INSTALL_CONFIG_NAME}\"")
endif()
# Set the component getting installed.
if(NOT CMAKE_INSTALL_COMPONENT)
if(COMPONENT)
message(STATUS "Install component: \"${COMPONENT}\"")
set(CMAKE_INSTALL_COMPONENT "${COMPONENT}")
else()
set(CMAKE_INSTALL_COMPONENT)
endif()
endif()
# Install shared libraries without execute permission?
if(NOT DEFINED CMAKE_INSTALL_SO_NO_EXE)
set(CMAKE_INSTALL_SO_NO_EXE "1")
endif()
# Is this installation the result of a crosscompile?
if(NOT DEFINED CMAKE_CROSSCOMPILING)
set(CMAKE_CROSSCOMPILING "FALSE")
endif()
if(CMAKE_INSTALL_COMPONENT)
set(CMAKE_INSTALL_MANIFEST "install_manifest_${CMAKE_INSTALL_COMPONENT}.txt")
else()
set(CMAKE_INSTALL_MANIFEST "install_manifest.txt")
endif()
string(REPLACE ";" "\n" CMAKE_INSTALL_MANIFEST_CONTENT
"${CMAKE_INSTALL_MANIFEST_FILES}")
file(WRITE "/home/ben/Programming/examples/OpenGL/playground/${CMAKE_INSTALL_MANIFEST}"
"${CMAKE_INSTALL_MANIFEST_CONTENT}")

5
OpenGL/playground/resources/shaders/phong.frag
View File

@@ -16,15 +16,10 @@ vec3 objectColour = vec3(0.58, 0.61, 0.627);
vec3 lightColour = vec3(0.1, 0.45, 0.9); vec3 lightColour = vec3(0.1, 0.45, 0.9);
float calculateShadow(vec4 fragPosLightSpace) { float calculateShadow(vec4 fragPosLightSpace) {
// perform perspective divide
vec3 projCoords = fragPosLightSpace.xyz / fragPosLightSpace.w; vec3 projCoords = fragPosLightSpace.xyz / fragPosLightSpace.w;
// transform to [0,1] range
projCoords = projCoords * 0.5 + 0.5; projCoords = projCoords * 0.5 + 0.5;
// get closest depth value from light's perspective (using [0,1] range fragPosLight as coords)
float closestDepth = texture(shadowMap, projCoords.xy).r; float closestDepth = texture(shadowMap, projCoords.xy).r;
// get depth of current fragment from light's perspective
float currentDepth = projCoords.z; float currentDepth = projCoords.z;
// check whether current frag pos is in shadow
float shadow = currentDepth > closestDepth ? 1.0 : 0.0; float shadow = currentDepth > closestDepth ? 1.0 : 0.0;
return shadow; return shadow;

80
OpenGL/playground/src/main.cpp
View File

@@ -71,7 +71,7 @@ int main(int argc, char** argv) {
std::cout << "-------- Version 1.0 --------" << std::endl; std::cout << "-------- Version 1.0 --------" << std::endl;
std::cout << "----- ©Benjamin Kyd 2019 ----" << std::endl; std::cout << "----- ©Benjamin Kyd 2019 ----" << std::endl;
std::cout << "-----------------------------" << std::endl; std::cout << "-----------------------------" << std::endl;
std::cout << std::endl; std::cout << std::endl;
// Get global variables ready // Get global variables ready
Logger logger; Logger logger;
@@ -91,8 +91,8 @@ int main(int argc, char** argv) {
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1); SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
// MXAA // MXAA
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1); SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 4); SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 4);
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "4"); SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "4");
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4); SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4);
@@ -122,11 +122,11 @@ int main(int argc, char** argv) {
// LoadOBJ(logger, "./resources/dragon.obj", vertices, normals, elements); // LoadOBJ(logger, "./resources/dragon.obj", vertices, normals, elements);
LoadOBJ(logger, "./resources/lucy.obj", vertices, normals, elements); LoadOBJ(logger, "./resources/lucy.obj", vertices, normals, elements);
std::vector<glm::vec3> toGPU; std::vector<glm::vec3> toGPU;
toGPU.insert(toGPU.end(), vertices.begin(), vertices.end()); toGPU.insert(toGPU.end(), vertices.begin(), vertices.end());
toGPU.insert(toGPU.end(), normals.begin(), normals.end()); toGPU.insert(toGPU.end(), normals.begin(), normals.end());
// Generate a vertex array object // Generate a vertex array object
GLuint vao; GLuint vao;
glGenVertexArrays(1, &vao); glGenVertexArrays(1, &vao);
@@ -152,7 +152,7 @@ int main(int argc, char** argv) {
// Load, compile, apply and link shader programs // Load, compile, apply and link shader programs
Shader simpleShader{ logger }; Shader simpleShader{ logger };
simpleShader.load("./resources/shaders/phong").attatch().link().use(); simpleShader.load("./resources/shaders/phong").attatch().link().use();
GLint posAttrib = glGetAttribLocation(simpleShader.getProgram(), "position"); GLint posAttrib = glGetAttribLocation(simpleShader.getProgram(), "position");
glEnableVertexAttribArray(posAttrib); glEnableVertexAttribArray(posAttrib);
glVertexAttribPointer(posAttrib, 3, GL_FLOAT, GL_FALSE, 0, 0); glVertexAttribPointer(posAttrib, 3, GL_FLOAT, GL_FALSE, 0, 0);
@@ -167,7 +167,7 @@ int main(int argc, char** argv) {
// Model matrice // Model matrice
glm::mat4 model = glm::mat4(1.0f); glm::mat4 model = glm::mat4(1.0f);
model = glm::translate(model, {-170.0f, -170.0f, -170.0f}); model = glm::translate(model, { -170.0f, -170.0f, -170.0f });
model = glm::rotate(model, glm::radians(-160.0f), glm::vec3(0.0f, 1.0f, 0.0f)); model = glm::rotate(model, glm::radians(-160.0f), glm::vec3(0.0f, 1.0f, 0.0f));
// Gets uniform for model matrice, to be used later // Gets uniform for model matrice, to be used later
GLint uniTrans = glGetUniformLocation(simpleShader.getProgram(), "model"); GLint uniTrans = glGetUniformLocation(simpleShader.getProgram(), "model");
@@ -191,54 +191,11 @@ int main(int argc, char** argv) {
glUniformMatrix4fv(uniProj, 1, GL_FALSE, glm::value_ptr(proj)); glUniformMatrix4fv(uniProj, 1, GL_FALSE, glm::value_ptr(proj));
glm::vec3 lightPos = {300.0f, 300.0f, 0.0f}; //100.0f}; glm::vec3 lightPos = { -2.0f, 4.0f, -1.0f };
// Make shadowmap
glm::vec3 lightInvDir = glm::vec3(0.5f, 2, 2);
// Compute the MVP matrix from the light's point of view
glm::mat4 depthProjectionMatrix = glm::ortho<float>(-10,10,-10,10,-10,20);
glm::mat4 depthViewMatrix = glm::lookAt(lightInvDir, glm::vec3(0,0,0), glm::vec3(0,1,0));
glm::mat4 depthModelMatrix = glm::mat4(1.0);
glm::mat4 depthMVP = depthProjectionMatrix * depthViewMatrix * depthModelMatrix;
Shader depthShader{ logger };
depthShader.load("./resources/shaders/shadowmap").attatch().link().use();
GLuint unilightSpaceMatrix = glGetUniformLocation(depthShader.getProgram(), "lightSpaceMatrix");
GLint uniLightTrans = glGetUniformLocation(depthShader.getProgram(), "model");
glUniformMatrix4fv(uniLightTrans, 1, GL_FALSE, glm::value_ptr(model));
GLuint depthMapFBO;
glGenFramebuffers(1, &depthMapFBO);
const unsigned int SHADOW_WIDTH = 1280, SHADOW_HEIGHT = 720;
unsigned int depthMap;
glGenTextures(1, &depthMap);
glBindTexture(GL_TEXTURE_2D, depthMap);
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT,
SHADOW_WIDTH, SHADOW_HEIGHT, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
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_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glBindFramebuffer(GL_FRAMEBUFFER, depthMapFBO);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depthMap, 0);
glDrawBuffer(GL_NONE);
glReadBuffer(GL_NONE);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
GLint uniLight = glGetUniformLocation(simpleShader.getProgram(), "lightpos"); GLint uniLight = glGetUniformLocation(simpleShader.getProgram(), "lightpos");
glUniformMatrix3fv(uniLight, 1, GL_FALSE, glm::value_ptr(lightPos)); glUniformMatrix3fv(uniLight, 1, GL_FALSE, glm::value_ptr(lightPos));
GLint uniMlightSpaceMatrix = glGetUniformLocation(simpleShader.getProgram(), "lightSpaceMatrix");
simpleShader.use(); simpleShader.use();
glEnable(GL_DEPTH_TEST); glEnable(GL_DEPTH_TEST);
glEnable(GL_MULTISAMPLE); glEnable(GL_MULTISAMPLE);
@@ -278,23 +235,6 @@ int main(int argc, char** argv) {
} }
} }
// 1. first render to depth map
glViewport(0, 0, SHADOW_WIDTH, SHADOW_HEIGHT);
glBindFramebuffer(GL_FRAMEBUFFER, depthMapFBO);
glClear(GL_DEPTH_BUFFER_BIT);
depthShader.use();
float near_plane = 1.0f, far_plane = 1000.0f;
glm::mat4 lightProjection = glm::ortho(-10.0f, 10.0f, -10.0f, 10.0f, near_plane, far_plane);
glm::mat4 lightView = glm::lookAt(glm::vec3(-2.0f, 4.0f, -1.0f),
glm::vec3( 0.0f, 0.0f, 0.0f),
glm::vec3( 0.0f, 1.0f, 0.0f));
glm::mat4 lightSpaceMatrix = lightProjection * lightView;
glUniformMatrix4fv(unilightSpaceMatrix, 1, GL_FALSE, glm::value_ptr(lightSpaceMatrix));
glDrawElements(GL_TRIANGLES, elements.size(), GL_UNSIGNED_SHORT, 0);
glViewport(0, 0, 1280, 720); glViewport(0, 0, 1280, 720);
glBindFramebuffer(GL_FRAMEBUFFER, 0); glBindFramebuffer(GL_FRAMEBUFFER, 0);
@@ -303,10 +243,6 @@ int main(int argc, char** argv) {
glClearBufferfv(GL_COLOR, 0, clear); glClearBufferfv(GL_COLOR, 0, clear);
simpleShader.use(); simpleShader.use();
glUniformMatrix4fv(uniMlightSpaceMatrix, 1, GL_FALSE, glm::value_ptr(lightSpaceMatrix));
glBindTexture(GL_TEXTURE_2D, depthMap);
glDrawElements(GL_TRIANGLES, elements.size(), GL_UNSIGNED_SHORT, 0); glDrawElements(GL_TRIANGLES, elements.size(), GL_UNSIGNED_SHORT, 0);
// Swap // Swap