faerbit/Saxum
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Changing shadow map sampler from sampler2D to sampler2Dshadow and removing now useless colour texture.

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This commit is contained in:
Faerbit 2014-12-04 13:21:20 +01:00
parent fe0535036f
commit 049819c47a
4 changed files with 19 additions and 28 deletions
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7
Shader/depth.fsh
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@ -1,10 +1,7 @@
#version 150
out vec4 fragmentDepth;
out float fragmentDepth;
void main() {
fragmentDepth.r = gl_FragCoord.z;
fragmentDepth.g = gl_FragCoord.z;
fragmentDepth.b = gl_FragCoord.z;
fragmentDepth.a = 1.0;
fragmentDepth = gl_FragCoord.z;
}

13
Shader/phong.fsh
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@ -8,7 +8,7 @@ in vec4 shadowCoord;
out vec4 oColor;
uniform sampler2D uTexture;
uniform sampler2D shadowMap;
uniform sampler2DShadow shadowMap;
uniform vec3 ambientColor;
uniform float ambientFactor;
uniform float diffuseFactor;
@ -59,13 +59,16 @@ void main()
}
// shadows
float bias = 0.005;
float bias = 0.001;
vec3 biasedShadowCoord = vec3(shadowCoord);
biasedShadowCoord.z = shadowCoord.z - bias;
float visibility = 1.0;
if (shadowCoord.x > 0.0 && shadowCoord.x < 1.0) {
if (shadowCoord.y > 0.0 && shadowCoord.y < 1.0) {
if (texture(shadowMap, shadowCoord.xy).z < shadowCoord.z-bias) {
visibility = 0.5;
}
visibility = texture(shadowMap, biasedShadowCoord);
//if (texture(shadowMap, vec3(shadowCoord), bias) < shadowCoord.z) {
//visibility = 0.5;
//}
}
}

24
graphics.cc
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@ -29,20 +29,13 @@ void Graphics::init() {
lightingShader = ShaderProgramCreator("phong").attributeLocations(
vao->getAttributeLocations()).create();
depthTexture_depth = SharedTexture2D( new Texture2D(windowSize, GL_DEPTH24_STENCIL8));
depthTexture_depth->setMinFilter(GL_NEAREST);
depthTexture_depth->setMagFilter(GL_NEAREST);
depthTexture_depth->setWrapS(GL_CLAMP_TO_EDGE);
depthTexture_depth->setWrapT(GL_CLAMP_TO_EDGE);
depthTexture_colour = SharedTexture2D( new Texture2D(windowSize));
depthTexture_colour->setMinFilter(GL_LINEAR);
depthTexture_colour->setMagFilter(GL_LINEAR);
depthTexture_colour->setWrapS(GL_CLAMP_TO_EDGE);
depthTexture_colour->setWrapT(GL_CLAMP_TO_EDGE);
depthTexture = SharedTexture2D( new Texture2D(glm::vec2(windowSize.x, windowSize.y), GL_DEPTH24_STENCIL8));
depthTexture->setMinFilter(GL_LINEAR);
depthTexture->setMagFilter(GL_LINEAR);
depthTexture->setCompareMode(GL_COMPARE_REF_TO_TEXTURE);
framebuffer = SharedFrameBufferObject(new FrameBufferObject());
framebuffer->attachColorTexture("fragmentDepth", depthTexture_colour);
framebuffer->setDepthTexture(depthTexture_depth);
framebuffer->setDepthTexture(depthTexture);
framebuffer->validate();
depthShader = ShaderProgramCreator("depth")
@ -63,7 +56,7 @@ void Graphics::render(Level* level)
{
// render depth texture for sun
framebuffer->bind();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClear(GL_DEPTH_BUFFER_BIT);
depthShader->use();
glm::vec3 sunVector = (level->getCameraCenter()->getPosition() + level->getDirectionalLight()->getPosition());
glm::mat4 depthViewProjectionMatrix = glm::ortho<float>(-20, 20, -20, 20, -20, 40) *
@ -95,7 +88,7 @@ void Graphics::render(Level* level)
glm::mat4 depthBiasMVP = biasMatrix*depthViewProjectionMatrix;
lightingShader->setUniform("shadowMVP", depthBiasMVP);
lightingShader->setTexture("shadowMap", depthTexture_colour, 2);
lightingShader->setTexture("shadowMap", depthTexture, 1);
//set lighting parameters
if (level->getLights().size() > 0) {
@ -149,8 +142,7 @@ void Graphics::render(Level* level)
void Graphics::resize(glm::uvec2 windowSize) {
this->windowSize = windowSize;
depthTexture_depth->resize(windowSize);
depthTexture_colour->resize(windowSize);
depthTexture->resize(glm::vec2(windowSize.x, windowSize.y));
}
glm::mat4 Graphics::buildFrustum( float phiInDegree, float _near, float _far, float aspectRatio) {

3
graphics.hh
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@ -30,8 +30,7 @@ class Graphics {
GLFWwindow* window;
ACGL::OpenGL::SharedShaderProgram lightingShader;
ACGL::OpenGL::SharedShaderProgram depthShader;
ACGL::OpenGL::SharedTexture2D depthTexture_depth;
ACGL::OpenGL::SharedTexture2D depthTexture_colour;
ACGL::OpenGL::SharedTexture2D depthTexture;
ACGL::OpenGL::SharedFrameBufferObject framebuffer;
};