Shadow mapping implementation

Partially works, but mostly doesn't.

Change-Id: I415833d07148d2aeae64c0c311e14766ab29ad5e
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@digia.com>

1 files changed, 10 insertions, 8 deletions

diff --git a/src/datavis3d/utils/texturehelper.cpp b/src/datavis3d/utils/texturehelper.cpp
index 4007953f..808ac309 100644
--- a/src/datavis3d/utils/texturehelper.cpp
+++ b/src/datavis3d/utils/texturehelper.cpp
@@ -195,23 +195,25 @@ GLuint TextureHelper::createDepthTexture(const QSize &size, GLuint &frameBuffer)
 {
     GLuint depthtextureid;
 
-    // Create frame buffer
-    glGenFramebuffers(1, &frameBuffer);
-    glBindFramebuffer(GL_FRAMEBUFFER, frameBuffer);
-
     // Create depth texture for the shadow mapping
     glGenTextures(1, &depthtextureid);
     glBindTexture(GL_TEXTURE_2D, depthtextureid);
-    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_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_TO_EDGE);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_FUNC, GL_LEQUAL);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_R_TO_TEXTURE);
-    glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT16, size.width(), size.height(), 0,
-                 GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, size.width(), size.height(), 0,
+                 GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL);
     glBindTexture(GL_TEXTURE_2D, 0);
 
+    // Create frame buffer
+    glGenFramebuffers(1, &frameBuffer);
+    glBindFramebuffer(GL_FRAMEBUFFER, frameBuffer);
+
     // Attach texture to depth attachment
     glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depthtextureid, 0);