From d26d8c3e473aa3b0a91ea8a51d2e9b8757871341 Mon Sep 17 00:00:00 2001
From: Mathias Froehlich <Mathias.Froehlich@web.de>
Date: Mon, 31 Jan 2011 21:38:04 +0100
Subject: x

---
 Main.cpp | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 Makefile |  2 +-
 2 files changed, 64 insertions(+), 1 deletion(-)

diff --git a/Main.cpp b/Main.cpp
index 44d1eee..e842bd0 100644
--- a/Main.cpp
+++ b/Main.cpp
@@ -232,6 +232,47 @@ void loadData()
 
 void precompute()
 {
+// #define LOAD_TEXTURE
+// #define DUMP_TEXTURE
+#ifdef LOAD_TEXTURE
+    void* pixels;
+    FILE* f;
+
+    glActiveTexture(GL_TEXTURE0 + irradianceUnit);
+    glGenTextures(1, &irradianceTexture);
+    glBindTexture(GL_TEXTURE_2D, irradianceTexture);
+    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);
+    // glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
+
+    pixels = malloc(sizeof(float)*SKY_W*SKY_H);
+    f = fopen("irradianceTexture.bin", "rb");
+    fread(pixels, sizeof(float), SKY_W*SKY_H, f);
+    fclose(f);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB16F_ARB, SKY_W, SKY_H, 0, GL_RGB, GL_FLOAT, pixels);
+    free(pixels);
+
+    glActiveTexture(GL_TEXTURE0 + inscatterUnit);
+    glGenTextures(1, &inscatterTexture);
+    glBindTexture(GL_TEXTURE_3D, inscatterTexture);
+    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
+    // glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
+
+    pixels = malloc(sizeof(float)*RES_MU_S*RES_NU*RES_MU*RES_R);
+    f = fopen("inscatterTexture.bin", "rb");
+    fread(pixels, sizeof(float), RES_MU_S*RES_NU*RES_MU*RES_R, f);
+    fclose(f);
+    glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA16F_ARB, RES_MU_S * RES_NU, RES_MU, RES_R, 0, GL_RGB, GL_FLOAT, NULL);
+    free(pixels);
+
+#else
+
     glActiveTexture(GL_TEXTURE0 + transmittanceUnit);
     glGenTextures(1, &transmittanceTexture);
     glBindTexture(GL_TEXTURE_2D, transmittanceTexture);
@@ -494,6 +535,28 @@ void precompute()
 
     glFinish();
     cout << "ready." << endl;
+
+#ifdef DUMP_TEXTURE
+    void* pixels;
+    FILE* f;
+    glBindTexture(GL_TEXTURE_2D, irradianceTexture);
+    pixels = malloc(sizeof(float)*SKY_W*SKY_H);
+    glGetTexImage(GL_TEXTURE_2D, 0, GL_RGB, GL_FLOAT, pixels);
+    f = fopen("irradianceTexture.bin", "wb");
+    fwrite(pixels, sizeof(float), SKY_W*SKY_H, f);
+    fclose(f);
+    free(pixels);
+
+    glBindTexture(GL_TEXTURE_3D, inscatterTexture);
+    pixels = malloc(sizeof(float)*RES_MU_S*RES_NU*RES_MU*RES_R);
+    glGetTexImage(GL_TEXTURE_3D, 0, GL_RGB, GL_FLOAT, pixels);
+    f = fopen("inscatterTexture.bin", "wb");
+    fwrite(pixels, sizeof(float), RES_MU_S*RES_NU*RES_MU*RES_R, f);
+    fclose(f);
+    free(pixels);
+#endif
+#endif
+
     glUseProgram(drawProg);
 }
 
diff --git a/Makefile b/Makefile
index 84ad8d7..7f72321 100644
--- a/Makefile
+++ b/Makefile
@@ -1,2 +1,2 @@
-Main:
+Main: Main.cpp
 	$(CXX) -g -o Main Main.cpp -lglut -lGLEW -ltiff -lGL
-- 
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