x

2 files changed, 64 insertions, 1 deletions

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