Changeset 2859 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/DeferredShader.cpp

Timestamp:

08/21/08 16:31:03 (16 years ago)

Author:

mattausch

Message:

 

File:

• GTP/trunk/App/Demos/Vis/FriendlyCulling/src/DeferredShader.cpp (modified) (3 diffs)

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/DeferredShader.cpp

@@ -1 +1 @@
 #include "DeferredShader.h"
-#include "glInterface.h"
+#include "FrameBufferObject.h"
+#include "RenderState.h"
 
 
@@ -9 +10 @@
 {
 
+
+static void PrintGLerror(char *msg)
+{
+        GLenum errCode;
+        const GLubyte *errStr;
+        
+        if ((errCode = glGetError()) != GL_NO_ERROR) 
+        {
+                errStr = gluErrorString(errCode);
+                fprintf(stderr,"OpenGL ERROR: %s: %s\n", errStr, msg);
+        }
+}
+
+
+static CGprogram sCgDeferredProgram;
+static CGparameter sColorsTexParam;
+static CGparameter sPositionsTexParam;
+static CGparameter sNormalsTexParam;
+
+
+DeferredShader::DeferredShader(int w, int h):
+mWidth(w), mHeight(h)
+{}
+
+
+void DeferredShader::Init(CGcontext context)
+{
+        
+        sCgDeferredProgram = 
+                cgCreateProgramFromFile(context, 
+                                                                CG_SOURCE,
+                                                                "src/shaders/deferred.cg", 
+                                                                RenderState::sCgFragmentProfile,
+                                                                "main",
+                                                                NULL);
+
+        if (sCgDeferredProgram != NULL)
+        {
+                cgGLLoadProgram(sCgDeferredProgram);
+
+                // we need size of texture for scaling
+                sPositionsTexParam = cgGetNamedParameter(sCgDeferredProgram, "positions");  
+                sColorsTexParam = cgGetNamedParameter(sCgDeferredProgram, "colors");  
+                sNormalsTexParam = cgGetNamedParameter(sCgDeferredProgram, "normals"); 
+        }
+        else
+                cerr << "deferred program failed to load" << endl;
+
+
+        PrintGLerror("init");
+}
+
+
 void DeferredShader::Render(FrameBufferObject *fbo)
 {
+        GLuint positionsTex = fbo->GetColorBuffer(0)->GetTexture();
+        GLuint colorsTex = fbo->GetColorBuffer(0)->GetTexture();
+        GLuint normalsTex = fbo->GetColorBuffer(0)->GetTexture();
+
         glPushAttrib(GL_VIEWPORT_BIT);
-        glViewport(0, 0, fbo->GetWidth(), fbo->GetHeight());
+        glViewport(0, 0, mWidth, mHeight);
 
         glDisable(GL_ALPHA_TEST);
@@ -35 +93 @@
         cgGLBindProgram(sCgDeferredProgram);
 
+        cgGLSetTextureParameter(sColorsTexParam, colorsTex);
+        cgGLEnableTextureParameter(sColorsTexParam);
+
         cgGLSetTextureParameter(sPositionsTexParam, positionsTex);
         cgGLEnableTextureParameter(sPositionsTexParam);
-
-        cgGLSetTextureParameter(sColorsTexParam, colorsTex);
-        cgGLEnableTextureParameter(sColorsTexParam);
 
         cgGLSetTextureParameter(sNormalsTexParam, normalsTex);