From af169b41fda5fe05d62655b782674eda2bc565e7 Mon Sep 17 00:00:00 2001
From: Hamed Zaghaghi <hamed.zaghaghi@gmail.com>
Date: Tue, 6 Nov 2007 12:16:12 +0000
Subject: 2d Filters updated, now you can use custom filter and write your own
 GLSL shader program to filter rendering result.

---
 .../gameengine/Rasterizer/RAS_2DFilterManager.cpp  | 90 ++++++++++++++--------
 source/gameengine/Rasterizer/RAS_2DFilterManager.h | 12 +--
 source/gameengine/Rasterizer/RAS_IRenderTools.h    |  2 +-
 .../RAS_OpenGLFilters/RAS_Blur2DFilter.h           |  8 +-
 .../RAS_OpenGLFilters/RAS_Dilation2DFilter.h       |  8 +-
 .../RAS_OpenGLFilters/RAS_Erosion2DFilter.h        |  8 +-
 .../RAS_OpenGLFilters/RAS_GrayScale2DFilter.h      |  4 +-
 .../RAS_OpenGLFilters/RAS_Invert2DFilter.h         |  5 +-
 .../RAS_OpenGLFilters/RAS_Laplacian2DFilter.h      |  8 +-
 .../RAS_OpenGLFilters/RAS_Prewitt2DFilter.h        |  8 +-
 .../RAS_OpenGLFilters/RAS_Sepia2DFilter.h          |  5 +-
 .../RAS_OpenGLFilters/RAS_Sharpen2DFilter.h        |  8 +-
 .../RAS_OpenGLFilters/RAS_Sobel2DFilter.h          |  8 +-
 13 files changed, 100 insertions(+), 74 deletions(-)

(limited to 'source/gameengine/Rasterizer')

diff --git a/source/gameengine/Rasterizer/RAS_2DFilterManager.cpp b/source/gameengine/Rasterizer/RAS_2DFilterManager.cpp
index 740a4d7a6b3..8576ea1487c 100644
--- a/source/gameengine/Rasterizer/RAS_2DFilterManager.cpp
+++ b/source/gameengine/Rasterizer/RAS_2DFilterManager.cpp
@@ -12,6 +12,7 @@
 #include "RAS_OpenGLFilters/RAS_Sepia2DFilter.h"
 #include "RAS_OpenGLFilters/RAS_Invert2DFilter.h"
 
+#include "STR_String.h"
 #include "RAS_ICanvas.h"
 #include "RAS_2DFilterManager.h"
 #include <iostream>
@@ -48,12 +49,11 @@ numberoffilters(0),texname(-1)
 
 	int passindex;
 	for(passindex =0; passindex<MAX_RENDER_PASS; passindex++)
+	{
 		m_filters[passindex] = 0;
+		m_enabled[passindex] = 0;
+	}
 
-	int programindex;
-	for(programindex=0; programindex<RAS_2DFILTER_NUMBER_OF_FILTERS; programindex++)
-		m_programs[programindex] = 0;
-	
 }
 
 RAS_2DFilterManager::~RAS_2DFilterManager()
@@ -129,20 +129,31 @@ unsigned int RAS_2DFilterManager::CreateShaderProgram(int filtermode)
 		return 0;
 }
 
-void RAS_2DFilterManager::StartShaderProgram(int filtermode)
+void RAS_2DFilterManager::StartShaderProgram(unsigned int shaderprogram)
 {
     GLint uniformLoc;
-	bgl::blUseProgramObjectARB(m_programs[filtermode]);
-	uniformLoc = bgl::blGetUniformLocationARB(m_programs[filtermode], "sampler0");
+	bgl::blUseProgramObjectARB(shaderprogram);
+	uniformLoc = bgl::blGetUniformLocationARB(shaderprogram, "bgl_RenderedTexture");
     if (uniformLoc != -1)
     {
 		bgl::blUniform1iARB(uniformLoc, 0);
     }
-	uniformLoc = bgl::blGetUniformLocationARB(m_programs[filtermode], "tc_offset");
+	uniformLoc = bgl::blGetUniformLocationARB(shaderprogram, "bgl_TextureCoordinateOffset");
     if (uniformLoc != -1)
     {
         bgl::blUniform2fvARB(uniformLoc, 9, textureoffsets);
     }
+	uniformLoc = bgl::blGetUniformLocationARB(shaderprogram, "bgl_RenderedTextureWidth");
+    if (uniformLoc != -1)
+    {
+		bgl::blUniform1fARB(uniformLoc,texturewidth);
+    }
+	uniformLoc = bgl::blGetUniformLocationARB(shaderprogram, "bgl_RenderedTextureHeight");
+    if (uniformLoc != -1)
+    {
+		bgl::blUniform1fARB(uniformLoc,textureheight);
+    }
+
 }
 
 void RAS_2DFilterManager::EndShaderProgram()
@@ -200,7 +211,7 @@ void RAS_2DFilterManager::UpdateOffsetMatrix(int width, int height)
 
 void RAS_2DFilterManager::RenderFilters(RAS_ICanvas* canvas)
 {
-	if(numberoffilters<=0 || !isshadersupported)
+	if(!isshadersupported)
 		return;
 
 	if(canvaswidth != canvas->GetWidth() || canvasheight != canvas->GetHeight())
@@ -213,7 +224,7 @@ void RAS_2DFilterManager::RenderFilters(RAS_ICanvas* canvas)
 	bool first = true;
 	for(passindex =0; passindex<MAX_RENDER_PASS; passindex++)
 	{
-		if(m_filters[passindex])
+		if(m_filters[passindex] && m_enabled[passindex])
 		{
 			if(first)
 			{
@@ -253,33 +264,48 @@ void RAS_2DFilterManager::RenderFilters(RAS_ICanvas* canvas)
 	}
 }
 
-void RAS_2DFilterManager::EnableFilter(RAS_2DFILTER_MODE mode, int pass)
+void RAS_2DFilterManager::EnableFilter(RAS_2DFILTER_MODE mode, int pass, STR_String& text)
 {
 	if(!isshadersupported)
 		return;
-	if( pass == -1)
+	if(pass<0 || pass>=MAX_RENDER_PASS)
+		return;
+
+	if(mode == RAS_2DFILTER_DISABLED)
 	{
-		if(m_programs[mode] == 0)
-		m_programs[mode] = CreateShaderProgram(mode);
+		m_enabled[pass] = 0;
+		return;
 	}
-	else if( pass < MAX_RENDER_PASS )
+
+	if(mode == RAS_2DFILTER_ENABLED)
 	{
-		if(mode == RAS_2DFILTER_NOFILTER )
-		{
-			if(m_filters[pass] != 0)
-				numberoffilters--;
-			m_filters[pass] = 0;
-		}
-		else
-		{
-			if(!m_programs[mode])
-				m_programs[mode] = CreateShaderProgram(mode);
-			if(m_programs[mode])
-			{
-				if(m_filters[pass] == 0)
-					numberoffilters++;
-				m_filters[pass] = mode;
-			}
-		}
+		m_enabled[pass] = 1;
+		return;
+	}
+
+	if(mode == RAS_2DFILTER_NOFILTER)
+	{
+		if(m_filters[pass])
+			bgl::blDeleteObjectARB(m_filters[pass]);
+		m_enabled[pass] = 0;
+		m_filters[pass] = 0;
+		return;
+	}
+	
+	if(mode == RAS_2DFILTER_CUSTOMFILTER)
+	{
+		if(m_filters[pass])
+			bgl::blDeleteObjectARB(m_filters[pass]);
+		m_filters[pass] = CreateShaderProgram(text.Ptr());
+		m_enabled[pass] = 1;
+		return;
+	}
+
+	if(mode>=RAS_2DFILTER_MOTIONBLUR && mode<=RAS_2DFILTER_INVERT)
+	{
+		if(m_filters[pass])
+			bgl::blDeleteObjectARB(m_filters[pass]);
+		m_filters[pass] = CreateShaderProgram(mode);
+		m_enabled[pass] = 1;
 	}
 }
diff --git a/source/gameengine/Rasterizer/RAS_2DFilterManager.h b/source/gameengine/Rasterizer/RAS_2DFilterManager.h
index e2d9dce170e..45e33db8d2e 100644
--- a/source/gameengine/Rasterizer/RAS_2DFilterManager.h
+++ b/source/gameengine/Rasterizer/RAS_2DFilterManager.h
@@ -10,7 +10,7 @@ class RAS_2DFilterManager
 private:
 	unsigned int	CreateShaderProgram(char* shadersource);
 	unsigned int	CreateShaderProgram(int filtermode);
-	void			StartShaderProgram(int filtermode);
+	void			StartShaderProgram(unsigned int shaderprogram);
 	void			EndShaderProgram();
 
 	float			textureoffsets[18];
@@ -25,6 +25,8 @@ private:
 	bool			isshadersupported;
 public:
 	enum RAS_2DFILTER_MODE {
+		RAS_2DFILTER_ENABLED = -2,
+		RAS_2DFILTER_DISABLED = -1,
 		RAS_2DFILTER_NOFILTER = 0,
 		RAS_2DFILTER_MOTIONBLUR,
 		RAS_2DFILTER_BLUR,
@@ -37,13 +39,13 @@ public:
 		RAS_2DFILTER_GRAYSCALE,
 		RAS_2DFILTER_SEPIA,
 		RAS_2DFILTER_INVERT,
+		RAS_2DFILTER_CUSTOMFILTER,
 		RAS_2DFILTER_NUMBER_OF_FILTERS
 	};
 
-	int	m_filters[MAX_RENDER_PASS];
+	unsigned int	m_filters[MAX_RENDER_PASS];
+	short			m_enabled[MAX_RENDER_PASS];
 
-	unsigned int m_programs[RAS_2DFILTER_NUMBER_OF_FILTERS];
-	
 	RAS_2DFilterManager();
 
 	~RAS_2DFilterManager();
@@ -54,6 +56,6 @@ public:
 
 	void RenderFilters(RAS_ICanvas* canvas);
 
-	void EnableFilter(RAS_2DFILTER_MODE mode, int pass);
+	void EnableFilter(RAS_2DFILTER_MODE mode, int pass, STR_String& text);
 };
 #endif
diff --git a/source/gameengine/Rasterizer/RAS_IRenderTools.h b/source/gameengine/Rasterizer/RAS_IRenderTools.h
index e7cb1c9176f..771c34a595f 100644
--- a/source/gameengine/Rasterizer/RAS_IRenderTools.h
+++ b/source/gameengine/Rasterizer/RAS_IRenderTools.h
@@ -183,7 +183,7 @@ public:
 
 	virtual
 		void
-		Update2DFilter(RAS_2DFilterManager::RAS_2DFILTER_MODE filtermode, int pass)=0;
+		Update2DFilter(RAS_2DFilterManager::RAS_2DFILTER_MODE filtermode, int pass, STR_String& text)=0;
 
 	virtual
 		void
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Blur2DFilter.h b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Blur2DFilter.h
index ae7f56174e6..2b0bdbc4351 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Blur2DFilter.h
+++ b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Blur2DFilter.h
@@ -2,8 +2,8 @@
 #define __RAS_BLUR2DFILTER
 
 char * BlurFragmentShader=STRINGIFY(
-uniform sampler2D sampler0;
-uniform vec2 tc_offset[9];
+uniform sampler2D bgl_RenderedTexture;
+uniform vec2 bgl_TextureCoordinateOffset[9];
 
 void main(void)
 {
@@ -11,8 +11,8 @@ void main(void)
 
     for (int i = 0; i < 9; i++)
     {
-        sample[i] = texture2D(sampler0, 
-                              gl_TexCoord[0].st + tc_offset[i]);
+        sample[i] = texture2D(bgl_RenderedTexture, 
+                              gl_TexCoord[0].st + bgl_TextureCoordinateOffset[i]);
     }
 
     gl_FragColor = (sample[0] + (2.0*sample[1]) + sample[2] + 
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Dilation2DFilter.h b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Dilation2DFilter.h
index 6fd7f867d10..9cf233d549a 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Dilation2DFilter.h
+++ b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Dilation2DFilter.h
@@ -2,8 +2,8 @@
 #define __RAS_DILATION2DFILTER
 
 char * DilationFragmentShader=STRINGIFY(
-uniform sampler2D sampler0;
-uniform vec2 tc_offset[9];
+uniform sampler2D bgl_RenderedTexture;
+uniform vec2 bgl_TextureCoordinateOffset[9];
 
 void main(void)
 {
@@ -12,8 +12,8 @@ void main(void)
 
     for (int i = 0; i < 9; i++)
     {
-        sample[i] = texture2D(sampler0, 
-                              gl_TexCoord[0].st + tc_offset[i]);
+        sample[i] = texture2D(bgl_RenderedTexture, 
+                              gl_TexCoord[0].st + bgl_TextureCoordinateOffset[i]);
         maxValue = max(sample[i], maxValue);
     }
 
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Erosion2DFilter.h b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Erosion2DFilter.h
index a0fc7486447..667da14c10e 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Erosion2DFilter.h
+++ b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Erosion2DFilter.h
@@ -2,8 +2,8 @@
 #define __RAS_EROSION2DFILTER
 
 char * ErosionFragmentShader=STRINGIFY(
-uniform sampler2D sampler0;
-uniform vec2 tc_offset[9];
+uniform sampler2D bgl_RenderedTexture;
+uniform vec2 bgl_TextureCoordinateOffset[9];
 
 void main(void)
 {
@@ -12,8 +12,8 @@ void main(void)
 
     for (int i = 0; i < 9; i++)
     {
-        sample[i] = texture2D(sampler0, 
-                              gl_TexCoord[0].st + tc_offset[i]);
+        sample[i] = texture2D(bgl_RenderedTexture, 
+                              gl_TexCoord[0].st + bgl_TextureCoordinateOffset[i]);
         minValue = min(sample[i], minValue);
     }
 
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_GrayScale2DFilter.h b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_GrayScale2DFilter.h
index c6fc4a0214d..09f58c0a350 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_GrayScale2DFilter.h
+++ b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_GrayScale2DFilter.h
@@ -2,11 +2,11 @@
 #define __RAS_GRAYSCALE2DFILTER
 
 char * GrayScaleFragmentShader=STRINGIFY(
-uniform sampler2D sampler0;
+uniform sampler2D bgl_RenderedTexture;
 
 void main(void)
 {
-	vec4 texcolor = texture2D(sampler0, gl_TexCoord[0].st); 
+	vec4 texcolor = texture2D(bgl_RenderedTexture, gl_TexCoord[0].st); 
 	float gray = dot(texcolor.rgb, vec3(0.299, 0.587, 0.114));
     gl_FragColor = vec4(gray, gray, gray, texcolor.a);
 }
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Invert2DFilter.h b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Invert2DFilter.h
index 34e6fe29cd3..c3b9ee117c0 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Invert2DFilter.h
+++ b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Invert2DFilter.h
@@ -2,12 +2,11 @@
 #define __RAS_INVERT2DFILTER
 
 char * InvertFragmentShader=STRINGIFY(
-uniform sampler2D sampler0;
-uniform vec2 offset[9];
+uniform sampler2D bgl_RenderedTexture;
 
 void main(void)
 {
-	vec4 texcolor = texture2D(sampler0, gl_TexCoord[0].st); 
+	vec4 texcolor = texture2D(bgl_RenderedTexture, gl_TexCoord[0].st); 
 	gl_FragColor.rgb = 1.0 - texcolor.rgb;
     gl_FragColor.a = texcolor.a;
 }
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Laplacian2DFilter.h b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Laplacian2DFilter.h
index f5b44a69c13..684ac4399fa 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Laplacian2DFilter.h
+++ b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Laplacian2DFilter.h
@@ -2,8 +2,8 @@
 #define __RAS_LAPLACION2DFILTER
 
 char * LaplacionFragmentShader=STRINGIFY(
-uniform sampler2D sampler0;
-uniform vec2 tc_offset[9];
+uniform sampler2D bgl_RenderedTexture;
+uniform vec2 bgl_TextureCoordinateOffset[9];
 
 void main(void)
 {
@@ -11,8 +11,8 @@ void main(void)
 
     for (int i = 0; i < 9; i++)
     {
-        sample[i] = texture2D(sampler0, 
-                              gl_TexCoord[0].st + tc_offset[i]);
+        sample[i] = texture2D(bgl_RenderedTexture, 
+                              gl_TexCoord[0].st + bgl_TextureCoordinateOffset[i]);
     }
 
     gl_FragColor = (sample[4] * 8.0) - 
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Prewitt2DFilter.h b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Prewitt2DFilter.h
index a6897bd33d4..c4b344b2ded 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Prewitt2DFilter.h
+++ b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Prewitt2DFilter.h
@@ -2,8 +2,8 @@
 #define __RAS_PREWITT2DFILTER
 
 char * PrewittFragmentShader=STRINGIFY(
-uniform sampler2D sampler0;
-uniform vec2 tc_offset[9];
+uniform sampler2D bgl_RenderedTexture;
+uniform vec2 bgl_TextureCoordinateOffset[9];
 
 void main(void)
 {
@@ -11,8 +11,8 @@ void main(void)
 
     for (int i = 0; i < 9; i++)
     {
-        sample[i] = texture2D(sampler0, 
-                              gl_TexCoord[0].st + tc_offset[i]);
+        sample[i] = texture2D(bgl_RenderedTexture, 
+                              gl_TexCoord[0].st + bgl_TextureCoordinateOffset[i]);
     }
 
     vec4 horizEdge = sample[2] + sample[5] + sample[8] -
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Sepia2DFilter.h b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Sepia2DFilter.h
index cfff00e1287..4ba91b85784 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Sepia2DFilter.h
+++ b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Sepia2DFilter.h
@@ -2,12 +2,11 @@
 #define __RAS_SEPIA2DFILTER
 
 char * SepiaFragmentShader=STRINGIFY(
-uniform sampler2D sampler0;
-uniform vec2 offset[9];
+uniform sampler2D bgl_RenderedTexture;
 
 void main(void)
 {
-	vec4 texcolor = texture2D(sampler0, gl_TexCoord[0].st); 
+	vec4 texcolor = texture2D(bgl_RenderedTexture, gl_TexCoord[0].st); 
 	float gray = dot(texcolor.rgb, vec3(0.299, 0.587, 0.114));
 	gl_FragColor = vec4(gray * vec3(1.2, 1.0, 0.8), texcolor.a);
 }
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Sharpen2DFilter.h b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Sharpen2DFilter.h
index 640983482a9..685471aab07 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Sharpen2DFilter.h
+++ b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Sharpen2DFilter.h
@@ -2,8 +2,8 @@
 #define __RAS_SHARPEN2DFILTER
 
 char * SharpenFragmentShader=STRINGIFY(
-uniform sampler2D sampler0;
-uniform vec2 tc_offset[9];
+uniform sampler2D bgl_RenderedTexture;
+uniform vec2 bgl_TextureCoordinateOffset[9];
 
 void main(void)
 {
@@ -11,8 +11,8 @@ void main(void)
 
     for (int i = 0; i < 9; i++)
     {
-        sample[i] = texture2D(sampler0, 
-                              gl_TexCoord[0].st + tc_offset[i]);
+        sample[i] = texture2D(bgl_RenderedTexture, 
+                              gl_TexCoord[0].st + bgl_TextureCoordinateOffset[i]);
     }
 
     gl_FragColor = (sample[4] * 9.0) - 
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Sobel2DFilter.h b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Sobel2DFilter.h
index da1d34713c9..93480afb250 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Sobel2DFilter.h
+++ b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Sobel2DFilter.h
@@ -2,8 +2,8 @@
 #define __RAS_SOBEL2DFILTER
 
 char * SobelFragmentShader=STRINGIFY(
-uniform sampler2D sampler0;
-uniform vec2 tc_offset[9];
+uniform sampler2D bgl_RenderedTexture;
+uniform vec2 bgl_TextureCoordinateOffset[9];
 
 void main(void)
 {
@@ -11,8 +11,8 @@ void main(void)
 
     for (int i = 0; i < 9; i++)
     {
-        sample[i] = texture2D(sampler0, 
-                              gl_TexCoord[0].st + tc_offset[i]);
+        sample[i] = texture2D(bgl_RenderedTexture, 
+                              gl_TexCoord[0].st + bgl_TextureCoordinateOffset[i]);
     }
 
     vec4 horizEdge = sample[2] + (2.0*sample[5]) + sample[8] -
-- 
cgit v1.2.3