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Added inline shaders so that the tha example can be run from any directory.

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This commit is contained in:
Robert Osfield
2006-04-14 16:44:12 +00:00
parent 6f20b47c23
commit 453243ed8c
1 changed files with 178 additions and 3 deletions
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181
examples/osgprecipitation/osgprecipitation.cpp
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@@ -44,7 +44,9 @@ struct PrecipatationParameters : public osg::Referenced
fogEnd(1000.0),
fogColour(0.5, 0.5, 0.5, 1.0),
clearColour(0.5, 0.5, 0.5, 1.0)
{}
{
rain(0.5);
}
void rain (float intensity)
{
@@ -158,7 +160,7 @@ public:
const Extensions* extensions = getExtensions(state.getContextID(),true);
glNormal3fv(_position.ptr());
extensions->glMultiTexCoord1f(GL_TEXTURE1, _startTime);
extensions->glMultiTexCoord1f(GL_TEXTURE0+1, _startTime);
_internalGeometry->draw(state);
@@ -443,9 +445,72 @@ void setUpGeometries(unsigned int numParticles)
quad_stateset->setAttribute(program);
quad_stateset->setRenderBinDetails(13,"DepthSortedBin");
#if 1
char vertexShaderSource[] =
"uniform vec3 dv_i;\n"
"uniform vec3 dv_j;\n"
"uniform vec3 dv_k;\n"
"\n"
"uniform float inversePeriod;\n"
"uniform vec4 particleColour;\n"
"uniform float particleSize;\n"
"\n"
"uniform float osg_FrameTime;\n"
"uniform float osg_DeltaFrameTime;\n"
"uniform mat4 previousModelViewMatrix;\n"
"\n"
"varying vec4 colour;\n"
"varying vec2 texCoord;\n"
"\n"
"void main(void)\n"
"{\n"
" vec3 pos = gl_Normal.xyz + (gl_Vertex.x*dv_i) + (dv_j * gl_Vertex.y);\n"
" \n"
" float offset = gl_Vertex.z;\n"
" texCoord = gl_MultiTexCoord0.xy;\n"
" float startTime = gl_MultiTexCoord1.x;\n"
"\n"
" vec3 v_previous = pos + dv_k * fract( (osg_FrameTime - startTime)*inversePeriod - offset);\n"
" vec3 v_current = v_previous + dv_k * (osg_DeltaFrameTime*inversePeriod);\n"
" \n"
" colour = particleColour;\n"
" \n"
" vec4 v1 = gl_ModelViewMatrix * vec4(v_current,1.0);\n"
" vec4 v2 = previousModelViewMatrix * vec4(v_previous,1.0);\n"
" \n"
" vec3 dv = v2.xyz - v1.xyz;\n"
" \n"
" vec2 dv_normalized = normalize(dv.xy);\n"
" dv.xy += dv_normalized * particleSize;\n"
" vec2 dp = vec2( -dv_normalized.y, dv_normalized.x ) * particleSize;\n"
" \n"
" float area = length(dv.xy);\n"
" colour.a = 0.05+(particleSize)/area;\n"
" \n"
"\n"
" v1.xyz += dv*texCoord.y;\n"
" v1.xy += dp*texCoord.x;\n"
" \n"
" gl_Position = gl_ProjectionMatrix * v1;\n"
"}\n";
char fragmentShaderSource[] =
"uniform sampler2D baseTexture;\n"
"varying vec2 texCoord;\n"
"varying vec4 colour;\n"
"\n"
"void main (void)\n"
"{\n"
" gl_FragColor = colour * texture2D( baseTexture, texCoord);\n"
"}\n";
program->addShader(new osg::Shader(osg::Shader::VERTEX, vertexShaderSource));
program->addShader(new osg::Shader(osg::Shader::FRAGMENT, fragmentShaderSource));
#else
// get shaders from source
program->addShader(osg::Shader::readShaderFile(osg::Shader::VERTEX, osgDB::findDataFile("quad_rain.vert")));
program->addShader(osg::Shader::readShaderFile(osg::Shader::FRAGMENT, osgDB::findDataFile("rain.frag")));
#endif
}
@@ -459,9 +524,70 @@ void setUpGeometries(unsigned int numParticles)
line_stateset->setAttribute(program);
line_stateset->setRenderBinDetails(12,"DepthSortedBin");
#if 1
char vertexShaderSource[] =
"uniform vec3 dv_i;\n"
"uniform vec3 dv_j;\n"
"uniform vec3 dv_k;\n"
"\n"
"uniform float inversePeriod;\n"
"uniform vec4 particleColour;\n"
"uniform float particleSize;\n"
"\n"
"uniform float osg_FrameTime;\n"
"uniform float osg_DeltaFrameTime;\n"
"uniform mat4 previousModelViewMatrix;\n"
"\n"
"varying vec4 colour;\n"
"varying vec2 texCoord;\n"
"\n"
"void main(void)\n"
"{\n"
" vec3 pos = gl_Normal.xyz + (gl_Vertex.x*dv_i) + (dv_j * gl_Vertex.y);\n"
" \n"
"\n"
" float offset = gl_Vertex.z;\n"
" texCoord = gl_MultiTexCoord0.xy;\n"
" float startTime = gl_MultiTexCoord1.x;\n"
"\n"
" vec3 v_previous = pos + dv_k * fract( (osg_FrameTime - startTime)*inversePeriod - offset);\n"
" vec3 v_current = v_previous + dv_k * (osg_DeltaFrameTime*inversePeriod);\n"
" \n"
" colour = particleColour;\n"
" \n"
" vec4 v1 = gl_ModelViewMatrix * vec4(v_current,1.0);\n"
" vec4 v2 = previousModelViewMatrix * vec4(v_previous,1.0);\n"
" \n"
" vec3 dv = v2.xyz - v1.xyz;\n"
" \n"
" vec2 dv_normalized = normalize(dv.xy);\n"
" dv.xy += dv_normalized * particleSize;\n"
" \n"
" float area = length(dv.xy);\n"
" colour.a = 0.1+(particleSize)/area;\n"
" \n"
" v1.xyz += dv*texCoord.y;\n"
" \n"
" gl_Position = gl_ProjectionMatrix * v1;\n"
"}";
char fragmentShaderSource[] =
"uniform sampler2D baseTexture;\n"
"varying vec2 texCoord;\n"
"varying vec4 colour;\n"
"\n"
"void main (void)\n"
"{\n"
" gl_FragColor = colour * texture2D( baseTexture, texCoord);\n"
"}\n";
program->addShader(new osg::Shader(osg::Shader::VERTEX, vertexShaderSource));
program->addShader(new osg::Shader(osg::Shader::FRAGMENT, fragmentShaderSource));
#else
// get shaders from source
program->addShader(osg::Shader::readShaderFile(osg::Shader::VERTEX, osgDB::findDataFile("line_rain.vert")));
program->addShader(osg::Shader::readShaderFile(osg::Shader::FRAGMENT, osgDB::findDataFile("rain.frag")));
#endif
}
@@ -474,9 +600,59 @@ void setUpGeometries(unsigned int numParticles)
osg::Program* program = new osg::Program;
point_stateset->setAttribute(program);
#if 1
char vertexShaderSource[] =
"uniform vec3 dv_i;\n"
"uniform vec3 dv_j;\n"
"uniform vec3 dv_k;\n"
"\n"
"uniform float inversePeriod;\n"
"uniform vec4 particleColour;\n"
"uniform float particleSize;\n"
"\n"
"uniform float osg_FrameTime;\n"
"\n"
"varying vec4 colour;\n"
"varying vec2 texCoord;\n"
"\n"
"void main(void)\n"
"{\n"
" vec3 pos = gl_Normal.xyz + (gl_Vertex.x*dv_i) + (dv_j * gl_Vertex.y);\n"
" texCoord = gl_MultiTexCoord0.xy;\n"
"\n"
" float startTime = gl_MultiTexCoord1.x;\n"
"\n"
" vec3 v_current = pos + dv_k * fract( (osg_FrameTime - startTime)*inversePeriod - gl_Vertex.z);\n"
" \n"
" colour = particleColour;\n"
"\n"
" gl_Position = gl_ModelViewProjectionMatrix * vec4(v_current,1.0);\n"
"\n"
" //float pointSize = min(abs(1280*particleSize / gl_Position.w), 20.0);\n"
" float pointSize = abs(1280*particleSize / gl_Position.w);\n"
" //gl_PointSize = max(ceil(pointSize),2);\n"
" gl_PointSize = ceil(pointSize);\n"
" \n"
" colour.a = 0.05+(pointSize*pointSize)/(gl_PointSize*gl_PointSize);\n"
"}\n";
char fragmentShaderSource[] =
"uniform sampler2D baseTexture;\n"
"varying vec2 texCoord;\n"
"varying vec4 colour;\n"
"\n"
"void main (void)\n"
"{\n"
" gl_FragColor = colour * texture2D( baseTexture, texCoord);\n"
"}\n";
program->addShader(new osg::Shader(osg::Shader::VERTEX, vertexShaderSource));
program->addShader(new osg::Shader(osg::Shader::FRAGMENT, fragmentShaderSource));
#else
// get shaders from source
program->addShader(osg::Shader::readShaderFile(osg::Shader::VERTEX, osgDB::findDataFile("point_rain.vert")));
program->addShader(osg::Shader::readShaderFile(osg::Shader::FRAGMENT, osgDB::findDataFile("rain.frag")));
#endif
/// Setup the point sprites
osg::PointSprite *sprite = new osg::PointSprite();
@@ -484,7 +660,6 @@ void setUpGeometries(unsigned int numParticles)
point_stateset->setMode(GL_VERTEX_PROGRAM_POINT_SIZE, osg::StateAttribute::ON);
point_stateset->setRenderBinDetails(11,"DepthSortedBin");
}
createGeometry(numParticles, quad_geometry.get(), line_geometry.get(), point_geometry.get());