C++ CShaderProgramPtr类代码示例

bool CShaderManager::NewProgram(const char* name, const std::map<CStr, CStr>& baseDefines, CShaderProgramPtr& program)
{
	if (strncmp(name, "fixed:", 6) == 0)
	{
		program = CShaderProgramPtr(CShaderProgram::ConstructFFP(name+6));
		if (!program)
			return false;
		program->Reload();
		return true;
	}

	VfsPath xmlFilename = L"shaders/" + wstring_from_utf8(name) + L".xml";

	CXeromyces XeroFile;
	PSRETURN ret = XeroFile.Load(g_VFS, xmlFilename);
	if (ret != PSRETURN_OK)
		return false;

#if USE_SHADER_XML_VALIDATION
	{
		TIMER_ACCRUE(tc_ShaderValidation);

		// Serialize the XMB data and pass it to the validator
		XML_Start();
		XML_SetPrettyPrint(false);
		XML_WriteXMB(XeroFile);
		bool ok = m_Validator.ValidateEncoded(wstring_from_utf8(name), XML_GetOutput());
		if (!ok)
			return false;
	}
#endif

	// Define all the elements and attributes used in the XML file
#define EL(x) int el_##x = XeroFile.GetElementID(#x)
#define AT(x) int at_##x = XeroFile.GetAttributeID(#x)
	EL(vertex);
	EL(fragment);
	EL(define);
	EL(uniform);
	EL(attrib);
	EL(stream);
	AT(type);
	AT(file);
	AT(name);
	AT(value);
	AT(loc);
#undef AT
#undef EL

	XMBElement Root = XeroFile.GetRoot();

	bool isGLSL = (Root.GetAttributes().GetNamedItem(at_type) == "glsl");
	VfsPath vertexFile;
	VfsPath fragmentFile;
	std::map<CStr, CStr> defines = baseDefines;
	std::map<CStr, int> vertexUniforms;
	std::map<CStr, int> fragmentUniforms;
	int streamFlags = 0;

	XERO_ITER_EL(Root, Child)
	{
		if (Child.GetNodeName() == el_define)
		{
			defines[Child.GetAttributes().GetNamedItem(at_name)] = Child.GetAttributes().GetNamedItem(at_value);
		}
		else if (Child.GetNodeName() == el_vertex)
		{
			vertexFile = L"shaders/" + Child.GetAttributes().GetNamedItem(at_file).FromUTF8();

			XERO_ITER_EL(Child, Param)
			{
				if (Param.GetNodeName() == el_uniform)
				{
					vertexUniforms[Param.GetAttributes().GetNamedItem(at_name)] = Param.GetAttributes().GetNamedItem(at_loc).ToInt();
				}
				else if (Param.GetNodeName() == el_stream)
				{
					CStr StreamName = Param.GetAttributes().GetNamedItem(at_name);
					if (StreamName == "pos")
						streamFlags |= STREAM_POS;
					else if (StreamName == "normal")
						streamFlags |= STREAM_NORMAL;
					else if (StreamName == "color")
						streamFlags |= STREAM_COLOR;
					else if (StreamName == "uv0")
						streamFlags |= STREAM_UV0;
					else if (StreamName == "uv1")
						streamFlags |= STREAM_UV1;
					else if (StreamName == "uv2")
						streamFlags |= STREAM_UV2;
					else if (StreamName == "uv3")
						streamFlags |= STREAM_UV3;
				}
				else if (Param.GetNodeName() == el_attrib)
				{
					// TODO: add support for vertex attributes
				}
			}
		}
		else if (Child.GetNodeName() == el_fragment)

void CParticleEmitter::Bind(const CShaderProgramPtr& shader)
{
	shader->BindTexture("baseTex", m_Type->m_Texture);
	pglBlendEquationEXT(m_Type->m_BlendEquation);
	glBlendFunc(m_Type->m_BlendFuncSrc, m_Type->m_BlendFuncDst);
}

void CChart::Draw()
{
	PROFILE3("render chart");

	if (!GetGUI())
		return;

	if (m_Series.empty())
		return;

	const float bz = GetBufferedZ();
	CRect rect = GetChartRect();
	const float width = rect.GetWidth();
	const float height = rect.GetHeight();

	// Disable depth updates to prevent apparent z-fighting-related issues
	//  with some drivers causing units to get drawn behind the texture.
	glDepthMask(0);

	// Setup the render state
	CMatrix3D transform = GetDefaultGuiMatrix();
	CShaderDefines lineDefines;
	CShaderTechniquePtr tech = g_Renderer.GetShaderManager().LoadEffect(str_gui_solid, g_Renderer.GetSystemShaderDefines(), lineDefines);
	tech->BeginPass();
	CShaderProgramPtr shader = tech->GetShader();
	shader->Uniform(str_transform, transform);

	CVector2D leftBottom, rightTop;
	leftBottom = rightTop = m_Series[0].m_Points[0];
	for (const CChartData& data : m_Series)
		for (const CVector2D& point : data.m_Points)
		{
			if (point.X < leftBottom.X)
				leftBottom.X = point.X;
			if (point.Y < leftBottom.Y)
				leftBottom.Y = point.Y;

			if (point.X > rightTop.X)
				rightTop.X = point.X;
			if (point.Y > rightTop.Y)
				rightTop.Y = point.Y;
		}

	CVector2D scale(width / (rightTop.X - leftBottom.X), height / (rightTop.Y - leftBottom.Y));

	for (const CChartData& data : m_Series)
	{
		if (data.m_Points.empty())
			continue;

		std::vector<float> vertices;
		vertices.reserve(data.m_Points.size() * 3);
		for (const CVector2D& point : data.m_Points)
		{
			vertices.push_back(rect.left + (point.X - leftBottom.X) * scale.X);
			vertices.push_back(rect.bottom - (point.Y - leftBottom.Y) * scale.Y);
			vertices.push_back(bz + 0.5f);
		}
		shader->Uniform(str_color, data.m_Color);
		shader->VertexPointer(3, GL_FLOAT, 0, &vertices[0]);
		shader->AssertPointersBound();

		glEnable(GL_LINE_SMOOTH);
		glLineWidth(1.1f);
		if (!g_Renderer.m_SkipSubmit)
			glDrawArrays(GL_LINE_STRIP, 0, vertices.size() / 3);
		glLineWidth(1.0f);
		glDisable(GL_LINE_SMOOTH);
	}

	tech->EndPass();

	// Reset depth mask
	glDepthMask(1);
}

void ShadowMap::RenderDebugBounds()
{
	CShaderTechniquePtr shaderTech = g_Renderer.GetShaderManager().LoadEffect("gui_solid");
	shaderTech->BeginPass();
	CShaderProgramPtr shader = shaderTech->GetShader();

	glDepthMask(0);
	glDisable(GL_CULL_FACE);

	// Render shadow bound
	shader->Uniform("transform", g_Renderer.GetViewCamera().GetViewProjection() * m->InvLightTransform);

	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	shader->Uniform("color", 0.0f, 0.0f, 1.0f, 0.25f);
	m->ShadowBound.Render(shader);
	glDisable(GL_BLEND);

	shader->Uniform("color", 0.0f, 0.0f, 1.0f, 1.0f);
	m->ShadowBound.RenderOutline(shader);

	// Draw a funny line/triangle direction indicator thing for unknown reasons
	float shadowLineVerts[] = {
		0.0, 0.0, 0.0,
		0.0, 0.0, 50.0,

		0.0, 0.0, 50.0,
		50.0, 0.0, 50.0,

		50.0, 0.0, 50.0,
		0.0, 50.0, 50.0,
		
		0.0, 50.0, 50.0,
		0.0, 0.0, 50.0
	};
	shader->VertexPointer(3, GL_FLOAT, 0, shadowLineVerts);
	shader->AssertPointersBound();
	glDrawArrays(GL_LINES, 0, 8);

	shaderTech->EndPass();

#if 0
	CMatrix3D InvTexTransform;

	m->TextureMatrix.GetInverse(InvTexTransform);

	// Render representative texture rectangle
	glPushMatrix();
	glMultMatrixf(&InvTexTransform._11);

	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glColor4ub(255,0,0,64);
	glBegin(GL_QUADS);
		glVertex3f(0.0, 0.0, 0.0);
		glVertex3f(1.0, 0.0, 0.0);
		glVertex3f(1.0, 1.0, 0.0);
		glVertex3f(0.0, 1.0, 0.0);
	glEnd();
	glDisable(GL_BLEND);

	glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
	glColor3ub(255,0,0);
	glBegin(GL_QUADS);
		glVertex3f(0.0, 0.0, 0.0);
		glVertex3f(1.0, 0.0, 0.0);
		glVertex3f(1.0, 1.0, 0.0);
		glVertex3f(0.0, 1.0, 0.0);
	glEnd();
	glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
	glPopMatrix();
#endif

	glEnable(GL_CULL_FACE);
	glDepthMask(1);
}

///////////////////////////////////////////////////////////////////
// Full-featured terrain rendering with blending and everything
void TerrainRenderer::RenderTerrain(bool filtered)
{
#if CONFIG2_GLES
	UNUSED2(filtered);
#else
	ENSURE(m->phase == Phase_Render);

	std::vector<CPatchRData*>& visiblePatches = filtered ? m->filteredPatches : m->visiblePatches;
	std::vector<CDecalRData*>& visibleDecals = filtered ? m->filteredDecals : m->visibleDecals;
	if (visiblePatches.empty() && visibleDecals.empty())
		return;

	CShaderProgramPtr dummyShader = g_Renderer.GetShaderManager().LoadProgram("fixed:dummy");
	dummyShader->Bind();

	// render the solid black sides of the map first
	g_Renderer.BindTexture(0, 0);
	glEnableClientState(GL_VERTEX_ARRAY);
	glColor3f(0, 0, 0);
	PROFILE_START("render terrain sides");
	for (size_t i = 0; i < visiblePatches.size(); ++i)
		visiblePatches[i]->RenderSides(dummyShader);
	PROFILE_END("render terrain sides");

	// switch on required client states
	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
	
	// render everything fullbright
	// set up texture environment for base pass
	pglActiveTextureARB(GL_TEXTURE0);
	pglClientActiveTextureARB(GL_TEXTURE0);
	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
	glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_REPLACE);
	glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);
	glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);

	// Set alpha to 1.0
	glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
	glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_CONSTANT);
	glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
	static const float one[4] = { 1.f, 1.f, 1.f, 1.f };
	glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, one);
	
	PROFILE_START("render terrain base");
	CPatchRData::RenderBases(visiblePatches, dummyShader, true);
	PROFILE_END("render terrain base");

	// render blends
	// switch on the composite alpha map texture
	(void)ogl_tex_bind(g_Renderer.m_hCompositeAlphaMap, 1);

	// switch on second uv set
	pglClientActiveTextureARB(GL_TEXTURE1);
	glEnableClientState(GL_TEXTURE_COORD_ARRAY);

	// setup additional texenv required by blend pass
	pglActiveTextureARB(GL_TEXTURE1);
	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
	glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_REPLACE);
	glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS);
	glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
	glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
	glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);
	glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_ONE_MINUS_SRC_ALPHA);

	// switch on blending
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);

	// no need to write to the depth buffer a second time
	glDepthMask(0);
	
	// The decal color array contains lighting data, which we don't want in this non-shader mode
	glDisableClientState(GL_COLOR_ARRAY);

	// render blend passes for each patch
	PROFILE_START("render terrain blends");
	CPatchRData::RenderBlends(visiblePatches, dummyShader, true);
	PROFILE_END("render terrain blends");

	// Disable second texcoord array
	pglClientActiveTextureARB(GL_TEXTURE1);
	glDisableClientState(GL_TEXTURE_COORD_ARRAY);


	// Render terrain decals

	g_Renderer.BindTexture(1, 0);
	pglActiveTextureARB(GL_TEXTURE0);
	pglClientActiveTextureARB(GL_TEXTURE0);
	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
	glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
	glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS);
	glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
	glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_TEXTURE);
	glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);
	glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
	glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);
//.........这里部分代码省略.........

void GUIRenderer::Draw(DrawCalls& Calls, float Z)
{
	// Called every frame, to draw the object (based on cached calculations)

	// TODO: batching by shader/texture/etc would be nice

	CMatrix3D matrix = GetDefaultGuiMatrix();

	glDisable(GL_BLEND);

	// Set LOD bias so mipmapped textures are prettier
#if CONFIG2_GLES
#warning TODO: implement GUI LOD bias for GLES
#else
	glTexEnvf(GL_TEXTURE_FILTER_CONTROL, GL_TEXTURE_LOD_BIAS, -1.f);
#endif

	// Iterate through each DrawCall, and execute whatever drawing code is being called
	for (DrawCalls::const_iterator cit = Calls.begin(); cit != Calls.end(); ++cit)
	{
		cit->m_Shader->BeginPass();
		CShaderProgramPtr shader = cit->m_Shader->GetShader();
		shader->Uniform(str_transform, matrix);

		if (cit->m_HasTexture)
		{
			shader->Uniform(str_color, cit->m_ShaderColorParameter);
			shader->BindTexture(str_tex, cit->m_Texture);

			if (cit->m_EnableBlending || cit->m_Texture->HasAlpha()) // (shouldn't call HasAlpha before BindTexture)
			{
				glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
				glEnable(GL_BLEND);
			}

			CRect TexCoords = cit->ComputeTexCoords();

			// Ensure the quad has the correct winding order, and update texcoords to match
			CRect Verts = cit->m_Vertices;
			if (Verts.right < Verts.left)
			{
				std::swap(Verts.right, Verts.left);
				std::swap(TexCoords.right, TexCoords.left);
			}
			if (Verts.bottom < Verts.top)
			{
				std::swap(Verts.bottom, Verts.top);
				std::swap(TexCoords.bottom, TexCoords.top);
			}

			std::vector<float> data;
#define ADD(u, v, x, y, z) STMT(data.push_back(u); data.push_back(v); data.push_back(x); data.push_back(y); data.push_back(z))
			ADD(TexCoords.left, TexCoords.bottom, Verts.left, Verts.bottom, Z + cit->m_DeltaZ);
			ADD(TexCoords.right, TexCoords.bottom, Verts.right, Verts.bottom, Z + cit->m_DeltaZ);
			ADD(TexCoords.right, TexCoords.top, Verts.right, Verts.top, Z + cit->m_DeltaZ);

			ADD(TexCoords.right, TexCoords.top, Verts.right, Verts.top, Z + cit->m_DeltaZ);
			ADD(TexCoords.left, TexCoords.top, Verts.left, Verts.top, Z + cit->m_DeltaZ);
			ADD(TexCoords.left, TexCoords.bottom, Verts.left, Verts.bottom, Z + cit->m_DeltaZ);
#undef ADD

			shader->TexCoordPointer(GL_TEXTURE0, 2, GL_FLOAT, 5*sizeof(float), &data[0]);
			shader->VertexPointer(3, GL_FLOAT, 5*sizeof(float), &data[2]);
			glDrawArrays(GL_TRIANGLES, 0, 6);
		}
		else
		{
			shader->Uniform(str_color, cit->m_BackColor);

			if (cit->m_EnableBlending)
			{
				glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
				glEnable(GL_BLEND);
			}

			// Ensure the quad has the correct winding order
			CRect Verts = cit->m_Vertices;
			if (Verts.right < Verts.left)
				std::swap(Verts.right, Verts.left);
			if (Verts.bottom < Verts.top)
				std::swap(Verts.bottom, Verts.top);

			std::vector<float> data;
#define ADD(x, y, z) STMT(data.push_back(x); data.push_back(y); data.push_back(z))
			ADD(Verts.left, Verts.bottom, Z + cit->m_DeltaZ);
			ADD(Verts.right, Verts.bottom, Z + cit->m_DeltaZ);
			ADD(Verts.right, Verts.top, Z + cit->m_DeltaZ);

			ADD(Verts.right, Verts.top, Z + cit->m_DeltaZ);
			ADD(Verts.left, Verts.top, Z + cit->m_DeltaZ);
			ADD(Verts.left, Verts.bottom, Z + cit->m_DeltaZ);

			shader->VertexPointer(3, GL_FLOAT, 3*sizeof(float), &data[0]);
			glDrawArrays(GL_TRIANGLES, 0, 6);

			if (cit->m_BorderColor != CColor())
			{
				shader->Uniform(str_color, cit->m_BorderColor);

				data.clear();
//.........这里部分代码省略.........

// Render
void CProfileViewer::RenderProfile()
{
	if (!m->profileVisible)
		return;

	if (!m->path.size())
	{
		m->profileVisible = false;
		return;
	}

	PROFILE3_GPU("profile viewer");

	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

	AbstractProfileTable* table = m->path[m->path.size() - 1];
	const std::vector<ProfileColumn>& columns = table->GetColumns();
	size_t numrows = table->GetNumberRows();

	CStrIntern font_name("mono-stroke-10");
	CFontMetrics font(font_name);
	int lineSpacing = font.GetLineSpacing();

	// Render background
	GLint estimate_height;
	GLint estimate_width;

	estimate_width = 50;
	for(size_t i = 0; i < columns.size(); ++i)
		estimate_width += (GLint)columns[i].width;

	estimate_height = 3 + (GLint)numrows;
	if (m->path.size() > 1)
		estimate_height += 2;
	estimate_height = lineSpacing*estimate_height;

	CShaderTechniquePtr solidTech = g_Renderer.GetShaderManager().LoadEffect(str_gui_solid);
	solidTech->BeginPass();
	CShaderProgramPtr solidShader = solidTech->GetShader();

	solidShader->Uniform(str_color, 0.0f, 0.0f, 0.0f, 0.5f);

	CMatrix3D transform = GetDefaultGuiMatrix();
	solidShader->Uniform(str_transform, transform);

	float backgroundVerts[] = {
		(float)estimate_width, 0.0f,
		0.0f, 0.0f,
		0.0f, (float)estimate_height,
		0.0f, (float)estimate_height,
		(float)estimate_width, (float)estimate_height,
		(float)estimate_width, 0.0f
	};
	solidShader->VertexPointer(2, GL_FLOAT, 0, backgroundVerts);
	solidShader->AssertPointersBound();
	glDrawArrays(GL_TRIANGLES, 0, 6);

	transform.PostTranslate(22.0f, lineSpacing*3.0f, 0.0f);
	solidShader->Uniform(str_transform, transform);

	// Draw row backgrounds
	for (size_t row = 0; row < numrows; ++row)
	{
		if (row % 2)
			solidShader->Uniform(str_color, 1.0f, 1.0f, 1.0f, 0.1f);
		else
			solidShader->Uniform(str_color, 0.0f, 0.0f, 0.0f, 0.1f);

		float rowVerts[] = {
			-22.f, 2.f,
			estimate_width-22.f, 2.f,
			estimate_width-22.f, 2.f-lineSpacing,

			estimate_width-22.f, 2.f-lineSpacing,
			-22.f, 2.f-lineSpacing,
			-22.f, 2.f
		};
		solidShader->VertexPointer(2, GL_FLOAT, 0, rowVerts);
		solidShader->AssertPointersBound();
		glDrawArrays(GL_TRIANGLES, 0, 6);

		transform.PostTranslate(0.0f, lineSpacing, 0.0f);
		solidShader->Uniform(str_transform, transform);
	}

	solidTech->EndPass();

	// Print table and column titles

	CShaderTechniquePtr textTech = g_Renderer.GetShaderManager().LoadEffect(str_gui_text);
	textTech->BeginPass();

	CTextRenderer textRenderer(textTech->GetShader());
	textRenderer.Font(font_name);
	textRenderer.Color(1.0f, 1.0f, 1.0f);

	textRenderer.PrintfAt(2.0f, lineSpacing, L"%hs", table->GetTitle().c_str());

//.........这里部分代码省略.........

void CPostprocManager::ApplyBlurGauss(GLuint inOutTex, GLuint tempTex, int inWidth, int inHeight)
{
	// Set tempTex as our rendering target.
	pglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_BloomFbo);
	pglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, tempTex, 0);
	
	// Get bloom shader, for a horizontal Gaussian blur pass.
	CShaderDefines defines2;
	defines2.Add(str_BLOOM_PASS_H, str_1);
	CShaderTechniquePtr tech = g_Renderer.GetShaderManager().LoadEffect(str_bloom,
			g_Renderer.GetSystemShaderDefines(), defines2);
	
	tech->BeginPass();
	CShaderProgramPtr shader = tech->GetShader();
	shader->BindTexture(str_renderedTex, inOutTex);
	shader->Uniform(str_texSize, inWidth, inHeight, 0.0f, 0.0f);
	
	glPushAttrib(GL_VIEWPORT_BIT); 
	glViewport(0, 0, inWidth, inHeight);
	
	glBegin(GL_QUADS);
	    glColor4f(1.f, 1.f, 1.f, 1.f);
	    glTexCoord2f(1.0, 1.0);	glVertex2f(1,1);
	    glTexCoord2f(0.0, 1.0);	glVertex2f(-1,1);
	    glTexCoord2f(0.0, 0.0);	glVertex2f(-1,-1);
	    glTexCoord2f(1.0, 0.0);	glVertex2f(1,-1);
	glEnd();
	
	glPopAttrib(); 
	tech->EndPass();
	
	// Set result texture as our render target.
	pglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_BloomFbo);
	pglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, inOutTex, 0);
	
	// Get bloom shader, for a vertical Gaussian blur pass.
	CShaderDefines defines3;
	defines3.Add(str_BLOOM_PASS_V, str_1);
	tech = g_Renderer.GetShaderManager().LoadEffect(str_bloom,
			g_Renderer.GetSystemShaderDefines(), defines3);
	
	tech->BeginPass();
	shader = tech->GetShader();
	
	// Our input texture to the shader is the output of the horizontal pass.
	shader->BindTexture(str_renderedTex, tempTex);
	shader->Uniform(str_texSize, inWidth, inHeight, 0.0f, 0.0f);
	
	glPushAttrib(GL_VIEWPORT_BIT); 
	glViewport(0, 0, inWidth, inHeight);
	
	glBegin(GL_QUADS);
	    glColor4f(1.f, 1.f, 1.f, 1.f);
	    glTexCoord2f(1.0, 1.0);	glVertex2f(1,1);
	    glTexCoord2f(0.0, 1.0);	glVertex2f(-1,1);
	    glTexCoord2f(0.0, 0.0);	glVertex2f(-1,-1);
	    glTexCoord2f(1.0, 0.0);	glVertex2f(1,-1);
	glEnd();
	
	glPopAttrib(); 
	tech->EndPass();
}

/**
 * Set up all the uniforms for a shader pass.
 */
void TerrainRenderer::PrepareShader(const CShaderProgramPtr& shader, ShadowMap* shadow)
{
	shader->Uniform(str_transform, g_Renderer.GetViewCamera().GetViewProjection());
	shader->Uniform(str_cameraPos, g_Renderer.GetViewCamera().GetOrientation().GetTranslation());

	const CLightEnv& lightEnv = g_Renderer.GetLightEnv();

	if (shadow)
	{
		shader->BindTexture(str_shadowTex, shadow->GetTexture());
		shader->Uniform(str_shadowTransform, shadow->GetTextureMatrix());
		int width = shadow->GetWidth();
		int height = shadow->GetHeight();
		shader->Uniform(str_shadowScale, width, height, 1.0f / width, 1.0f / height);
	}

	CLOSTexture& los = g_Renderer.GetScene().GetLOSTexture();
	shader->BindTexture(str_losTex, los.GetTextureSmooth());
	shader->Uniform(str_losTransform, los.GetTextureMatrix()[0], los.GetTextureMatrix()[12], 0.f, 0.f);

	shader->Uniform(str_ambient, lightEnv.m_TerrainAmbientColor);
	shader->Uniform(str_sunColor, lightEnv.m_SunColor);
	shader->Uniform(str_sunDir, lightEnv.GetSunDir());
	
	shader->Uniform(str_fogColor, lightEnv.m_FogColor);
	shader->Uniform(str_fogParams, lightEnv.m_FogFactor, lightEnv.m_FogMax, 0.f, 0.f);
}

void TerrainRenderer::RenderSimpleWater()
{
#if !CONFIG2_GLES
	PROFILE3_GPU("simple water");

	WaterManager* WaterMgr = g_Renderer.GetWaterManager();
	CLOSTexture& losTexture = g_Game->GetView()->GetLOSTexture();

	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
	glEnable(GL_DEPTH_TEST);
	glDepthFunc(GL_LEQUAL);

	double time = WaterMgr->m_WaterTexTimer;
	double period = 1.6f;
	int curTex = (int)(time*60/period) % 60;

	WaterMgr->m_WaterTexture[curTex]->Bind();

	// Shift the texture coordinates by these amounts to make the water "flow"
	float tx = -fmod(time, 81.0)/81.0;
	float ty = -fmod(time, 34.0)/34.0;
	float repeatPeriod = 16.0f;

	// Perform the shifting by using texture coordinate generation
	GLfloat texgenS0[4] = { 1/repeatPeriod, 0, 0, tx };
	GLfloat texgenT0[4] = { 0, 0, 1/repeatPeriod, ty };
	glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
	glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
	glTexGenfv(GL_S, GL_OBJECT_PLANE, texgenS0);
	glTexGenfv(GL_T, GL_OBJECT_PLANE, texgenT0);
	glEnable(GL_TEXTURE_GEN_S);
	glEnable(GL_TEXTURE_GEN_T);

	// Set up texture environment to multiply vertex RGB by texture RGB and use vertex alpha
	GLfloat waterColor[4] = { WaterMgr->m_WaterColor.r, WaterMgr->m_WaterColor.g, WaterMgr->m_WaterColor.b, 1.0f };
	glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, waterColor);
	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
	glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
	glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);
	glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
	glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_CONSTANT);
	glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);
	glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
	glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PRIMARY_COLOR_ARB);
	glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);

	// Multiply by LOS texture
	losTexture.BindTexture(1);
	CMatrix3D losMatrix = losTexture.GetTextureMatrix();
	GLfloat texgenS1[4] = { losMatrix[0], losMatrix[4], losMatrix[8], losMatrix[12] };
	GLfloat texgenT1[4] = { losMatrix[1], losMatrix[5], losMatrix[9], losMatrix[13] };
	glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
	glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
	glTexGenfv(GL_S, GL_OBJECT_PLANE, texgenS1);
	glTexGenfv(GL_T, GL_OBJECT_PLANE, texgenT1);
	glEnable(GL_TEXTURE_GEN_S);
	glEnable(GL_TEXTURE_GEN_T);

	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
	glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
	glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS);
	glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
	glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_TEXTURE);
	glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_ALPHA);
	glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
	glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PREVIOUS);
	glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);

	CShaderProgramPtr dummyShader = g_Renderer.GetShaderManager().LoadProgram("fixed:dummy", CShaderDefines());
	dummyShader->Bind();

	glEnableClientState(GL_VERTEX_ARRAY);
	glEnableClientState(GL_COLOR_ARRAY);

	for (size_t i = 0; i < m->visiblePatches.size(); ++i)
	{
		CPatchRData* data = m->visiblePatches[i];
		data->RenderWater(dummyShader);
	}

	glDisableClientState(GL_COLOR_ARRAY);
	glDisableClientState(GL_VERTEX_ARRAY);

	dummyShader->Unbind();

	g_Renderer.BindTexture(1, 0);

	glDisable(GL_TEXTURE_GEN_S);
	glDisable(GL_TEXTURE_GEN_T);
	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);

	pglActiveTextureARB(GL_TEXTURE0_ARB);

	// Clean up the texture matrix and blend mode
	glDisable(GL_TEXTURE_GEN_S);
	glDisable(GL_TEXTURE_GEN_T);
	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);

	glDisable(GL_BLEND);
//.........这里部分代码省略.........

void TerrainRenderer::RenderTerrainOverlayTexture(CMatrix3D& textureMatrix)
{
#if CONFIG2_GLES
#warning TODO: implement TerrainRenderer::RenderTerrainOverlayTexture for GLES
	UNUSED2(textureMatrix);
#else
	ENSURE(m->phase == Phase_Render);

	std::vector<CPatchRData*>& visiblePatches = m->visiblePatches;

	glEnableClientState(GL_VERTEX_ARRAY);
	glEnableClientState(GL_TEXTURE_COORD_ARRAY);

	glEnable(GL_TEXTURE_2D);
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glDepthMask(0);

	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);

	glMatrixMode(GL_TEXTURE);
	glLoadMatrixf(&textureMatrix._11);
	glMatrixMode(GL_MODELVIEW);

	CShaderProgramPtr dummyShader = g_Renderer.GetShaderManager().LoadProgram("fixed:dummy", CShaderDefines());
	dummyShader->Bind();
	CPatchRData::RenderStreams(visiblePatches, dummyShader, STREAM_POS|STREAM_POSTOUV0);
	dummyShader->Unbind();

	// To make the overlay visible over water, render an additional map-sized
	// water-height patch
	CBoundingBoxAligned waterBounds;
	for (size_t i = 0; i < m->visiblePatches.size(); ++i)
	{
		CPatchRData* data = m->visiblePatches[i];
		waterBounds += data->GetWaterBounds();
	}
	if (!waterBounds.IsEmpty())
	{
		float h = g_Renderer.GetWaterManager()->m_WaterHeight + 0.05f; // add a delta to avoid z-fighting
		float waterPos[] = {
			waterBounds[0].X, h, waterBounds[0].Z,
			waterBounds[1].X, h, waterBounds[0].Z,
			waterBounds[0].X, h, waterBounds[1].Z,
			waterBounds[1].X, h, waterBounds[1].Z
		};
		glVertexPointer(3, GL_FLOAT, 3*sizeof(float), waterPos);
		glTexCoordPointer(3, GL_FLOAT, 3*sizeof(float), waterPos);
		glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
	}

	glMatrixMode(GL_TEXTURE);
	glLoadIdentity();
	glMatrixMode(GL_MODELVIEW);

	glDepthMask(1);
	glDisable(GL_BLEND);
	glDisableClientState(GL_COLOR_ARRAY);
	glDisableClientState(GL_VERTEX_ARRAY);
	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
#endif
}

void TerrainRenderer::RenderTerrainShader(const CShaderDefines& context, ShadowMap* shadow, bool filtered)
{
    ENSURE(m->phase == Phase_Render);

    std::vector<CPatchRData*>& visiblePatches = filtered ? m->filteredPatches : m->visiblePatches;
    std::vector<CDecalRData*>& visibleDecals = filtered ? m->filteredDecals : m->visibleDecals;
    if (visiblePatches.empty() && visibleDecals.empty())
        return;

    CShaderManager& shaderManager = g_Renderer.GetShaderManager();

    CShaderTechniquePtr techBase(shaderManager.LoadEffect(CStrIntern("terrain_base"), context, CShaderDefines()));
    CShaderTechniquePtr techBlend(shaderManager.LoadEffect(CStrIntern("terrain_blend"), context, CShaderDefines()));
    CShaderTechniquePtr techDecal(shaderManager.LoadEffect(CStrIntern("terrain_decal"), context, CShaderDefines()));

    // render the solid black sides of the map first
    CShaderTechniquePtr techSolid = g_Renderer.GetShaderManager().LoadEffect("gui_solid");
    techSolid->BeginPass();
    CShaderProgramPtr shaderSolid = techSolid->GetShader();
    shaderSolid->Uniform("transform", g_Renderer.GetViewCamera().GetViewProjection());
    shaderSolid->Uniform("color", 0.0f, 0.0f, 0.0f, 1.0f);

    PROFILE_START("render terrain sides");
    for (size_t i = 0; i < visiblePatches.size(); ++i)
        visiblePatches[i]->RenderSides(shaderSolid);
    PROFILE_END("render terrain sides");

    techSolid->EndPass();

    techBase->BeginPass();
    PrepareShader(techBase->GetShader(), shadow);

    PROFILE_START("render terrain base");
    CPatchRData::RenderBases(visiblePatches, techBase->GetShader(), false);
    PROFILE_END("render terrain base");

    techBase->EndPass();

    // render blends

    techBlend->BeginPass();
    PrepareShader(techBlend->GetShader(), shadow);

    // switch on blending
    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

    // no need to write to the depth buffer a second time
    glDepthMask(0);

    // render blend passes for each patch
    PROFILE_START("render terrain blends");
    CPatchRData::RenderBlends(visiblePatches, techBlend->GetShader(), false);
    PROFILE_END("render terrain blends");

    techBlend->EndPass();

    // Render terrain decals

    techDecal->BeginPass();
    PrepareShader(techDecal->GetShader(), shadow);

    PROFILE_START("render terrain decals");
    for (size_t i = 0; i < visibleDecals.size(); ++i)
        visibleDecals[i]->Render(techDecal->GetShader(), false);
    PROFILE_END("render terrain decals");

    techDecal->EndPass();

    // restore OpenGL state
    g_Renderer.BindTexture(1, 0);
    g_Renderer.BindTexture(2, 0);
    g_Renderer.BindTexture(3, 0);

    glDepthMask(1);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
    glDisable(GL_BLEND);
}

/**
 * Set up all the uniforms for a shader pass.
 */
void TerrainRenderer::PrepareShader(const CShaderProgramPtr& shader, ShadowMap* shadow)
{
    shader->Uniform("transform", g_Renderer.GetViewCamera().GetViewProjection());
    shader->Uniform("cameraPos", g_Renderer.GetViewCamera().GetOrientation().GetTranslation());

    const CLightEnv& lightEnv = g_Renderer.GetLightEnv();

    if (shadow)
    {
        shader->BindTexture("shadowTex", shadow->GetTexture());
        shader->Uniform("shadowTransform", shadow->GetTextureMatrix());

        const float* offsets = shadow->GetFilterOffsets();
        shader->Uniform("shadowOffsets1", offsets[0], offsets[1], offsets[2], offsets[3]);
        shader->Uniform("shadowOffsets2", offsets[4], offsets[5], offsets[6], offsets[7]);
    }

    shader->Uniform("ambient", lightEnv.m_UnitsAmbientColor);
    shader->Uniform("sunDir", lightEnv.GetSunDir());
    shader->Uniform("sunColor", lightEnv.m_SunColor);

    CLOSTexture& los = g_Renderer.GetScene().GetLOSTexture();
    shader->BindTexture("losTex", los.GetTexture());
    shader->Uniform("losTransform", los.GetTextureMatrix()[0], los.GetTextureMatrix()[12], 0.f, 0.f);

    shader->Uniform("ambient", lightEnv.m_TerrainAmbientColor);
    shader->Uniform("sunColor", lightEnv.m_SunColor);

    shader->BindTexture("blendTex", g_Renderer.m_hCompositeAlphaMap);
}

int ShaderRenderModifier::BeginPass(int pass)
{
	m_Technique.BeginPass(pass);

	CShaderProgramPtr shader = m_Technique.GetShader(pass);

	if (GetShadowMap() && shader->HasTexture("shadowTex"))
	{
		shader->BindTexture("shadowTex", GetShadowMap()->GetTexture());
		shader->Uniform("shadowTransform", GetShadowMap()->GetTextureMatrix());

		const float* offsets = GetShadowMap()->GetFilterOffsets();
		shader->Uniform("shadowOffsets1", offsets[0], offsets[1], offsets[2], offsets[3]);
		shader->Uniform("shadowOffsets2", offsets[4], offsets[5], offsets[6], offsets[7]);
	}

	if (GetLightEnv())
	{
		shader->Uniform("ambient", GetLightEnv()->m_UnitsAmbientColor);
		shader->Uniform("sunDir", GetLightEnv()->GetSunDir());
		shader->Uniform("sunColor", GetLightEnv()->m_SunColor);
	}

	if (shader->HasTexture("losTex"))
	{
		CLOSTexture& los = g_Renderer.GetScene().GetLOSTexture();
		shader->BindTexture("losTex", los.GetTexture());
		// Don't bother sending the whole matrix, we just need two floats (scale and translation)
		shader->Uniform("losTransform", los.GetTextureMatrix()[0], los.GetTextureMatrix()[12], 0.f, 0.f);
	}

	m_BindingInstancingTransform = shader->GetUniformBinding("instancingTransform");
	m_BindingShadingColor = shader->GetUniformBinding("shadingColor");
	m_BindingObjectColor = shader->GetUniformBinding("objectColor");
	m_BindingPlayerColor = shader->GetUniformBinding("playerColor");

	return shader->GetStreamFlags();
}

// TODO: render the minimap in a framebuffer and just draw the frambuffer texture
//	most of the time, updating the framebuffer twice a frame.
// Here it updates as ping-pong either texture or vertex array each sec to lower gpu stalling
// (those operations cause a gpu sync, which slows down the way gpu works)
void CMiniMap::Draw()
{
	PROFILE3("render minimap");

	// The terrain isn't actually initialized until the map is loaded, which
	// happens when the game is started, so abort until then.
	if (!(GetGUI() && g_Game && g_Game->IsGameStarted()))
		return;

	CSimulation2* sim = g_Game->GetSimulation2();
	CmpPtr<ICmpRangeManager> cmpRangeManager(*sim, SYSTEM_ENTITY);
	ENSURE(cmpRangeManager);

	// Set our globals in case they hadn't been set before
	m_Camera = g_Game->GetView()->GetCamera();
	m_Terrain = g_Game->GetWorld()->GetTerrain();
	m_Width  = (u32)(m_CachedActualSize.right - m_CachedActualSize.left);
	m_Height = (u32)(m_CachedActualSize.bottom - m_CachedActualSize.top);
	m_MapSize = m_Terrain->GetVerticesPerSide();
	m_TextureSize = (GLsizei)round_up_to_pow2((size_t)m_MapSize);
	m_MapScale = (cmpRangeManager->GetLosCircular() ? 1.f : 1.414f);

	if (!m_TerrainTexture || g_GameRestarted)
		CreateTextures();


	// only update 2x / second
	// (note: since units only move a few pixels per second on the minimap,
	// we can get away with infrequent updates; this is slow)
	// TODO: Update all but camera at same speed as simulation
	static double last_time;
	const double cur_time = timer_Time();
	const bool doUpdate = cur_time - last_time > 0.5;
	if (doUpdate)
	{
		last_time = cur_time;
		if (m_TerrainDirty)
			RebuildTerrainTexture();
	}

	const float x = m_CachedActualSize.left, y = m_CachedActualSize.bottom;
	const float x2 = m_CachedActualSize.right, y2 = m_CachedActualSize.top;
	const float z = GetBufferedZ();
	const float texCoordMax = (float)(m_MapSize - 1) / (float)m_TextureSize;
	const float angle = GetAngle();
	const float unitScale = (cmpRangeManager->GetLosCircular() ? 1.f : m_MapScale/2.f);

	// Disable depth updates to prevent apparent z-fighting-related issues
	//  with some drivers causing units to get drawn behind the texture.
	glDepthMask(0);

	CShaderProgramPtr shader;
	CShaderTechniquePtr tech;

	CShaderDefines baseDefines;
	baseDefines.Add(str_MINIMAP_BASE, str_1);
	tech = g_Renderer.GetShaderManager().LoadEffect(str_minimap, g_Renderer.GetSystemShaderDefines(), baseDefines);
	tech->BeginPass();
	shader = tech->GetShader();

	// Draw the main textured quad
	shader->BindTexture(str_baseTex, m_TerrainTexture);
	const CMatrix3D baseTransform = GetDefaultGuiMatrix();
	CMatrix3D baseTextureTransform;
	baseTextureTransform.SetIdentity();
	shader->Uniform(str_transform, baseTransform);
	shader->Uniform(str_textureTransform, baseTextureTransform);

	DrawTexture(shader, texCoordMax, angle, x, y, x2, y2, z);

	// Draw territory boundaries
	glEnable(GL_BLEND);

	CTerritoryTexture& territoryTexture = g_Game->GetView()->GetTerritoryTexture();

	shader->BindTexture(str_baseTex, territoryTexture.GetTexture());
	const CMatrix3D* territoryTransform = territoryTexture.GetMinimapTextureMatrix();
	shader->Uniform(str_transform, baseTransform);
	shader->Uniform(str_textureTransform, *territoryTransform);

	DrawTexture(shader, 1.0f, angle, x, y, x2, y2, z);
	tech->EndPass();

	// Draw the LOS quad in black, using alpha values from the LOS texture
	CLOSTexture& losTexture = g_Game->GetView()->GetLOSTexture();

	CShaderDefines losDefines;
	losDefines.Add(str_MINIMAP_LOS, str_1);
	tech = g_Renderer.GetShaderManager().LoadEffect(str_minimap, g_Renderer.GetSystemShaderDefines(), losDefines);
	tech->BeginPass();
	shader = tech->GetShader();
	shader->BindTexture(str_baseTex, losTexture.GetTexture());

	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

	const CMatrix3D* losTransform = losTexture.GetMinimapTextureMatrix();
//.........这里部分代码省略.........