void Clouds::samplerInit()
{
// sampler
glGenSamplers(1, &linearSampler_noMipMaps);
glSamplerParameteri(linearSampler_noMipMaps, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glSamplerParameteri(linearSampler_noMipMaps, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glSamplerParameteri(linearSampler_noMipMaps, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(linearSampler_noMipMaps, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glSamplerParameteri(linearSampler_noMipMaps, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glGenSamplers(1, &linearSampler_MipMaps);
glSamplerParameteri(linearSampler_MipMaps, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glSamplerParameteri(linearSampler_MipMaps, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glSamplerParameteri(linearSampler_MipMaps, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(linearSampler_MipMaps, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glSamplerParameteri(linearSampler_MipMaps, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
}
Texture::~Texture()
{
if (texture)
glDeleteTextures(1, &texture);
if (sampler)
glGenSamplers(1, &sampler);
PGA_Rendering_GL_checkError();
}
Sampler::Sampler()
: mSampler(0)
{
glGenSamplers(1, &mSampler);
glSamplerParameteri(mSampler, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glSamplerParameteri(mSampler, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glSamplerParameteri(mSampler, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
}
EXTERN_C_ENTER
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_ARBSamplerObjects_nglGenSamplers__IJ(JNIEnv *__env, jclass clazz, jint count, jlong samplersAddress) {
glGenSamplersPROC glGenSamplers = (glGenSamplersPROC)tlsGetFunction(668);
intptr_t samplers = (intptr_t)samplersAddress;
UNUSED_PARAM(clazz)
glGenSamplers(count, samplers);
}
void CompositeFBOQuad::initFBOQuad(char * vertSource, char * fragSource, char * name)
{
printf("================================================================\n");
printf("COMPOSITE FBO QUAD STATUS:\n");
printf("Generating sampler...\n");
// Create the sampler id.
glGenSamplers(1, &sampler);
// Load the vertex shader.
vert.loadShader(vertSource, GL_VERTEX_SHADER, true);
vert.printSource();
// Load the fragment shader.
frag.loadShader(fragSource, GL_FRAGMENT_SHADER, true);
frag.printSource();
// Link the two shaders into a shader program.
shaderProgram.setName(name);
shaderProgram.createProgram();
shaderProgram.attachShaderToProgram(&vert);
shaderProgram.attachShaderToProgram(&frag);
shaderProgram.linkProgram();
// Generate the vertex array that we will use for the quad.
printf("Generating VAO...\n");
glGenVertexArrays(1, &vertexArray);
// Generate the vertex buffers that we will use.
printf("Generating VBOs...\n");
glGenBuffers(2, vboHandles);
// Bind to our vertex array so that we can set up its buffers.
printf("Binding to vertex array...\n");
glBindVertexArray(vertexArray);
// Set up buffer 0, which will be our vertex buffer.
printf("Setting up vertex buffer...\n");
glBindBuffer(GL_ARRAY_BUFFER, vboHandles[0]);
// Since we call updateVerts() to actually populate the buffers, we simply declare
// room for their data here.
float floatsA[12];
float floatsB[8];
glBufferData(GL_ARRAY_BUFFER, 12*sizeof(float), floatsA, GL_DYNAMIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
// Set up buffer 1, which will be our uv coordinate buffer.
printf("Setting up UV buffer...\n");
glBindBuffer(GL_ARRAY_BUFFER, vboHandles[1]);
glBufferData(GL_ARRAY_BUFFER, 8*sizeof(float), floatsB, GL_DYNAMIC_DRAW);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, 0);
// Actually store the vertex data.
updateVerts();
printf("================================================================\n");
}
bool initSampler()
{
glGenSamplers(1, &SamplerName);
glSamplerParameteri(SamplerName, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glSamplerParameteri(SamplerName, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glSamplerParameteri(SamplerName, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(SamplerName, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
return glf::checkError("initSampler");
}
void GraphicsSubsystem::createSampler()
{
glGenSamplers(1, &sampler);
glSamplerParameteri(sampler, GL_TEXTURE_WRAP_S, GL_REPEAT);
glSamplerParameteri(sampler, GL_TEXTURE_WRAP_T, GL_REPEAT);
//glSamplerParameteri(sampler, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
//glSamplerParameteri(sampler, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glSamplerParameteri( sampler, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
glSamplerParameteri( sampler, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
}
/*
Loads a texture froma file to be applied to the terrain
@param the path to the texture file
@return whether or not the file was loaded correctly
*/
bool Ground::loadGroundTexture(string path) {
FREE_IMAGE_FORMAT fif = FIF_UNKNOWN;
FIBITMAP* texture(0);
fif = FreeImage_GetFileType(path.c_str(), 0);
if (fif == FIF_UNKNOWN) { // Unknown file type
//std::cout << "Unknown Filetype\n";
fif = FreeImage_GetFIFFromFilename(path.c_str());
}
if (fif == FIF_UNKNOWN) { // Still unkown file type
std::cout << "Unknown Filetype\n";
return false;
}
if (FreeImage_FIFSupportsReading(fif)) { // is the file supported by free image?
texture = FreeImage_Load(fif, path.c_str());
}
if (!texture) {
std::cout << "This file type is not supported by FreeImage\n";
return false;
}
BYTE* dataPointer = FreeImage_GetBits(texture);
textureWidth = FreeImage_GetWidth(texture);
textureHeight = FreeImage_GetHeight(texture);
textureBPP = FreeImage_GetBPP(texture);
glGenTextures(1, &textureID);
glBindTexture(GL_TEXTURE_2D, textureID);
int format = textureBPP == 24 ? GL_BGR : textureBPP == 8 ? GL_LUMINANCE : 0;
int internalFormat = textureBPP == 24 ? GL_BGR : GL_DEPTH_COMPONENT;
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, textureWidth, textureHeight, 0, format, GL_UNSIGNED_BYTE, dataPointer);
glGenerateMipmap(GL_TEXTURE_2D);
FreeImage_Unload(texture);
glGenSamplers(1, &samplerID);
texturePath = path;
// Tri linear filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glGenerateMipmap(GL_TEXTURE_2D);
return true;
}
COGLSampler::COGLSampler(GLenum minFilter, GLenum magFilter, GLenum clampS,
GLenum clampT, std::string const& debugName)
:COGLResource(COGL_SAMPLER, debugName)
{
glGenSamplers(1, &m_Resource);
glSamplerParameteri(m_Resource, GL_TEXTURE_MIN_FILTER, minFilter);
glSamplerParameteri(m_Resource, GL_TEXTURE_MAG_FILTER, magFilter);
glSamplerParameteri(m_Resource, GL_TEXTURE_WRAP_S, clampS);
glSamplerParameteri(m_Resource, GL_TEXTURE_WRAP_T, clampT);
}
//---------------------------------------------------------------------------//
void TextureSamplerGL4::create( const ObjectName& rName,
const TextureSamplerDesc& rProperties )
{
destroy();
const bool useMipmaps = rProperties.fMaxLod > 0.0f;
#if defined (FANCY_RENDERSYSTEM_USE_VALIDATION)
// Some sanity-checks
if (rProperties.minFiltering == SamplerFilterMode::ANISOTROPIC
|| rProperties.magFiltering == SamplerFilterMode::ANISOTROPIC)
{
ASSERT(rProperties.fMaxAnisotropy > 1.0f,
"Anisotropic filtering requested but maxAnisotropy level is 0");
}
if (!useMipmaps)
{
ASSERT(rProperties.minFiltering <= SamplerFilterMode::BILINEAR
&& rProperties.magFiltering <= SamplerFilterMode::BILINEAR,
"No mipmaps available but mipmap-filtering requested");
}
#endif // FANCY_RENDERSYSTEM_USE_VALIDATION
const GLuint uglMinFiltering = Internal::getGLfilteringType(rProperties.minFiltering, useMipmaps);
const GLuint uglMagFiltering = Internal::getGLfilteringType(rProperties.magFiltering, useMipmaps);
const GLuint uglAddressModeX = Internal::getGLaddressMode(rProperties.addressModeX);
const GLuint uglAddressModeY = Internal::getGLaddressMode(rProperties.addressModeY);
const GLuint uglAddressModeZ = Internal::getGLaddressMode(rProperties.addressModeZ);
const GLenum eglComparisonFunc = Adapter::toGLType(rProperties.comparisonFunc);
const GLenum eglComparisonMode = (eglComparisonFunc == GL_ALWAYS || eglComparisonFunc == GL_NEVER) ?
GL_NONE : GL_COMPARE_R_TO_TEXTURE;
GLuint uSampler;
glGenSamplers(1u, &uSampler);
glSamplerParameteri(uSampler, GL_TEXTURE_MIN_FILTER, uglMinFiltering);
glSamplerParameteri(uSampler, GL_TEXTURE_MAG_FILTER, uglMagFiltering);
glSamplerParameteri(uSampler, GL_TEXTURE_WRAP_S, uglAddressModeX);
glSamplerParameteri(uSampler, GL_TEXTURE_WRAP_T, uglAddressModeY);
glSamplerParameteri(uSampler, GL_TEXTURE_WRAP_R, uglAddressModeZ);
glSamplerParameteri(uSampler, GL_TEXTURE_COMPARE_FUNC, eglComparisonFunc);
glSamplerParameteri(uSampler, GL_TEXTURE_COMPARE_MODE, eglComparisonMode);
glSamplerParameterfv(uSampler, GL_TEXTURE_BORDER_COLOR, glm::value_ptr(rProperties.borderColor));
glSamplerParameterf(uSampler, GL_TEXTURE_MAX_ANISOTROPY_EXT, rProperties.fMaxAnisotropy);
glSamplerParameterf(uSampler, GL_TEXTURE_LOD_BIAS, rProperties.fLodBias);
glSamplerParameterf(uSampler, GL_TEXTURE_MIN_LOD, rProperties.fMinLod);
glSamplerParameterf(uSampler, GL_TEXTURE_MAX_LOD, rProperties.fMaxLod);
m_Name = rName;
m_uHandleGL = uSampler;
m_properties = rProperties;
}
void init(void)
{
glClearColor(0.3, 0.3, 0.3, 1);
glGenVertexArrays(1, &vao_quad);
glBindVertexArray(vao_quad);
#define N 30
GLfloat vertices[4][4] = {
{ -0.90, -0.90, 0, N },
{ 0.90, -0.90, N, N },
{ -0.90, 0.90, 0, 0 },
{ 0.90, 0.90, N, 0 },
};
glGenBuffers(1, &buf_quad);
glBindBuffer(GL_ARRAY_BUFFER, buf_quad);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
GLuint h_prog = build_program_from_files("quad_tex_mipmap.vert", "quad_tex_mipmap.frag");
glUseProgram(h_prog);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, sizeof(GLfloat)*4, BUFFER_OFFSET(0));
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(GLfloat)*4, BUFFER_OFFSET(sizeof(GLfloat)*2));
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glm::mat4 M = glm::rotate(glm::mat4(1.0f), -85.0f, glm::vec3(1.0f, 0.0f, 0.0f));
glm::mat4 V = glm::translate(glm::mat4(1.0f), glm::vec3(0.0f, 0.0f, -1.0f));
glm::mat4 P = glm::perspective(45.0f, 1.0f, 0.1f, 5.0f);
glUniformMatrix4fv(glGetUniformLocation(h_prog, "MVP"), 1, GL_FALSE, glm::value_ptr(P*V*M));
glUniform4f(glGetUniformLocation(h_prog, "color"), 1, 1, .5, .5);
glUniform1i(glGetUniformLocation(h_prog, "tex"), 4);
glEnable(GL_CULL_FACE);
load_textures();
glGenSamplers(1, &sampler);
glSamplerParameteri(sampler, GL_TEXTURE_WRAP_S, GL_REPEAT);
glSamplerParameteri(sampler, GL_TEXTURE_WRAP_T, GL_REPEAT);
// glSamplerParameteri(sampler, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glSamplerParameteri(sampler, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// glSamplerParameteri(sampler, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
// glSamplerParameteri(sampler, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
// glSamplerParameteri(sampler, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
// glSamplerParameteri(sampler, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_LINEAR);
glSamplerParameteri(sampler, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glBindSampler(3, sampler);
glBindSampler(4, sampler);
}
GLuint new_sampler()
{
GLuint sampler;
glGenSamplers(1, &sampler);
glSamplerParameteri(sampler, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(sampler, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glSamplerParameteri(sampler, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glSamplerParameteri(sampler, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
return sampler;
}
font_impl::font_impl()
: mIsFontLoaded(false), mTTFfile(""),
mVBO(0), mProgram(0), mSampler(0)
{
mProgram = initShaders(gFontVertShader, gFontFragShader);
memset(mCharTextures, 0, NUM_CHARS);
glGenSamplers(1, &mSampler);
glSamplerParameteri(mSampler, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(mSampler, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glSamplerParameteri(mSampler, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glSamplerParameteri(mSampler, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
}
/****************************
* LoadTexture - Loads the texture from file
****************************/
void Texture::LoadTexture(const char* file)
{
glGenTextures(1,&textureID);
glBindTexture(GL_TEXTURE_2D, textureID);
textureID=SOIL_load_OGL_texture(file,SOIL_LOAD_AUTO,textureID,SOIL_FLAG_MIPMAPS);
glGenSamplers(1,&samplerID);
glBindSampler(ogl->textureSamplerID,samplerID);
glSamplerParameteri(samplerID,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glSamplerParameteri(samplerID,GL_TEXTURE_MIN_FILTER,GL_NEAREST_MIPMAP_LINEAR);
}
bool initSampler()
{
bool Validated(true);
glGenSamplers(1, &SamplerName);
glSamplerParameteri(SamplerName, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glSamplerParameteri(SamplerName, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glSamplerParameteri(SamplerName, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(SamplerName, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
return Validated;
}
PIGLIT_GL_TEST_CONFIG_END
enum piglit_result
piglit_display(void)
{
bool pass = true;
GLuint tex, sampler, fb;
const float tex_data[16] = {0, 1, 0, 0,
1, 0, 0, 0,
1, 0, 0, 0,
1, 0, 0, 0};
const float *green = tex_data;
glClearColor(0, 0, 1, 0);
glClear(GL_COLOR_BUFFER_BIT);
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 2, 2, 0,
GL_RGBA, GL_FLOAT, tex_data);
glGenFramebuffers(1, &fb);
glBindFramebuffer(GL_FRAMEBUFFER, fb);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_2D,
tex,
0);
assert(glGetError() == 0);
glGenSamplers(1, &sampler);
glSamplerParameteri(sampler, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glSamplerParameteri(sampler, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glBindSampler(0, sampler);
glBindFramebuffer(GL_READ_FRAMEBUFFER, fb);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
glBlitFramebuffer(0, 0, 1, 1,
0, 0, piglit_width, piglit_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
glBindFramebuffer(GL_FRAMEBUFFER, piglit_winsys_fbo);
pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height, green);
piglit_present_results();
glDeleteSamplers(1, &sampler);
glDeleteTextures(1, &tex);
glDeleteFramebuffers(1, &fb);
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void TextureManager::TImpl::ItlInitializeSamplerObjects()
{
glGenSamplers(1 , &m_pSamplerObjects[CLAMPED_NEAREST_FILTERING]);
glSamplerParameteri(m_pSamplerObjects[CLAMPED_NEAREST_FILTERING], GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(m_pSamplerObjects[CLAMPED_NEAREST_FILTERING], GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glSamplerParameteri(m_pSamplerObjects[CLAMPED_NEAREST_FILTERING], GL_TEXTURE_MIN_FILTER , GL_NEAREST);
glSamplerParameteri(m_pSamplerObjects[CLAMPED_NEAREST_FILTERING], GL_TEXTURE_MAG_FILTER , GL_NEAREST);
glGenSamplers(1 , &m_pSamplerObjects[CLAMPED_BILINEAR_FILTERING]);
glSamplerParameteri(m_pSamplerObjects[CLAMPED_BILINEAR_FILTERING], GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(m_pSamplerObjects[CLAMPED_BILINEAR_FILTERING], GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glSamplerParameteri(m_pSamplerObjects[CLAMPED_BILINEAR_FILTERING], GL_TEXTURE_MIN_FILTER , GL_LINEAR);
glSamplerParameteri(m_pSamplerObjects[CLAMPED_BILINEAR_FILTERING], GL_TEXTURE_MAG_FILTER , GL_LINEAR);
glGenSamplers(1 , &m_pSamplerObjects[CLAMPED_TRILINEAR_FILTERING]);
glSamplerParameteri(m_pSamplerObjects[CLAMPED_TRILINEAR_FILTERING], GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(m_pSamplerObjects[CLAMPED_TRILINEAR_FILTERING], GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glSamplerParameteri(m_pSamplerObjects[CLAMPED_TRILINEAR_FILTERING], GL_TEXTURE_MIN_FILTER , GL_LINEAR_MIPMAP_LINEAR);
glSamplerParameteri(m_pSamplerObjects[CLAMPED_TRILINEAR_FILTERING], GL_TEXTURE_MAG_FILTER , GL_LINEAR);
}
//设置并使用着色器
void initShader(void)
{
shaderLoader.load("/Users/wistoneqqx/Documents/opengl/github/texture-maps-gl7/texture-maps/simpleShader.vert",
"/Users/wistoneqqx/Documents/opengl/github/texture-maps-gl7/texture-maps/simpleShader.frag");
shaderLoader.bind();
//定义两张纹理的采样器
glGenSamplers(1,&g_Sampler1);
glGenSamplers(1,&g_Sampler2);
glSamplerParameteri(g_Sampler1, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glSamplerParameteri(g_Sampler1, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glSamplerParameteri(g_Sampler2, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glSamplerParameteri(g_Sampler2, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
textureLocation1 = glGetUniformLocation(shaderLoader.getProgramID(), "u_texture1");
textureLocation2 = glGetUniformLocation(shaderLoader.getProgramID(), "u_texture2");
if(textureLocation1==-1 && textureLocation2==-1)
printf("Get textureLocation error!\n");
}
SamplerCache::SamplerCache()
: m_last_max_anisotropy()
{
glGenSamplers(2, m_sampler_id);
glSamplerParameteri(m_sampler_id[0], GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glSamplerParameteri(m_sampler_id[0], GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glSamplerParameteri(m_sampler_id[0], GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(m_sampler_id[0], GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glSamplerParameteri(m_sampler_id[1], GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glSamplerParameteri(m_sampler_id[1], GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glSamplerParameteri(m_sampler_id[1], GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(m_sampler_id[1], GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
void Mesh::loadTexture(const std::string &path)
{
if(glIsTexture(m_meshTexture) == GL_FALSE)
glGenTextures(1, &m_meshTexture);
if(glIsSampler(m_meshSampler) == GL_FALSE)
glGenSamplers(1, &m_meshSampler);
// Setup sampler data
glSamplerParameteri(m_meshSampler, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glSamplerParameteri(m_meshSampler, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glSamplerParameteri(m_meshSampler, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(m_meshSampler, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
SDL_Surface* surface = IMG_Load(path.c_str());
GLint readFormat = GL_RGB;
if(surface->format->BytesPerPixel == 4)
{
if(surface->format->Rmask == 0xFF)
readFormat = GL_RGBA;
else if(surface->format->Bmask == 0xFF)
readFormat = GL_BGRA;
}
else if(surface->format->BytesPerPixel == 3)
{
if(surface->format->Rmask == 0xFF)
readFormat = GL_RGB;
else if(surface->format->Bmask == 0xFF)
readFormat = GL_BGR;
}
if(surface->format->Rmask)
GLfloat texDat[] =
{
1.f,1.f,1.f,1.f,
0.f,1.f, 0.f, 1.f,
1.f,1.f,1.f,1.f,
0.f,1.f, 0.f, 1.f,
};
// Setup texture data
glBindTexture(GL_TEXTURE_2D, m_meshTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, surface->w, surface->h, 0, readFormat, GL_UNSIGNED_BYTE, surface->pixels);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
glBindTexture(GL_TEXTURE_2D, 0);
SDL_FreeSurface(surface);
}
////////////////////////////////////////////////////////////////////////////////
// SoftShadowsRenderer::initRendering()
////////////////////////////////////////////////////////////////////////////////
void SoftShadowsRenderer::initRendering()
{
GLint depthBits;
glGetIntegerv(GL_DEPTH_BITS, &depthBits);
LOGI("depth bits = %d\n", depthBits);
// Setup the eye's view parameters
initCamera(
NvCameraXformType::MAIN,
nv::vec3f(-0.644995f, 0.614183f, 0.660632f) * 1.5f, // position
nv::vec3f(0.0f, 0.0f, 0.0f)); // look at point
// Setup the light's view parameters
initCamera(
NvCameraXformType::SECONDARY,
nv::vec3f(3.57088f, 6.989f, 5.19698f) * 1.5f, // position
nv::vec3f(0.0f, 0.0f, 0.0f)); // look at point
// Generate the samplers
glGenSamplers(5, m_samplers);
CHECK_GL_ERROR();
for (GLuint unit = 0; unit < NumTextureUnits; ++unit)
{
glBindSampler(unit, m_samplers[unit]);
}
// Create resources
createShadowMap();
createGeometry();
createTextures();
createShaders();
// Set states that don't change
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
glDepthFunc(GL_LESS);
glCullFace(GL_BACK);
glDisable(GL_BLEND);
glClearColor(
m_backgroundColor.x,
m_backgroundColor.y,
m_backgroundColor.z,
m_backgroundColor.w);
glClearDepthf(1.0f);
for (GLuint unit = 0; unit < NumTextureUnits; ++unit)
{
glBindSampler(unit, 0);
}
}
static cg_sampler_cache_entry_t *
_cg_sampler_cache_get_entry_gl(cg_sampler_cache_t *cache,
const cg_sampler_cache_entry_t *key)
{
cg_sampler_cache_entry_t *entry;
entry = c_hash_table_lookup(cache->hash_table_gl, key);
if (entry == NULL) {
cg_device_t *dev = cache->dev;
entry = c_slice_dup(cg_sampler_cache_entry_t, key);
if (_cg_has_private_feature(dev,
CG_PRIVATE_FEATURE_SAMPLER_OBJECTS)) {
GE(dev, glGenSamplers(1, &entry->sampler_object));
GE(dev,
glSamplerParameteri(entry->sampler_object,
GL_TEXTURE_MIN_FILTER,
entry->min_filter));
GE(dev,
glSamplerParameteri(entry->sampler_object,
GL_TEXTURE_MAG_FILTER,
entry->mag_filter));
set_wrap_mode(dev,
entry->sampler_object,
GL_TEXTURE_WRAP_S,
entry->wrap_mode_s);
set_wrap_mode(dev,
entry->sampler_object,
GL_TEXTURE_WRAP_T,
entry->wrap_mode_t);
set_wrap_mode(dev,
entry->sampler_object,
GL_TEXTURE_WRAP_R,
entry->wrap_mode_p);
} else {
/* If sampler objects aren't supported then we'll invent a
unique number so that pipelines can still compare the
unique state just by comparing the sampler object
numbers */
entry->sampler_object = cache->next_fake_sampler_object_number++;
}
c_hash_table_insert(cache->hash_table_gl, entry, entry);
}
return entry;
}
void OGLWindow::InitOGLState()
{
VSync(true);
glClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
//Initialise OGL shader
m_shader = new OGLShaderProgram();
m_skyBoxShader = new OGLShaderProgram();
m_shader->CreateShaderProgram();
m_shader->AttachAndCompileShaderFromFile(L"../asset/shader/glsl/basic.vert", SHADER_VERTEX);
m_shader->AttachAndCompileShaderFromFile(L"../asset/shader/glsl/basic.frag", SHADER_FRAGMENT);
m_shader->BindAttributeLocation( 0, "position" );
m_shader->BindAttributeLocation( 1, "inNormal" );
m_shader->BindAttributeLocation( 2, "inUV" );
//shading skybox via shaders
m_skyBoxShader->CreateShaderProgram();
m_skyBoxShader->AttachAndCompileShaderFromFile(L"../asset/shader/glsl/skybox.vert", SHADER_VERTEX);
m_skyBoxShader->AttachAndCompileShaderFromFile(L"../asset/shader/glsl/skybox.frag", SHADER_FRAGMENT);
m_skyBoxShader->BindAttributeLocation(0, "position");
m_skyBoxShader->BindAttributeLocation(1, "inNormal");
m_skyBoxShader->BindAttributeLocation(2, "inUV");
glBindFragDataLocation( m_shader->GetProgramHandle(), 0, "outFrag" );
glBindFragDataLocation(m_skyBoxShader->GetProgramHandle(), 0, "outFrag");
m_shader->BuildShaderProgram();
m_shader->ActivateShaderProgram();
m_skyBoxShader->BuildShaderProgram();
m_shader->ActivateShaderProgram();
glUniform1i( m_uniform_texture, 0 );
//Create a texture sampler
glGenSamplers( 1, (GLuint*)(&m_texDefaultSampler) );
glSamplerParameteri(m_texDefaultSampler , GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(m_texDefaultSampler , GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glSamplerParameteri(m_texDefaultSampler , GL_TEXTURE_MIN_FILTER , GL_LINEAR);
glSamplerParameteri(m_texDefaultSampler , GL_TEXTURE_MAG_FILTER , GL_LINEAR);
}
static void exec(std::vector<unsigned> &v, std::vector<GLenum> &e)
{
unsigned id;
glGenSamplers(1, &id);
glSamplerParameteri(id, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glSamplerParameteri(id, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glSamplerParameteri(id, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(id, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glSamplerParameterf(id, GL_TEXTURE_MAX_ANISOTROPY_EXT, 1.);
v.push_back(createNearestSampler());
e.push_back(GL_TEXTURE_2D);
CreateSamplers<tp...>::exec(v, e);
}
GLuint CreateSampler(GLenum min_filter, GLenum mag_filter, GLenum u_wrap, GLenum v_wrap)
{
GLuint sampler_id;
glGenSamplers(1, &sampler_id);
if (NULL == sampler_id) {
return NULL;
}
glSamplerParameteri(sampler_id, GL_TEXTURE_MIN_FILTER, min_filter); // Default: GL_NEAREST_MIPMAP_LINEAR
glSamplerParameteri(sampler_id, GL_TEXTURE_MAG_FILTER, mag_filter); // Default: GL_LINEAR
glSamplerParameteri(sampler_id, GL_TEXTURE_WRAP_S, u_wrap); // Default: GL_REPEAT
glSamplerParameteri(sampler_id, GL_TEXTURE_WRAP_T, v_wrap); // Default: GL_REPEAT
m_samplerID = sampler_id;
return sampler_id;
}
void RGBAImage::sendToOpenGL(GLuint magFilter, GLuint minFilter, bool createMipMap)
{
if (width <= 0 || height <= 0) return;
glGenTextures(1, &textureId);
glBindTexture(GL_TEXTURE_2D, textureId);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, &pixels[0]);
if (createMipMap) glGenerateMipmap(GL_TEXTURE_2D);
glGenSamplers(1, &samplerId);
glBindSampler(textureId, samplerId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, magFilter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, minFilter);
}
void CTexture::CreateEmptyTexture(int a_iWidth, int a_iHeight, GLenum format)
{
glGenTextures(1, &uiTexture);
glBindTexture(GL_TEXTURE_2D, uiTexture);
if(format == GL_RGBA || format == GL_BGRA)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, a_iWidth, a_iHeight, 0, format, GL_UNSIGNED_BYTE, NULL);
// We must handle this because of internal format parameter
else if(format == GL_RGB || format == GL_BGR)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, a_iWidth, a_iHeight, 0, format, GL_UNSIGNED_BYTE, NULL);
else
glTexImage2D(GL_TEXTURE_2D, 0, format, a_iWidth, a_iHeight, 0, format, GL_UNSIGNED_BYTE, NULL);
glGenSamplers(1, &uiSampler);
}
//-----------------------------------------------------------------------------------
int Renderer::CreateSampler(GLenum min_filter, //fragment counts for more than one texel, how does it shrink?
GLenum magFilter, //more texels than fragments, how does it stretch?
GLenum uWrap, //If u is < 0 or > 1, how does it behave?
GLenum vWrap) //Same, but for v
{
GLuint id;
glGenSamplers(1, &id);
glSamplerParameteri(id, GL_TEXTURE_MIN_FILTER, min_filter);
glSamplerParameteri(id, GL_TEXTURE_MAG_FILTER, magFilter);
glSamplerParameteri(id, GL_TEXTURE_WRAP_S, uWrap); //For some reason, OpenGL refers to UV's as ST's
glSamplerParameteri(id, GL_TEXTURE_WRAP_T, vWrap);
return id;
}
SamplerCache::Value& SamplerCache::GetEntry(const Params& params)
{
auto& val = m_cache[params];
if (!val.sampler_id)
{
// Sampler not found in cache, create it.
glGenSamplers(1, &val.sampler_id);
SetParameters(val.sampler_id, params);
// TODO: Maybe kill old samplers if the cache gets huge. It doesn't seem to get huge though.
//ERROR_LOG(VIDEO, "Sampler cache size is now %ld.", m_cache.size());
}
return val;
}
void Application::makeSceneImplementation()
{
_buildingMaterial.initialize();
_roadMaterial.initialize();
_groundMaterial.initialize();
_buildingTexId = loadTexture( "../images/brick.jpg" );
_roadTexId = loadTexture( "../images/road.jpg" );
_groundTexId = loadTexture( "../images/ground.jpg" );
//загрузка 3д-моделей
_buildings = Mesh::makeBuildings(worker);
_roads = Mesh::makeRoads( worker );
_ground = Mesh::makeGround();
//Инициализация значений переменных освщения
_lightPos = glm::vec4( 20.0f, 20.0f, 0.5f, 1.0f );
_ambientColor = glm::vec3( 0.2, 0.2, 0.2 );
_diffuseColor = glm::vec3( 0.8, 0.8, 0.8 );
_specularColor = glm::vec3( 0.5, 0.5, 0.5 );
//Инициализация сэмплера - объекта, который хранит параметры чтения из текстуры
glGenSamplers( 1, &_sampler );
glSamplerParameteri( _sampler, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
glSamplerParameteri( _sampler, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
glSamplerParameteri( _sampler, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
glSamplerParameteri( _sampler, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
glGenSamplers( 1, &_repeatSampler );
glSamplerParameteri( _repeatSampler, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
glSamplerParameteri( _repeatSampler, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
glSamplerParameterf( _repeatSampler, GL_TEXTURE_MAX_ANISOTROPY_EXT, 4.0f );
glSamplerParameteri( _repeatSampler, GL_TEXTURE_WRAP_S, GL_REPEAT );
glSamplerParameteri( _repeatSampler, GL_TEXTURE_WRAP_T, GL_REPEAT );
}