本文整理汇总了C++中JSONWriter类的典型用法代码示例。如果您正苦于以下问题：C++ JSONWriter类的具体用法？C++ JSONWriter怎么用？C++ JSONWriter使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了JSONWriter类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: dumpDrawableImages
/**
* Dump images of current draw drawable/window.
*/
static void
dumpDrawableImages(JSONWriter &json, Context &context)
{
GLint width, height;
if (!getDrawableBounds(&width, &height)) {
return;
}
GLint draw_buffer = GL_NONE;
if (context.ES) {
draw_buffer = GL_BACK;
} else {
glGetIntegerv(GL_DRAW_BUFFER, &draw_buffer);
glReadBuffer(draw_buffer);
}
if (draw_buffer != GL_NONE) {
GLint read_buffer = GL_NONE;
if (!context.ES) {
glGetIntegerv(GL_READ_BUFFER, &read_buffer);
}
GLint alpha_bits = 0;
#if 0
// XXX: Ignore alpha until we are able to match the traced visual
glGetIntegerv(GL_ALPHA_BITS, &alpha_bits);
#endif
GLenum format = alpha_bits ? GL_RGBA : GL_RGB;
json.beginMember(enumToString(draw_buffer));
dumpReadBufferImage(json, width, height, format);
json.endMember();
if (!context.ES) {
glReadBuffer(read_buffer);
}
}
if (!context.ES) {
GLint depth_bits = 0;
glGetIntegerv(GL_DEPTH_BITS, &depth_bits);
if (depth_bits) {
json.beginMember("GL_DEPTH_COMPONENT");
dumpReadBufferImage(json, width, height, GL_DEPTH_COMPONENT);
json.endMember();
}
GLint stencil_bits = 0;
glGetIntegerv(GL_STENCIL_BITS, &stencil_bits);
if (stencil_bits) {
json.beginMember("GL_STENCIL_INDEX");
dumpReadBufferImage(json, width, height, GL_STENCIL_INDEX);
json.endMember();
}
}
}示例2: dumpArbProgram
static inline void
dumpArbProgram(JSONWriter &json, GLenum target)
{
if (!glIsEnabled(target)) {
return;
}
GLint program_length = 0;
glGetProgramivARB(target, GL_PROGRAM_LENGTH_ARB, &program_length);
if (!program_length) {
return;
}
GLchar *source = new GLchar[program_length + 1];
source[0] = 0;
glGetProgramStringARB(target, GL_PROGRAM_STRING_ARB, source);
source[program_length] = 0;
json.beginMember(enumToString(target));
json.writeString(source);
json.endMember();
delete [] source;
}示例3: dumpTextures
void
dumpTextures(JSONWriter &json, IDirect3DDevice9 *pDevice)
{
HRESULT hr;
json.beginMember("textures");
json.beginObject();
for (DWORD Stage = 0; Stage < 16; ++Stage) {
com_ptr<IDirect3DBaseTexture9> pTexture;
hr = pDevice->GetTexture(Stage, &pTexture);
if (FAILED(hr)) {
continue;
}
if (!pTexture) {
continue;
}
D3DRESOURCETYPE Type = pTexture->GetType();
DWORD NumFaces = Type == D3DRTYPE_CUBETEXTURE ? 6 : 1;
DWORD NumLevels = pTexture->GetLevelCount();
for (DWORD Face = 0; Face < NumFaces; ++Face) {
for (DWORD Level = 0; Level < NumLevels; ++Level) {
image::Image *image;
image = getTextureImage(pDevice, pTexture, static_cast<D3DCUBEMAP_FACES>(Face), Level);
if (image) {
char label[128];
if (Type == D3DRTYPE_CUBETEXTURE) {
_snprintf(label, sizeof label, "PS_RESOURCE_%lu_FACE_%lu_LEVEL_%lu", Stage, Face, Level);
} else {
_snprintf(label, sizeof label, "PS_RESOURCE_%lu_LEVEL_%lu", Stage, Level);
}
json.beginMember(label);
json.writeImage(image);
json.endMember(); // PS_RESOURCE_*
}
}
}
}
json.endObject();
json.endMember(); // textures
}示例4: dumpBlendState
static void
dumpBlendState(JSONWriter &json, ID3D11DeviceContext *pDeviceContext)
{
com_ptr<ID3D11BlendState> pBlendState;
FLOAT BlendFactor[4];
UINT SampleMask;
pDeviceContext->OMGetBlendState(&pBlendState, BlendFactor, &SampleMask);
json.beginMember("BlendState");
dumpStateObjectDesc(json, pBlendState);
json.endMember(); // BlendState
json.beginMember("BlendFactor");
json.beginArray();
json.writeFloat(BlendFactor[0]);
json.writeFloat(BlendFactor[1]);
json.writeFloat(BlendFactor[2]);
json.writeFloat(BlendFactor[3]);
json.endArray();
json.endMember(); // BlendFactor
json.writeIntMember("SampleMask", SampleMask);
}示例5: CheckTlbPath
static void
CheckTlbPath(JSONWriter& aJson, const nsAString& aTypelibPath)
{
const nsString& flatPath = PromiseFlatString(aTypelibPath);
DWORD bufCharLen = ExpandEnvironmentStrings(flatPath.get(), nullptr, 0);
auto buf = MakeUnique<WCHAR[]>(bufCharLen);
if (!ExpandEnvironmentStrings(flatPath.get(), buf.get(), bufCharLen)) {
return;
}
// See whether this tlb can actually be loaded
RefPtr<ITypeLib> typeLib;
HRESULT hr = LoadTypeLibEx(buf.get(), REGKIND_NONE, getter_AddRefs(typeLib));
nsPrintfCString loadResult("0x%08X", hr);
aJson.StringProperty("LoadResult", loadResult.get());
}示例6: ToJSON
void DeprecationReportBody::ToJSON(JSONWriter& aWriter) const {
aWriter.StringProperty("id", NS_ConvertUTF16toUTF8(mId).get());
// TODO: anticipatedRemoval? https://github.com/w3c/reporting/issues/132
aWriter.StringProperty("message", NS_ConvertUTF16toUTF8(mMessage).get());
if (mSourceFile.IsEmpty()) {
aWriter.NullProperty("sourceFile");
} else {
aWriter.StringProperty("sourceFile",
NS_ConvertUTF16toUTF8(mSourceFile).get());
}
if (mLineNumber.IsNull()) {
aWriter.NullProperty("lineNumber");
} else {
aWriter.IntProperty("lineNumber", mLineNumber.Value());
}
if (mColumnNumber.IsNull()) {
aWriter.NullProperty("columnNumber");
} else {
aWriter.IntProperty("columnNumber", mColumnNumber.Value());
}
}示例7: dumpDrawableImages
/**
* Dump images of current draw drawable/window.
*/
static void
dumpDrawableImages(JSONWriter &json)
{
GLint width, height;
if (!getDrawableBounds(&width, &height)) {
return;
}
GLint draw_buffer = GL_NONE;
glGetIntegerv(GL_DRAW_BUFFER, &draw_buffer);
glReadBuffer(draw_buffer);
if (draw_buffer != GL_NONE) {
GLint read_buffer = GL_NONE;
glGetIntegerv(GL_READ_BUFFER, &read_buffer);
GLint alpha_bits = 0;
glGetIntegerv(GL_ALPHA_BITS, &alpha_bits);
GLenum format = alpha_bits ? GL_RGBA : GL_RGB;
json.beginMember(enumToString(draw_buffer));
dumpReadBufferImage(json, width, height, format);
json.endMember();
glReadBuffer(read_buffer);
}
GLint depth_bits = 0;
glGetIntegerv(GL_DEPTH_BITS, &depth_bits);
if (depth_bits) {
json.beginMember("GL_DEPTH_COMPONENT");
dumpReadBufferImage(json, width, height, GL_DEPTH_COMPONENT);
json.endMember();
}
GLint stencil_bits = 0;
glGetIntegerv(GL_STENCIL_BITS, &stencil_bits);
if (stencil_bits) {
json.beginMember("GL_STENCIL_INDEX");
dumpReadBufferImage(json, width, height, GL_STENCIL_INDEX);
json.endMember();
}
}示例8: serialize
bool JSONObject::serialize(JSONWriter &writer){
if (_properties.size() > 0){
writer.writeStartObject();
bool wroteOne = false;
for (auto iter = _properties.begin(); iter != _properties.end(); iter++){
if (iter->second && (*(iter->second)).hasValue()){
if (wroteOne){
writer.writeRaw(",");
}
writer.writeNext();
writer.writeKey(iter->first);
writer.writeRaw(": ");
(*(iter->second)).serialize(writer);
wroteOne = true;
}
}
writer.writeEndObject();
return true;
}
return false;
}示例9: dumpReadBufferImage
/**
* Dump the image of the currently bound read buffer.
*/
static inline void
dumpReadBufferImage(JSONWriter &json, GLint width, GLint height, GLenum format,
GLint internalFormat = GL_NONE)
{
GLint channels = _gl_format_channels(format);
if (internalFormat == GL_NONE) {
internalFormat = format;
}
Context context;
json.beginObject();
// Tell the GUI this is no ordinary object, but an image
json.writeStringMember("__class__", "image");
json.writeNumberMember("__width__", width);
json.writeNumberMember("__height__", height);
json.writeNumberMember("__depth__", 1);
json.writeStringMember("__format__", enumToString(internalFormat));
// Hardcoded for now, but we could chose types more adequate to the
// texture internal format
json.writeStringMember("__type__", "uint8");
json.writeBoolMember("__normalized__", true);
json.writeNumberMember("__channels__", channels);
GLenum type = GL_UNSIGNED_BYTE;
#if DEPTH_AS_RGBA
if (format == GL_DEPTH_COMPONENT) {
type = GL_UNSIGNED_INT;
channels = 4;
}
#endif
GLubyte *pixels = new GLubyte[width*height*channels];
// TODO: reset imaging state too
context.resetPixelPackState();
glReadPixels(0, 0, width, height, format, type, pixels);
context.restorePixelPackState();
json.beginMember("__data__");
char *pngBuffer;
int pngBufferSize;
image::writePixelsToBuffer(pixels, width, height, channels, true, &pngBuffer, &pngBufferSize);
//std::cerr <<" Before = "<<(width * height * channels * sizeof *pixels)
// <<", after = "<<pngBufferSize << ", ratio = " << double(width * height * channels * sizeof *pixels)/pngBufferSize;
json.writeBase64(pngBuffer, pngBufferSize);
free(pngBuffer);
json.endMember(); // __data__
delete [] pixels;
json.endObject();
}示例10: dumpActiveTextureLevel
static inline void
dumpActiveTextureLevel(JSONWriter &json, Context &context, GLenum target, GLint level)
{
ImageDesc desc;
if (!getActiveTextureLevelDesc(context, target, level, desc)) {
return;
}
char label[512];
GLint active_texture = GL_TEXTURE0;
glGetIntegerv(GL_ACTIVE_TEXTURE, &active_texture);
snprintf(label, sizeof label, "%s, %s, level = %d",
enumToString(active_texture), enumToString(target), level);
json.beginMember(label);
json.beginObject();
GLuint channels;
GLenum format;
if (!context.ES && isDepthFormat(desc.internalFormat)) {
format = GL_DEPTH_COMPONENT;
channels = 1;
} else {
format = GL_RGBA;
channels = 4;
}
// Tell the GUI this is no ordinary object, but an image
json.writeStringMember("__class__", "image");
json.writeNumberMember("__width__", desc.width);
json.writeNumberMember("__height__", desc.height);
json.writeNumberMember("__depth__", desc.depth);
json.writeStringMember("__format__", enumToString(desc.internalFormat));
// Hardcoded for now, but we could chose types more adequate to the
// texture internal format
json.writeStringMember("__type__", "uint8");
json.writeBoolMember("__normalized__", true);
json.writeNumberMember("__channels__", channels);
GLubyte *pixels = new GLubyte[desc.depth*desc.width*desc.height*channels];
context.resetPixelPackState();
if (context.ES) {
getTexImageOES(target, level, desc, pixels);
} else {
glGetTexImage(target, level, format, GL_UNSIGNED_BYTE, pixels);
}
context.restorePixelPackState();
json.beginMember("__data__");
char *pngBuffer;
int pngBufferSize;
image::writePixelsToBuffer(pixels, desc.width, desc.height, channels, true, &pngBuffer, &pngBufferSize);
json.writeBase64(pngBuffer, pngBufferSize);
free(pngBuffer);
json.endMember(); // __data__
delete [] pixels;
json.endObject();
}示例11: dumpFramebuffer
void
dumpFramebuffer(JSONWriter &json, Context &context)
{
json.beginMember("framebuffer");
json.beginObject();
GLint boundDrawFbo = 0, boundReadFbo = 0;
glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &boundDrawFbo);
glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &boundReadFbo);
if (!boundDrawFbo) {
dumpDrawableImages(json, context);
} else if (context.ES) {
dumpFramebufferAttachments(json, context, GL_FRAMEBUFFER);
} else {
GLint colorRb = 0, stencilRb = 0, depthRb = 0;
GLint draw_buffer0 = GL_NONE;
glGetIntegerv(GL_DRAW_BUFFER0, &draw_buffer0);
bool multisample = false;
GLint boundRb = 0;
glGetIntegerv(GL_RENDERBUFFER_BINDING, &boundRb);
GLint object_type;
glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, draw_buffer0, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &object_type);
if (object_type == GL_RENDERBUFFER) {
glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, draw_buffer0, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME, &colorRb);
glBindRenderbuffer(GL_RENDERBUFFER, colorRb);
GLint samples = 0;
glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_SAMPLES, &samples);
if (samples) {
multisample = true;
}
}
glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &object_type);
if (object_type == GL_RENDERBUFFER) {
glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME, &depthRb);
glBindRenderbuffer(GL_RENDERBUFFER, depthRb);
GLint samples = 0;
glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_SAMPLES, &samples);
if (samples) {
multisample = true;
}
}
glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &object_type);
if (object_type == GL_RENDERBUFFER) {
glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME, &stencilRb);
glBindRenderbuffer(GL_RENDERBUFFER, stencilRb);
GLint samples = 0;
glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_SAMPLES, &samples);
if (samples) {
multisample = true;
}
}
glBindRenderbuffer(GL_RENDERBUFFER, boundRb);
GLuint rbs[3];
GLint numRbs = 0;
GLuint fboCopy = 0;
if (multisample) {
// glReadPixels doesnt support multisampled buffers so we need
// to blit the fbo to a temporary one
fboCopy = downsampledFramebuffer(context,
boundDrawFbo, draw_buffer0,
colorRb, depthRb, stencilRb,
rbs, &numRbs);
}
dumpFramebufferAttachments(json, context, GL_DRAW_FRAMEBUFFER);
if (multisample) {
glBindRenderbuffer(GL_RENDERBUFFER_BINDING, boundRb);
glDeleteRenderbuffers(numRbs, rbs);
glDeleteFramebuffers(1, &fboCopy);
}
glBindFramebuffer(GL_READ_FRAMEBUFFER, boundReadFbo);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, boundDrawFbo);
}
json.endObject();
json.endMember(); // framebuffer
}示例12: dumpReadBufferImage
/**
* Dump the image of the currently bound read buffer.
*/
static inline void
dumpReadBufferImage(JSONWriter &json, GLint width, GLint height, GLenum format)
{
GLint channels = __gl_format_channels(format);
json.beginObject();
// Tell the GUI this is no ordinary object, but an image
json.writeStringMember("__class__", "image");
json.writeNumberMember("__width__", width);
json.writeNumberMember("__height__", height);
json.writeNumberMember("__depth__", 1);
// Hardcoded for now, but we could chose types more adequate to the
// texture internal format
json.writeStringMember("__type__", "uint8");
json.writeBoolMember("__normalized__", true);
json.writeNumberMember("__channels__", channels);
GLubyte *pixels = new GLubyte[width*height*channels];
resetPixelPackState();
glReadPixels(0, 0, width, height, format, GL_UNSIGNED_BYTE, pixels);
restorePixelPackState();
json.beginMember("__data__");
char *pngBuffer;
int pngBufferSize;
Image::writePixelsToBuffer(pixels, width, height, channels, false, &pngBuffer, &pngBufferSize);
//std::cerr <<" Before = "<<(width * height * channels * sizeof *pixels)
// <<", after = "<<pngBufferSize << ", ratio = " << double(width * height * channels * sizeof *pixels)/pngBufferSize;
json.writeBase64(pngBuffer, pngBufferSize);
free(pngBuffer);
json.endMember(); // __data__
delete [] pixels;
json.endObject();
}示例13: dumpShadersUniforms
void
dumpShadersUniforms(JSONWriter &json, Context &context)
{
GLint pipeline = 0;
GLint vertex_program = 0;
GLint fragment_program = 0;
GLint geometry_program = 0;
GLint tess_control_program = 0;
GLint tess_evaluation_program = 0;
GLint compute_program = 0;
if (!context.ES) {
glGetIntegerv(GL_PROGRAM_PIPELINE_BINDING, &pipeline);
if (pipeline) {
glGetProgramPipelineiv(pipeline, GL_VERTEX_SHADER, &vertex_program);
glGetProgramPipelineiv(pipeline, GL_FRAGMENT_SHADER, &fragment_program);
glGetProgramPipelineiv(pipeline, GL_GEOMETRY_SHADER, &geometry_program);
glGetProgramPipelineiv(pipeline, GL_TESS_CONTROL_SHADER, &tess_control_program);
glGetProgramPipelineiv(pipeline, GL_TESS_EVALUATION_SHADER, &tess_evaluation_program);
glGetProgramPipelineiv(pipeline, GL_COMPUTE_SHADER, &compute_program);
}
}
GLint program = 0;
if (!pipeline) {
glGetIntegerv(GL_CURRENT_PROGRAM, &program);
}
json.beginMember("shaders");
json.beginObject();
if (pipeline) {
dumpProgram(json, vertex_program);
dumpProgram(json, fragment_program);
dumpProgram(json, geometry_program);
dumpProgram(json, tess_control_program);
dumpProgram(json, tess_evaluation_program);
dumpProgram(json, compute_program);
} else if (program) {
dumpProgram(json, program);
} else {
dumpArbProgram(json, GL_FRAGMENT_PROGRAM_ARB);
dumpArbProgram(json, GL_VERTEX_PROGRAM_ARB);
}
json.endObject();
json.endMember(); // shaders
json.beginMember("uniforms");
json.beginObject();
if (pipeline) {
dumpProgramUniformsStage(json, vertex_program, "GL_VERTEX_SHADER");
dumpProgramUniformsStage(json, fragment_program, "GL_FRAGMENT_SHADER");
dumpProgramUniformsStage(json, geometry_program, "GL_GEOMETRY_SHADER");
dumpProgramUniformsStage(json, tess_control_program, "GL_TESS_CONTROL_SHADER");
dumpProgramUniformsStage(json, tess_evaluation_program, "GL_TESS_EVALUATION_SHADER");
dumpProgramUniformsStage(json, compute_program, "GL_COMPUTE_SHADER");
} else if (program) {
dumpProgramUniforms(json, program);
} else {
dumpArbProgramUniforms(json, GL_FRAGMENT_PROGRAM_ARB, "fp.");
dumpArbProgramUniforms(json, GL_VERTEX_PROGRAM_ARB, "vp.");
}
json.endObject();
json.endMember(); // uniforms
json.beginMember("buffers");
json.beginObject();
if (program) {
dumpTransformFeedback(json, program);
}
json.endObject();
json.endMember(); // buffers
}示例14: dumpArbProgramUniforms
static inline void
dumpArbProgramUniforms(JSONWriter &json, GLenum target, const char *prefix)
{
if (!glIsEnabled(target)) {
return;
}
GLint program_parameters = 0;
glGetProgramivARB(target, GL_PROGRAM_PARAMETERS_ARB, &program_parameters);
if (!program_parameters) {
return;
}
GLint max_program_local_parameters = 0;
glGetProgramivARB(target, GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB, &max_program_local_parameters);
for (GLint index = 0; index < max_program_local_parameters; ++index) {
GLdouble params[4] = {0, 0, 0, 0};
glGetProgramLocalParameterdvARB(target, index, params);
if (!params[0] && !params[1] && !params[2] && !params[3]) {
continue;
}
char name[256];
snprintf(name, sizeof name, "%sprogram.local[%i]", prefix, index);
json.beginMember(name);
json.beginArray();
json.writeFloat(params[0]);
json.writeFloat(params[1]);
json.writeFloat(params[2]);
json.writeFloat(params[3]);
json.endArray();
json.endMember();
}
GLint max_program_env_parameters = 0;
glGetProgramivARB(target, GL_MAX_PROGRAM_ENV_PARAMETERS_ARB, &max_program_env_parameters);
for (GLint index = 0; index < max_program_env_parameters; ++index) {
GLdouble params[4] = {0, 0, 0, 0};
glGetProgramEnvParameterdvARB(target, index, params);
if (!params[0] && !params[1] && !params[2] && !params[3]) {
continue;
}
char name[256];
snprintf(name, sizeof name, "%sprogram.env[%i]", prefix, index);
json.beginMember(name);
json.beginArray();
json.writeFloat(params[0]);
json.writeFloat(params[1]);
json.writeFloat(params[2]);
json.writeFloat(params[3]);
json.endArray();
json.endMember();
}
}示例15: dumpTransformFeedback
static inline void
dumpTransformFeedback(JSONWriter &json, GLint program)
{
GLint transform_feedback_varyings = 0;
glGetProgramiv(program, GL_TRANSFORM_FEEDBACK_VARYINGS, &transform_feedback_varyings);
if (!transform_feedback_varyings) {
return;
}
GLint max_name_length = 0;
glGetProgramiv(program, GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH, &max_name_length);
std::vector<GLchar> name(max_name_length);
GLint buffer_mode = GL_INTERLEAVED_ATTRIBS;
glGetProgramiv(program, GL_TRANSFORM_FEEDBACK_BUFFER_MODE, &buffer_mode);
std::vector<TransformFeedbackAttrib> attribs(transform_feedback_varyings);
// Calculate the offsets and strides of each attribute according to
// the value of GL_TRANSFORM_FEEDBACK_BUFFER_MODE
GLsizei cum_attrib_offset = 0;
for (GLint slot = 0; slot < transform_feedback_varyings; ++slot) {
TransformFeedbackAttrib & attrib = attribs[slot];
GLsizei length = 0;
GLsizei size = 0;
GLenum type = GL_NONE;
glGetTransformFeedbackVarying(program, slot, max_name_length, &length, &size, &type, &name[0]);
attrib.name = &name[0];
const AttribDesc & desc = attrib.desc = AttribDesc(type, size);
if (!desc) {
return;
}
attrib.size = desc.arrayStride;
switch (buffer_mode) {
case GL_INTERLEAVED_ATTRIBS:
attrib.offset = cum_attrib_offset;
break;
case GL_SEPARATE_ATTRIBS:
attrib.offset = 0;
attrib.stride = desc.arrayStride;
break;
default:
assert(0);
attrib.offset = 0;
attrib.stride = 0;
}
cum_attrib_offset += desc.arrayStride;
}
if (buffer_mode == GL_INTERLEAVED_ATTRIBS) {
for (GLint slot = 0; slot < transform_feedback_varyings; ++slot) {
TransformFeedbackAttrib & attrib = attribs[slot];
attrib.stride = cum_attrib_offset;
}
}
GLint previous_tbo = 0;
glGetIntegerv(GL_TRANSFORM_FEEDBACK_BUFFER_BINDING, &previous_tbo);
// Map the buffers and calculate how many vertices can they hold
// XXX: We currently limit to 1024, or things can get significantly slow.
unsigned numVertices = 16*1024;
for (GLint slot = 0; slot < transform_feedback_varyings; ++slot) {
TransformFeedbackAttrib & attrib = attribs[slot];
attrib.map = NULL;
if (slot == 0 || buffer_mode != GL_INTERLEAVED_ATTRIBS) {
GLint tbo = 0;
glGetIntegeri_v(GL_TRANSFORM_FEEDBACK_BUFFER_BINDING, slot, &tbo);
if (!tbo) {
numVertices = 0;
continue;
}
GLint start = 0;
glGetIntegeri_v(GL_TRANSFORM_FEEDBACK_BUFFER_START, slot, &start);
GLint size = 0;
glGetIntegeri_v(GL_TRANSFORM_FEEDBACK_BUFFER_SIZE, slot, &size);
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, tbo);
if (size == 0) {
glGetBufferParameteriv(GL_TRANSFORM_FEEDBACK_BUFFER, GL_BUFFER_SIZE, &size);
assert(size >= start);
size -= start;
}
unsigned numAttribVertices = calcNumElements(size,
attrib.offset,
attrib.size,
attrib.stride);
numVertices = std::min(numVertices, numAttribVertices);
attrib.map = (const GLbyte *)glMapBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, GL_READ_ONLY) + start;
} else {
attrib.map = attribs[0].map;
//.........这里部分代码省略.........