static already_AddRefed<const webgl::LinkedProgramInfo>
QueryProgramInfo(WebGLProgram* prog, gl::GLContext* gl)
{
RefPtr<webgl::LinkedProgramInfo> info(new webgl::LinkedProgramInfo(prog));
GLuint maxAttribLenWithNull = 0;
gl->fGetProgramiv(prog->mGLName, LOCAL_GL_ACTIVE_ATTRIBUTE_MAX_LENGTH,
(GLint*)&maxAttribLenWithNull);
if (maxAttribLenWithNull < 1)
maxAttribLenWithNull = 1;
GLuint maxUniformLenWithNull = 0;
gl->fGetProgramiv(prog->mGLName, LOCAL_GL_ACTIVE_UNIFORM_MAX_LENGTH,
(GLint*)&maxUniformLenWithNull);
if (maxUniformLenWithNull < 1)
maxUniformLenWithNull = 1;
GLuint maxUniformBlockLenWithNull = 0;
if (gl->IsSupported(gl::GLFeature::uniform_buffer_object)) {
gl->fGetProgramiv(prog->mGLName, LOCAL_GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH,
(GLint*)&maxUniformBlockLenWithNull);
if (maxUniformBlockLenWithNull < 1)
maxUniformBlockLenWithNull = 1;
}
GLuint maxTransformFeedbackVaryingLenWithNull = 0;
if (gl->IsSupported(gl::GLFeature::transform_feedback2)) {
gl->fGetProgramiv(prog->mGLName, LOCAL_GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH,
(GLint*)&maxTransformFeedbackVaryingLenWithNull);
if (maxTransformFeedbackVaryingLenWithNull < 1)
maxTransformFeedbackVaryingLenWithNull = 1;
}
#ifdef DUMP_SHADERVAR_MAPPINGS
printf_stderr("maxAttribLenWithNull: %d\n", maxAttribLenWithNull);
printf_stderr("maxUniformLenWithNull: %d\n", maxUniformLenWithNull);
printf_stderr("maxUniformBlockLenWithNull: %d\n", maxUniformBlockLenWithNull);
#endif
// Attribs
GLuint numActiveAttribs = 0;
gl->fGetProgramiv(prog->mGLName, LOCAL_GL_ACTIVE_ATTRIBUTES,
(GLint*)&numActiveAttribs);
for (GLuint i = 0; i < numActiveAttribs; i++) {
nsAutoCString mappedName;
mappedName.SetLength(maxAttribLenWithNull - 1);
GLsizei lengthWithoutNull = 0;
GLint elemCount = 0; // `size`
GLenum elemType = 0; // `type`
gl->fGetActiveAttrib(prog->mGLName, i, mappedName.Length()+1, &lengthWithoutNull,
&elemCount, &elemType, mappedName.BeginWriting());
mappedName.SetLength(lengthWithoutNull);
// Collect ActiveInfos:
// Attribs can't be arrays, so we can skip some of the mess we have in the Uniform
// path.
nsDependentCString userName;
if (!prog->FindAttribUserNameByMappedName(mappedName, &userName))
userName.Rebind(mappedName, 0);
#ifdef DUMP_SHADERVAR_MAPPINGS
printf_stderr("[attrib %i] %s/%s\n", i, mappedName.BeginReading(),
userName.BeginReading());
printf_stderr(" lengthWithoutNull: %d\n", lengthWithoutNull);
#endif
const bool isArray = false;
AddActiveInfo(prog->mContext, elemCount, elemType, isArray, userName, mappedName,
&info->activeAttribs, &info->attribMap);
// Collect active locations:
GLint loc = gl->fGetAttribLocation(prog->mGLName, mappedName.BeginReading());
if (loc == -1) {
if (mappedName != "gl_InstanceID")
MOZ_CRASH("Active attrib has no location.");
} else {
info->activeAttribLocs.insert(loc);
}
}
// Uniforms
const bool needsCheckForArrays = gl->WorkAroundDriverBugs();
GLuint numActiveUniforms = 0;
gl->fGetProgramiv(prog->mGLName, LOCAL_GL_ACTIVE_UNIFORMS,
(GLint*)&numActiveUniforms);
for (GLuint i = 0; i < numActiveUniforms; i++) {
nsAutoCString mappedName;
mappedName.SetLength(maxUniformLenWithNull - 1);
GLsizei lengthWithoutNull = 0;
GLint elemCount = 0; // `size`
GLenum elemType = 0; // `type`
gl->fGetActiveUniform(prog->mGLName, i, mappedName.Length()+1, &lengthWithoutNull,
&elemCount, &elemType, mappedName.BeginWriting());
mappedName.SetLength(lengthWithoutNull);
nsAutoCString baseMappedName;
bool isArray;
size_t arrayIndex;
if (!ParseName(mappedName, &baseMappedName, &isArray, &arrayIndex))
MOZ_CRASH("Failed to parse `mappedName` received from driver.");
// Note that for good drivers, `isArray` should already be correct.
// However, if FindUniform succeeds, it will be validator-guaranteed correct.
nsAutoCString baseUserName;
if (!prog->FindUniformByMappedName(baseMappedName, &baseUserName, &isArray)) {
baseUserName = baseMappedName;
if (needsCheckForArrays && !isArray) {
// By GLES 3, GetUniformLocation("foo[0]") should return -1 if `foo` is
// not an array. Our current linux Try slaves return the location of `foo`
// anyways, though.
std::string mappedNameStr = baseMappedName.BeginReading();
mappedNameStr += "[0]";
GLint loc = gl->fGetUniformLocation(prog->mGLName, mappedNameStr.c_str());
if (loc != -1)
isArray = true;
}
}
#ifdef DUMP_SHADERVAR_MAPPINGS
printf_stderr("[uniform %i] %s/%i/%s/%s\n", i, mappedName.BeginReading(),
(int)isArray, baseMappedName.BeginReading(),
baseUserName.BeginReading());
printf_stderr(" lengthWithoutNull: %d\n", lengthWithoutNull);
printf_stderr(" isArray: %d\n", (int)isArray);
#endif
AddActiveInfo(prog->mContext, elemCount, elemType, isArray, baseUserName,
baseMappedName, &info->activeUniforms, &info->uniformMap);
}
// Uniform Blocks
if (gl->IsSupported(gl::GLFeature::uniform_buffer_object)) {
GLuint numActiveUniformBlocks = 0;
gl->fGetProgramiv(prog->mGLName, LOCAL_GL_ACTIVE_UNIFORM_BLOCKS,
(GLint*)&numActiveUniformBlocks);
for (GLuint i = 0; i < numActiveUniformBlocks; i++) {
nsAutoCString mappedName;
mappedName.SetLength(maxUniformBlockLenWithNull - 1);
GLint lengthWithoutNull;
gl->fGetActiveUniformBlockiv(prog->mGLName, i, LOCAL_GL_UNIFORM_BLOCK_NAME_LENGTH, &lengthWithoutNull);
gl->fGetActiveUniformBlockName(prog->mGLName, i, maxUniformBlockLenWithNull, &lengthWithoutNull, mappedName.BeginWriting());
mappedName.SetLength(lengthWithoutNull);
nsAutoCString baseMappedName;
bool isArray;
size_t arrayIndex;
if (!ParseName(mappedName, &baseMappedName, &isArray, &arrayIndex))
MOZ_CRASH("Failed to parse `mappedName` received from driver.");
nsAutoCString baseUserName;
if (!prog->FindUniformBlockByMappedName(baseMappedName, &baseUserName,
&isArray))
{
baseUserName = baseMappedName;
if (needsCheckForArrays && !isArray) {
std::string mappedNameStr = baseMappedName.BeginReading();
mappedNameStr += "[0]";
GLuint loc = gl->fGetUniformBlockIndex(prog->mGLName,
mappedNameStr.c_str());
if (loc != LOCAL_GL_INVALID_INDEX)
isArray = true;
}
}
#ifdef DUMP_SHADERVAR_MAPPINGS
printf_stderr("[uniform block %i] %s/%i/%s/%s\n", i, mappedName.BeginReading(),
(int)isArray, baseMappedName.BeginReading(),
baseUserName.BeginReading());
printf_stderr(" lengthWithoutNull: %d\n", lengthWithoutNull);
printf_stderr(" isArray: %d\n", (int)isArray);
#endif
AddActiveBlockInfo(baseUserName, baseMappedName, &info->uniformBlocks);
}
}
// Transform feedback varyings
if (gl->IsSupported(gl::GLFeature::transform_feedback2)) {
GLuint numTransformFeedbackVaryings = 0;
gl->fGetProgramiv(prog->mGLName, LOCAL_GL_TRANSFORM_FEEDBACK_VARYINGS,
(GLint*)&numTransformFeedbackVaryings);
for (GLuint i = 0; i < numTransformFeedbackVaryings; i++) {
nsAutoCString mappedName;
mappedName.SetLength(maxTransformFeedbackVaryingLenWithNull - 1);
GLint lengthWithoutNull;
GLsizei size;
GLenum type;
gl->fGetTransformFeedbackVarying(prog->mGLName, i, maxTransformFeedbackVaryingLenWithNull,
&lengthWithoutNull, &size, &type,
mappedName.BeginWriting());
mappedName.SetLength(lengthWithoutNull);
nsAutoCString baseMappedName;
bool isArray;
size_t arrayIndex;
if (!ParseName(mappedName, &baseMappedName, &isArray, &arrayIndex))
MOZ_CRASH("Failed to parse `mappedName` received from driver.");
nsAutoCString baseUserName;
if (!prog->FindVaryingByMappedName(mappedName, &baseUserName, &isArray)) {
baseUserName = baseMappedName;
if (needsCheckForArrays && !isArray) {
std::string mappedNameStr = baseMappedName.BeginReading();
mappedNameStr += "[0]";
GLuint loc = gl->fGetUniformBlockIndex(prog->mGLName,
mappedNameStr.c_str());
if (loc != LOCAL_GL_INVALID_INDEX)
isArray = true;
}
}
AddActiveInfo(prog->mContext, size, type, isArray, baseUserName, mappedName,
&info->transformFeedbackVaryings,
&info->transformFeedbackVaryingsMap);
}
}
return info.forget();
}
static TemporaryRef<const webgl::LinkedProgramInfo>
QueryProgramInfo(WebGLProgram* prog, gl::GLContext* gl)
{
RefPtr<webgl::LinkedProgramInfo> info(new webgl::LinkedProgramInfo(prog));
GLuint maxAttribLenWithNull = 0;
gl->fGetProgramiv(prog->mGLName, LOCAL_GL_ACTIVE_ATTRIBUTE_MAX_LENGTH,
(GLint*)&maxAttribLenWithNull);
if (maxAttribLenWithNull < 1)
maxAttribLenWithNull = 1;
GLuint maxUniformLenWithNull = 0;
gl->fGetProgramiv(prog->mGLName, LOCAL_GL_ACTIVE_UNIFORM_MAX_LENGTH,
(GLint*)&maxUniformLenWithNull);
if (maxUniformLenWithNull < 1)
maxUniformLenWithNull = 1;
#ifdef DUMP_SHADERVAR_MAPPINGS
printf_stderr("maxAttribLenWithNull: %d\n", maxAttribLenWithNull);
printf_stderr("maxUniformLenWithNull: %d\n", maxUniformLenWithNull);
#endif
// Attribs
GLuint numActiveAttribs = 0;
gl->fGetProgramiv(prog->mGLName, LOCAL_GL_ACTIVE_ATTRIBUTES,
(GLint*)&numActiveAttribs);
for (GLuint i = 0; i < numActiveAttribs; i++) {
nsAutoCString mappedName;
mappedName.SetLength(maxAttribLenWithNull - 1);
GLsizei lengthWithoutNull = 0;
GLint elemCount = 0; // `size`
GLenum elemType = 0; // `type`
gl->fGetActiveAttrib(prog->mGLName, i, mappedName.Length()+1, &lengthWithoutNull,
&elemCount, &elemType, mappedName.BeginWriting());
mappedName.SetLength(lengthWithoutNull);
// Collect ActiveInfos:
// Attribs can't be arrays, so we can skip some of the mess we have in the Uniform
// path.
nsDependentCString userName;
if (!prog->FindAttribUserNameByMappedName(mappedName, &userName))
userName.Rebind(mappedName, 0);
#ifdef DUMP_SHADERVAR_MAPPINGS
printf_stderr("[attrib %i] %s/%s\n", i, mappedName.BeginReading(),
userName.BeginReading());
printf_stderr(" lengthWithoutNull: %d\n", lengthWithoutNull);
#endif
const bool isArray = false;
AddActiveInfo(prog->Context(), elemCount, elemType, isArray, userName, mappedName,
&info->activeAttribs, &info->attribMap);
// Collect active locations:
GLint loc = gl->fGetAttribLocation(prog->mGLName, mappedName.BeginReading());
if (loc == -1)
MOZ_CRASH("Active attrib has no location.");
info->activeAttribLocs.insert(loc);
}
// Uniforms
const bool needsCheckForArrays = true;
GLuint numActiveUniforms = 0;
gl->fGetProgramiv(prog->mGLName, LOCAL_GL_ACTIVE_UNIFORMS,
(GLint*)&numActiveUniforms);
for (GLuint i = 0; i < numActiveUniforms; i++) {
nsAutoCString mappedName;
mappedName.SetLength(maxUniformLenWithNull - 1);
GLsizei lengthWithoutNull = 0;
GLint elemCount = 0; // `size`
GLenum elemType = 0; // `type`
gl->fGetActiveUniform(prog->mGLName, i, mappedName.Length()+1, &lengthWithoutNull,
&elemCount, &elemType, mappedName.BeginWriting());
mappedName.SetLength(lengthWithoutNull);
nsAutoCString baseMappedName;
bool isArray;
size_t arrayIndex;
if (!ParseName(mappedName, &baseMappedName, &isArray, &arrayIndex))
MOZ_CRASH("Failed to parse `mappedName` received from driver.");
// Note that for good drivers, `isArray` should already be correct.
// However, if FindUniform succeeds, it will be validator-guaranteed correct.
nsAutoCString baseUserName;
if (!prog->FindUniformByMappedName(baseMappedName, &baseUserName, &isArray)) {
baseUserName = baseMappedName;
if (needsCheckForArrays && !isArray) {
// By GLES 3, GetUniformLocation("foo[0]") should return -1 if `foo` is
// not an array. Our current linux Try slaves return the location of `foo`
// anyways, though.
std::string mappedName = baseMappedName.BeginReading();
mappedName += "[0]";
GLint loc = gl->fGetUniformLocation(prog->mGLName, mappedName.c_str());
if (loc != -1)
isArray = true;
}
}
#ifdef DUMP_SHADERVAR_MAPPINGS
printf_stderr("[uniform %i] %s/%i/%s/%s\n", i, mappedName.BeginReading(),
(int)isArray, baseMappedName.BeginReading(),
baseUserName.BeginReading());
printf_stderr(" lengthWithoutNull: %d\n", lengthWithoutNull);
printf_stderr(" isArray: %d\n", (int)isArray);
#endif
AddActiveInfo(prog->Context(), elemCount, elemType, isArray, baseUserName,
baseMappedName, &info->activeUniforms, &info->uniformMap);
}
return info.forget();
}
