void OsmAnd::AtlasMapRendererDebugStage_OpenGL::initializeRects2D()
{
const auto gpuAPI = getGPUAPI();
GL_CHECK_PRESENT(glGenBuffers);
GL_CHECK_PRESENT(glBindBuffer);
GL_CHECK_PRESENT(glBufferData);
GL_CHECK_PRESENT(glEnableVertexAttribArray);
GL_CHECK_PRESENT(glVertexAttribPointer);
// Compile vertex shader
const QString vertexShader = QLatin1String(
// Input data
"INPUT vec2 in_vs_vertexPosition; ""\n"
" ""\n"
// Parameters: common data
"uniform mat4 param_vs_mProjectionViewModel; ""\n"
"uniform vec4 param_vs_rect; ""\n"
"uniform float param_vs_angle; ""\n"
" ""\n"
"void main() ""\n"
"{ ""\n"
" vec2 rectCenter = param_vs_rect.yx; ""\n"
" vec2 p = in_vs_vertexPosition*param_vs_rect.wz + rectCenter; ""\n"
" vec4 v; ""\n"
" float cos_a = cos(param_vs_angle); ""\n"
" float sin_a = sin(param_vs_angle); ""\n"
" p -= rectCenter; ""\n"
" v.x = rectCenter.x + p.x*cos_a - p.y*sin_a; ""\n"
" v.y = rectCenter.y + p.x*sin_a + p.y*cos_a; ""\n"
" v.z = -1.0; ""\n"
" v.w = 1.0; ""\n"
" ""\n"
" gl_Position = param_vs_mProjectionViewModel * v; ""\n"
"} ""\n");
auto preprocessedVertexShader = vertexShader;
gpuAPI->preprocessVertexShader(preprocessedVertexShader);
gpuAPI->optimizeVertexShader(preprocessedVertexShader);
const auto vsId = gpuAPI->compileShader(GL_VERTEX_SHADER, qPrintable(preprocessedVertexShader));
assert(vsId != 0);
// Compile fragment shader
const QString fragmentShader = QLatin1String(
// Parameters: common data
"uniform lowp vec4 param_fs_color; ""\n"
" ""\n"
"void main() ""\n"
"{ ""\n"
" FRAGMENT_COLOR_OUTPUT = param_fs_color; ""\n"
"} ""\n");
auto preprocessedFragmentShader = fragmentShader;
QString preprocessedFragmentShader_UnrolledPerLayerProcessingCode;
gpuAPI->preprocessFragmentShader(preprocessedFragmentShader);
gpuAPI->optimizeFragmentShader(preprocessedFragmentShader);
const auto fsId = gpuAPI->compileShader(GL_FRAGMENT_SHADER, qPrintable(preprocessedFragmentShader));
assert(fsId != 0);
// Link everything into program object
GLuint shaders[] = { vsId, fsId };
_programRect2D.id = gpuAPI->linkProgram(2, shaders);
assert(_programRect2D.id);
const auto& lookup = gpuAPI->obtainVariablesLookupContext(_programRect2D.id);
lookup->lookupLocation(_programRect2D.vs.in.vertexPosition, "in_vs_vertexPosition", GLShaderVariableType::In);
lookup->lookupLocation(_programRect2D.vs.param.mProjectionViewModel, "param_vs_mProjectionViewModel", GLShaderVariableType::Uniform);
lookup->lookupLocation(_programRect2D.vs.param.rect, "param_vs_rect", GLShaderVariableType::Uniform);
lookup->lookupLocation(_programRect2D.vs.param.angle, "param_vs_angle", GLShaderVariableType::Uniform);
lookup->lookupLocation(_programRect2D.fs.param.color, "param_fs_color", GLShaderVariableType::Uniform);
// Vertex data (x,y)
float vertices[4][2] =
{
{ -0.5f, -0.5f },
{ -0.5f, 0.5f },
{ 0.5f, 0.5f },
{ 0.5f, -0.5f }
};
const auto verticesCount = 4;
// Index data
GLushort indices[6] =
{
0, 1, 2,
0, 2, 3
};
const auto indicesCount = 6;
// Create Vertex Array Object
gpuAPI->glGenVertexArrays_wrapper(1, &_vaoRect2D);
GL_CHECK_RESULT;
gpuAPI->glBindVertexArray_wrapper(_vaoRect2D);
GL_CHECK_RESULT;
// Create vertex buffer and associate it with VAO
glGenBuffers(1, &_vboRect2D);
GL_CHECK_RESULT;
glBindBuffer(GL_ARRAY_BUFFER, _vboRect2D);
GL_CHECK_RESULT;
glBufferData(GL_ARRAY_BUFFER, verticesCount * sizeof(float)* 2, vertices, GL_STATIC_DRAW);
GL_CHECK_RESULT;
glEnableVertexAttribArray(*_programRect2D.vs.in.vertexPosition);
GL_CHECK_RESULT;
glVertexAttribPointer(*_programRect2D.vs.in.vertexPosition, 2, GL_FLOAT, GL_FALSE, sizeof(float)* 2, nullptr);
GL_CHECK_RESULT;
// Create index buffer and associate it with VAO
glGenBuffers(1, &_iboRect2D);
GL_CHECK_RESULT;
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _iboRect2D);
GL_CHECK_RESULT;
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indicesCount * sizeof(GLushort), indices, GL_STATIC_DRAW);
GL_CHECK_RESULT;
gpuAPI->glBindVertexArray_wrapper(0);
GL_CHECK_RESULT;
}
void OsmAnd::AtlasMapRendererDebugStage_OpenGL::initializeQuads3D()
{
const auto gpuAPI = getGPUAPI();
GL_CHECK_PRESENT(glGenBuffers);
GL_CHECK_PRESENT(glBindBuffer);
GL_CHECK_PRESENT(glBufferData);
GL_CHECK_PRESENT(glEnableVertexAttribArray);
GL_CHECK_PRESENT(glVertexAttribPointer);
// Compile vertex shader
const QString vertexShader = QLatin1String(
// Input data
// (1.0, 0.0, 0.0, 0.0) for first point
// (0.0, 1.0, 0.0, 0.0) for second point
// (0.0, 0.0, 1.0, 0.0) for third point
// (0.0, 0.0, 0.0, 1.0) for fourth point
"INPUT vec4 in_vs_vertexPosition; ""\n"
" ""\n"
// Parameters: common data
"uniform mat4 param_vs_mProjectionViewModel; ""\n"
"uniform vec4 param_vs_v0; ""\n"
"uniform vec4 param_vs_v1; ""\n"
"uniform vec4 param_vs_v2; ""\n"
"uniform vec4 param_vs_v3; ""\n"
" ""\n"
"void main() ""\n"
"{ ""\n"
" vec4 v = ""\n"
" in_vs_vertexPosition.x*param_vs_v0 + ""\n"
" in_vs_vertexPosition.y*param_vs_v1 + ""\n"
" in_vs_vertexPosition.z*param_vs_v2 + ""\n"
" in_vs_vertexPosition.w*param_vs_v3; ""\n"
" ""\n"
" gl_Position = param_vs_mProjectionViewModel * v; ""\n"
"} ""\n");
auto preprocessedVertexShader = vertexShader;
gpuAPI->preprocessVertexShader(preprocessedVertexShader);
gpuAPI->optimizeVertexShader(preprocessedVertexShader);
const auto vsId = gpuAPI->compileShader(GL_VERTEX_SHADER, qPrintable(preprocessedVertexShader));
assert(vsId != 0);
// Compile fragment shader
const QString fragmentShader = QLatin1String(
// Parameters: common data
"uniform lowp vec4 param_fs_color; ""\n"
" ""\n"
"void main() ""\n"
"{ ""\n"
" FRAGMENT_COLOR_OUTPUT = param_fs_color; ""\n"
"} ""\n");
auto preprocessedFragmentShader = fragmentShader;
QString preprocessedFragmentShader_UnrolledPerLayerProcessingCode;
gpuAPI->preprocessFragmentShader(preprocessedFragmentShader);
gpuAPI->optimizeFragmentShader(preprocessedFragmentShader);
const auto fsId = gpuAPI->compileShader(GL_FRAGMENT_SHADER, qPrintable(preprocessedFragmentShader));
assert(fsId != 0);
// Link everything into program object
GLuint shaders[] = { vsId, fsId };
_programQuad3D.id = gpuAPI->linkProgram(2, shaders);
assert(_programQuad3D.id);
const auto& lookup = gpuAPI->obtainVariablesLookupContext(_programQuad3D.id);
lookup->lookupLocation(_programQuad3D.vs.in.vertexPosition, "in_vs_vertexPosition", GLShaderVariableType::In);
lookup->lookupLocation(_programQuad3D.vs.param.mProjectionViewModel, "param_vs_mProjectionViewModel", GLShaderVariableType::Uniform);
lookup->lookupLocation(_programQuad3D.vs.param.v0, "param_vs_v0", GLShaderVariableType::Uniform);
lookup->lookupLocation(_programQuad3D.vs.param.v1, "param_vs_v1", GLShaderVariableType::Uniform);
lookup->lookupLocation(_programQuad3D.vs.param.v2, "param_vs_v2", GLShaderVariableType::Uniform);
lookup->lookupLocation(_programQuad3D.vs.param.v3, "param_vs_v3", GLShaderVariableType::Uniform);
lookup->lookupLocation(_programQuad3D.fs.param.color, "param_fs_color", GLShaderVariableType::Uniform);
// Vertex data (x,y,z,w)
float vertices[4][4] =
{
{ 1.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 1.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 1.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 1.0f }
};
const auto verticesCount = 4;
// Index data
GLushort indices[6] =
{
0, 1, 2,
0, 2, 3
};
const auto indicesCount = 6;
// Create Vertex Array Object
gpuAPI->glGenVertexArrays_wrapper(1, &_vaoQuad3D);
GL_CHECK_RESULT;
gpuAPI->glBindVertexArray_wrapper(_vaoQuad3D);
GL_CHECK_RESULT;
// Create vertex buffer and associate it with VAO
glGenBuffers(1, &_vboQuad3D);
GL_CHECK_RESULT;
glBindBuffer(GL_ARRAY_BUFFER, _vboQuad3D);
GL_CHECK_RESULT;
glBufferData(GL_ARRAY_BUFFER, verticesCount * sizeof(float)*4, vertices, GL_STATIC_DRAW);
GL_CHECK_RESULT;
glEnableVertexAttribArray(*_programQuad3D.vs.in.vertexPosition);
GL_CHECK_RESULT;
glVertexAttribPointer(*_programQuad3D.vs.in.vertexPosition, 4, GL_FLOAT, GL_FALSE, sizeof(float)*4, nullptr);
GL_CHECK_RESULT;
// Create index buffer and associate it with VAO
glGenBuffers(1, &_iboQuad3D);
GL_CHECK_RESULT;
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _iboQuad3D);
GL_CHECK_RESULT;
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indicesCount * sizeof(GLushort), indices, GL_STATIC_DRAW);
GL_CHECK_RESULT;
gpuAPI->glBindVertexArray_wrapper(0);
GL_CHECK_RESULT;
}
bool OsmAnd::AtlasMapRendererDebugStage_OpenGL::initializeLines3D()
{
const auto gpuAPI = getGPUAPI();
GL_CHECK_PRESENT(glGenBuffers);
GL_CHECK_PRESENT(glBindBuffer);
GL_CHECK_PRESENT(glBufferData);
GL_CHECK_PRESENT(glEnableVertexAttribArray);
GL_CHECK_PRESENT(glVertexAttribPointer);
GL_CHECK_PRESENT(glDeleteShader);
GL_CHECK_PRESENT(glDeleteProgram);
// Compile vertex shader
const QString vertexShader = QLatin1String(
// Input data
"INPUT vec2 in_vs_vertexPosition; // (1.0, 0.0) for first point, (0.0, 1.0) for second ""\n"
" ""\n"
// Parameters: common data
"uniform mat4 param_vs_mProjectionViewModel; ""\n"
"uniform vec4 param_vs_v0; ""\n"
"uniform vec4 param_vs_v1; ""\n"
" ""\n"
"void main() ""\n"
"{ ""\n"
" vec4 v; ""\n"
" v = in_vs_vertexPosition.x*param_vs_v0 + in_vs_vertexPosition.y*param_vs_v1; ""\n"
" ""\n"
" gl_Position = param_vs_mProjectionViewModel * v; ""\n"
"} ""\n");
auto preprocessedVertexShader = vertexShader;
gpuAPI->preprocessVertexShader(preprocessedVertexShader);
gpuAPI->optimizeVertexShader(preprocessedVertexShader);
const auto vsId = gpuAPI->compileShader(GL_VERTEX_SHADER, qPrintable(preprocessedVertexShader));
if (vsId == 0)
{
LogPrintf(LogSeverityLevel::Error,
"Failed to compile AtlasMapRendererDebugStage_OpenGL vertex shader");
return false;
}
// Compile fragment shader
const QString fragmentShader = QLatin1String(
// Parameters: common data
"uniform lowp vec4 param_fs_color; ""\n"
" ""\n"
"void main() ""\n"
"{ ""\n"
" FRAGMENT_COLOR_OUTPUT = param_fs_color; ""\n"
"} ""\n");
auto preprocessedFragmentShader = fragmentShader;
QString preprocessedFragmentShader_UnrolledPerLayerProcessingCode;
gpuAPI->preprocessFragmentShader(preprocessedFragmentShader);
gpuAPI->optimizeFragmentShader(preprocessedFragmentShader);
const auto fsId = gpuAPI->compileShader(GL_FRAGMENT_SHADER, qPrintable(preprocessedFragmentShader));
if (fsId == 0)
{
glDeleteShader(vsId);
GL_CHECK_RESULT;
LogPrintf(LogSeverityLevel::Error,
"Failed to compile AtlasMapRendererDebugStage_OpenGL fragment shader");
return false;
}
// Link everything into program object
GLuint shaders[] = { vsId, fsId };
QHash< QString, GPUAPI_OpenGL::GlslProgramVariable > variablesMap;
_programLine3D.id = gpuAPI->linkProgram(2, shaders, true, &variablesMap);
if (!_programLine3D.id.isValid())
{
LogPrintf(LogSeverityLevel::Error,
"Failed to link AtlasMapRendererDebugStage_OpenGL program");
return false;
}
bool ok = true;
const auto& lookup = gpuAPI->obtainVariablesLookupContext(_programLine3D.id, variablesMap);
ok = ok && lookup->lookupLocation(_programLine3D.vs.in.vertexPosition, "in_vs_vertexPosition", GlslVariableType::In);
ok = ok && lookup->lookupLocation(_programLine3D.vs.param.mProjectionViewModel, "param_vs_mProjectionViewModel", GlslVariableType::Uniform);
ok = ok && lookup->lookupLocation(_programLine3D.vs.param.v0, "param_vs_v0", GlslVariableType::Uniform);
ok = ok && lookup->lookupLocation(_programLine3D.vs.param.v1, "param_vs_v1", GlslVariableType::Uniform);
ok = ok && lookup->lookupLocation(_programLine3D.fs.param.color, "param_fs_color", GlslVariableType::Uniform);
if (!ok)
{
glDeleteProgram(_programLine3D.id);
GL_CHECK_RESULT;
_programLine3D.id.reset();
return false;
}
// Vertex data (x,y)
float vertices[2][2] =
{
{ 1.0f, 0.0f },
{ 0.0f, 1.0f }
};
const auto verticesCount = 2;
// Index data
GLushort indices[2] =
{
0, 1
};
const auto indicesCount = 2;
_vaoLine3D = gpuAPI->allocateUninitializedVAO();
// Create vertex buffer and associate it with VAO
glGenBuffers(1, &_vboLine3D);
GL_CHECK_RESULT;
glBindBuffer(GL_ARRAY_BUFFER, _vboLine3D);
GL_CHECK_RESULT;
glBufferData(GL_ARRAY_BUFFER, verticesCount * sizeof(float)* 2, vertices, GL_STATIC_DRAW);
GL_CHECK_RESULT;
glEnableVertexAttribArray(*_programLine3D.vs.in.vertexPosition);
GL_CHECK_RESULT;
glVertexAttribPointer(*_programLine3D.vs.in.vertexPosition, 2, GL_FLOAT, GL_FALSE, sizeof(float)* 2, nullptr);
GL_CHECK_RESULT;
// Create index buffer and associate it with VAO
glGenBuffers(1, &_iboLine3D);
GL_CHECK_RESULT;
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _iboLine3D);
GL_CHECK_RESULT;
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indicesCount * sizeof(GLushort), indices, GL_STATIC_DRAW);
GL_CHECK_RESULT;
gpuAPI->initializeVAO(_vaoLine3D);
glBindBuffer(GL_ARRAY_BUFFER, 0);
GL_CHECK_RESULT;
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
GL_CHECK_RESULT;
return true;
}