OutputVertex RunShader(const InputVertex& input, int num_attributes)
{
VertexShaderState state;
const u32* main = &shader_memory[registers.vs_main_offset];
state.program_counter = (u32*)main;
state.debug.max_offset = 0;
state.debug.max_opdesc_id = 0;
// Setup input register table
const auto& attribute_register_map = registers.vs_input_register_map;
float24 dummy_register;
std::fill(&state.input_register_table[0], &state.input_register_table[16], &dummy_register);
if(num_attributes > 0) state.input_register_table[attribute_register_map.attribute0_register] = &input.attr[0].x;
if(num_attributes > 1) state.input_register_table[attribute_register_map.attribute1_register] = &input.attr[1].x;
if(num_attributes > 2) state.input_register_table[attribute_register_map.attribute2_register] = &input.attr[2].x;
if(num_attributes > 3) state.input_register_table[attribute_register_map.attribute3_register] = &input.attr[3].x;
if(num_attributes > 4) state.input_register_table[attribute_register_map.attribute4_register] = &input.attr[4].x;
if(num_attributes > 5) state.input_register_table[attribute_register_map.attribute5_register] = &input.attr[5].x;
if(num_attributes > 6) state.input_register_table[attribute_register_map.attribute6_register] = &input.attr[6].x;
if(num_attributes > 7) state.input_register_table[attribute_register_map.attribute7_register] = &input.attr[7].x;
if(num_attributes > 8) state.input_register_table[attribute_register_map.attribute8_register] = &input.attr[8].x;
if(num_attributes > 9) state.input_register_table[attribute_register_map.attribute9_register] = &input.attr[9].x;
if(num_attributes > 10) state.input_register_table[attribute_register_map.attribute10_register] = &input.attr[10].x;
if(num_attributes > 11) state.input_register_table[attribute_register_map.attribute11_register] = &input.attr[11].x;
if(num_attributes > 12) state.input_register_table[attribute_register_map.attribute12_register] = &input.attr[12].x;
if(num_attributes > 13) state.input_register_table[attribute_register_map.attribute13_register] = &input.attr[13].x;
if(num_attributes > 14) state.input_register_table[attribute_register_map.attribute14_register] = &input.attr[14].x;
if(num_attributes > 15) state.input_register_table[attribute_register_map.attribute15_register] = &input.attr[15].x;
// Setup output register table
OutputVertex ret;
for (int i = 0; i < 7; ++i) {
const auto& output_register_map = registers.vs_output_attributes[i];
u32 semantics[4] = {
output_register_map.map_x, output_register_map.map_y,
output_register_map.map_z, output_register_map.map_w
};
for (int comp = 0; comp < 4; ++comp)
state.output_register_table[4*i+comp] = ((float24*)&ret) + semantics[comp];
}
state.status_registers[0] = false;
state.status_registers[1] = false;
std::fill(state.call_stack, state.call_stack + sizeof(state.call_stack) / sizeof(state.call_stack[0]),
VertexShaderState::INVALID_ADDRESS);
state.call_stack_pointer = &state.call_stack[0];
ProcessShaderCode(state);
DebugUtils::DumpShader(shader_memory, state.debug.max_offset, swizzle_data,
state.debug.max_opdesc_id, registers.vs_main_offset,
registers.vs_output_attributes);
DEBUG_LOG(GPU, "Output vertex: pos (%.2f, %.2f, %.2f, %.2f), col(%.2f, %.2f, %.2f, %.2f), tc0(%.2f, %.2f)",
ret.pos.x.ToFloat32(), ret.pos.y.ToFloat32(), ret.pos.z.ToFloat32(), ret.pos.w.ToFloat32(),
ret.color.x.ToFloat32(), ret.color.y.ToFloat32(), ret.color.z.ToFloat32(), ret.color.w.ToFloat32(),
ret.tc0.u().ToFloat32(), ret.tc0.v().ToFloat32());
return ret;
}
/*
* \brief Load our shaders into our shader object
*/
const bool Shader::Load(
const char *vertexShader, //!< Name of the vertex shader
const char *fragmentShader //!< Name of the fragment shader
)
{
m_vertex_shader = glCreateShader(GL_VERTEX_SHADER);
std::string vertex_shader_string = tyga::stringFromFile(vertexShader);
if (!ProcessShaderCode(vertexShader, vertex_shader_string))
return false;
const char *vertex_shader_code = vertex_shader_string.c_str();
glShaderSource(
m_vertex_shader,
1,
(const GLchar **) &vertex_shader_code,
NULL
);
int compile_status = 0;
glCompileShader(m_vertex_shader);
glGetShaderiv(
m_vertex_shader,
GL_COMPILE_STATUS,
&compile_status
);
if (compile_status != GL_TRUE) {
static const int string_length = 1024;
GLchar log[string_length]= "";
glGetShaderInfoLog(
m_vertex_shader,
string_length,
NULL,
log
);
std::cerr << "Vertex Shader: " << log << std::endl;
return false;
}
m_fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
std::string fragment_shader_string = tyga::stringFromFile(fragmentShader);
if (!ProcessShaderCode(fragmentShader, fragment_shader_string))
return false;
const char *const fragment_shader_code = fragment_shader_string.c_str();
glShaderSource(
m_fragment_shader,
1,
(const GLchar **) &fragment_shader_code,
NULL
);
glCompileShader(m_fragment_shader);
glGetShaderiv(
m_fragment_shader,
GL_COMPILE_STATUS,
&compile_status
);
if (compile_status != GL_TRUE) {
static const int string_length = 1024;
GLchar log[string_length]= "";
glGetShaderInfoLog(
m_fragment_shader,
string_length,
NULL,
log
);
std::cerr << "Fragment Shader: " << log << std::endl;
return false;
}
m_program = glCreateProgram();
return true;
}