File size: 18,236 Bytes
7a0c684 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 |
import struct
from .shader_compiler import ShaderCompiler
from .rasterizer import Rasterizer
class GraphicsAPI:
def __init__(self, driver):
self.driver = driver
self._verify_driver_compatibility()
# Resource tracking
self.buffers = {}
self.textures = {}
self.framebuffers = {}
self.programs = {}
# Current state
self.current_program = None
self.current_framebuffer = None
self.current_texture_units = {}
# Initialize subsystems
self.shader_compiler = ShaderCompiler()
self.rasterizer = Rasterizer(driver)
print("Graphics API initialized.")
def _verify_driver_compatibility(self):
"""Verify driver has required graphics capabilities"""
required_methods = [
'create_buffer',
'create_texture',
'create_framebuffer',
'draw_triangles'
]
missing_methods = [method for method in required_methods
if not hasattr(self.driver, method)]
if missing_methods:
raise RuntimeError(
f"Driver missing required graphics methods: {missing_methods}"
"\nEnsure driver has modern graphics API support."
)
# Verify required enums exist
required_enums = [
'TextureFormat',
'FilterMode',
'WrapMode',
'BufferType',
'MSAASamples'
]
missing_enums = [enum for enum in required_enums
if not hasattr(self.driver, enum)]
if missing_enums:
raise RuntimeError(
f"Driver missing required graphics enums: {missing_enums}"
"\nEnsure driver has modern graphics type support."
)
def create_buffer(self, data, buffer_type="vertex", dynamic=False, map_write=False):
"""
Create a new buffer with data
Args:
data: numpy array or bytes of buffer data
buffer_type: "vertex", "index", "uniform", "storage", or "indirect"
dynamic: Whether buffer will be frequently updated
map_write: Whether buffer should be mappable for CPU writes
"""
if not self.driver.initialized:
raise RuntimeError("Driver not initialized.")
# Convert buffer type string to enum
type_map = {
"vertex": self.driver.BufferType.VERTEX,
"index": self.driver.BufferType.INDEX,
"uniform": self.driver.BufferType.UNIFORM,
"storage": self.driver.BufferType.STORAGE,
"indirect": self.driver.BufferType.INDIRECT
}
if buffer_type not in type_map:
raise ValueError(f"Invalid buffer type: {buffer_type}")
# Create buffer through driver
buffer_id = self.driver.create_buffer(
data=data,
buffer_type=type_map[buffer_type],
dynamic=dynamic,
map_write=map_write
)
# Store additional metadata
self.buffers[buffer_id] = {
"type": buffer_type,
"size": len(data),
"dynamic": dynamic,
"map_write": map_write
}
print(f"Created {buffer_type} buffer with ID {buffer_id}, size {len(data)} bytes.")
return buffer_id
def delete_buffer(self, buffer_id):
if buffer_id in self.buffers:
buffer_info = self.buffers[buffer_id]
self.driver.free_memory(buffer_info["virtual_address"])
del self.buffers[buffer_id]
print(f"Deleted buffer with ID {buffer_id}.")
else:
print(f"Warning: Attempted to delete non-existent buffer with ID {buffer_id}.")
def buffer_data(self, buffer_id, data):
if buffer_id not in self.buffers:
raise ValueError(f"Buffer with ID {buffer_id} not found.")
buffer_info = self.buffers[buffer_id]
if len(data) > buffer_info["size"]:
raise ValueError(f"Data size ({len(data)}) exceeds buffer size ({buffer_info['size']}) for buffer ID {buffer_id}.")
self.driver.write_memory(buffer_info["virtual_address"], data)
print(f"Loaded {len(data)} bytes into buffer ID {buffer_id}.")
def draw_arrays(self, mode, first, count, vertex_buffer,
primitive_restart_index=None, instances=1):
"""
Draw primitives from vertex buffer
Args:
mode: "points", "lines", "triangles", etc
first: First vertex to draw
count: Number of vertices
vertex_buffer: Vertex buffer ID
primitive_restart_index: Index value that restarts primitive
instances: Number of instances to draw
"""
if not self.driver.initialized:
raise RuntimeError("Driver not initialized.")
if not self.current_program:
raise RuntimeError("No shader program in use.")
if not self.current_framebuffer:
raise RuntimeError("No framebuffer bound.")
print(f"Drawing {count} vertices in {mode} mode")
# Draw using driver's optimized path
self.driver.draw_triangles(
vertex_buffer_id=vertex_buffer,
index_buffer_id=None,
framebuffer_id=self.current_framebuffer,
shader_program=self.current_program,
num_vertices=count,
start_vertex=first
)
# Add command to command buffer for replay/debug
self.driver.add_command("draw_arrays",
mode=mode,
first=first,
count=count,
vertex_buffer=vertex_buffer,
primitive_restart_index=primitive_restart_index,
instances=instances
)
def draw_indexed(self, mode, count, vertex_buffer, index_buffer,
index_offset=0, base_vertex=0, instances=1,
primitive_restart_index=None):
"""
Draw indexed primitives
Args:
mode: "points", "lines", "triangles", etc
count: Number of indices
vertex_buffer: Vertex buffer ID
index_buffer: Index buffer ID
index_offset: Starting offset in index buffer
base_vertex: Value added to each index
instances: Number of instances to draw
primitive_restart_index: Index value that restarts primitive
"""
if not self.driver.initialized:
raise RuntimeError("Driver not initialized.")
if not self.current_program:
raise RuntimeError("No shader program in use.")
if not self.current_framebuffer:
raise RuntimeError("No framebuffer bound.")
if index_buffer not in self.buffers or self.buffers[index_buffer]["type"] != "index":
raise ValueError(f"Invalid index buffer ID: {index_buffer}")
print(f"Drawing {count} indices in {mode} mode")
# Draw using driver's optimized path
self.driver.draw_triangles(
vertex_buffer_id=vertex_buffer,
index_buffer_id=index_buffer,
framebuffer_id=self.current_framebuffer,
shader_program=self.current_program,
num_vertices=count,
start_vertex=index_offset
)
# Add command to command buffer
self.driver.add_command("draw_indexed",
mode=mode,
count=count,
vertex_buffer=vertex_buffer,
index_buffer=index_buffer,
index_offset=index_offset,
base_vertex=base_vertex,
instances=instances,
primitive_restart_index=primitive_restart_index
)
def compile_shader(self, shader_source, shader_type="vertex"):
return self.shader_compiler.compile_shader(shader_source, shader_type)
def link_program(self, vertex_shader, fragment_shader):
return self.shader_compiler.link_program(vertex_shader, fragment_shader)
def use_program(self, program):
if not self.shader_compiler.validate_program(program):
raise ValueError("Invalid shader program.")
self.current_program = program
print(f"Using shader program: {program['id']}.")
def create_texture(self, width, height, format="rgba8",
filter="bilinear", wrap="repeat",
generate_mipmaps=True, aniso_level=1):
"""
Create a new texture
Args:
width, height: Texture dimensions
format: "r8", "rgba8", "rgba16f", "rgba32f", etc.
filter: "nearest", "bilinear", "trilinear", "anisotropic"
wrap: "repeat", "clamp", "mirror"
generate_mipmaps: Whether to generate mipmaps
aniso_level: Anisotropic filtering level (1-16)
"""
# Convert string parameters to enums
format_map = {
"r8": self.driver.TextureFormat.R8,
"rg8": self.driver.TextureFormat.RG8,
"rgba8": self.driver.TextureFormat.RGBA8,
"r16f": self.driver.TextureFormat.R16F,
"rgba16f": self.driver.TextureFormat.RGBA16F,
"r32f": self.driver.TextureFormat.R32F,
"rgba32f": self.driver.TextureFormat.RGBA32F,
"bc1": self.driver.TextureFormat.BC1,
"bc3": self.driver.TextureFormat.BC3
}
filter_map = {
"nearest": self.driver.FilterMode.NEAREST,
"bilinear": self.driver.FilterMode.BILINEAR,
"trilinear": self.driver.FilterMode.TRILINEAR,
"anisotropic": self.driver.FilterMode.ANISOTROPIC
}
wrap_map = {
"repeat": self.driver.WrapMode.REPEAT,
"clamp": self.driver.WrapMode.CLAMP,
"mirror": self.driver.WrapMode.MIRROR
}
if format not in format_map:
raise ValueError(f"Invalid texture format: {format}")
if filter not in filter_map:
raise ValueError(f"Invalid filter mode: {filter}")
if wrap not in wrap_map:
raise ValueError(f"Invalid wrap mode: {wrap}")
texture_id = self.driver.create_texture(
width=width,
height=height,
format=format_map[format],
filter_mode=filter_map[filter],
wrap_mode=wrap_map[wrap],
generate_mipmaps=generate_mipmaps,
aniso_level=aniso_level
)
print(f"Created texture with ID {texture_id}, format {format}, size {width}x{height}")
return texture_id
def create_framebuffer(self, width, height, color_formats=None,
depth_format=None, stencil_format=None,
samples=1):
"""
Create a new framebuffer
Args:
width, height: Framebuffer dimensions
color_formats: List of formats for color attachments
depth_format: Format for depth attachment (None to disable)
stencil_format: Format for stencil attachment (None to disable)
samples: MSAA sample count (1, 2, 4, or 8)
"""
# Default color format if none specified
if color_formats is None:
color_formats = ["rgba8"]
# Convert format strings to enums
format_map = {
"r8": self.driver.TextureFormat.R8,
"rgba8": self.driver.TextureFormat.RGBA8,
"rgba16f": self.driver.TextureFormat.RGBA16F,
"r32f": self.driver.TextureFormat.R32F
}
samples_map = {
1: self.driver.MSAASamples.MSAA_1X,
2: self.driver.MSAASamples.MSAA_2X,
4: self.driver.MSAASamples.MSAA_4X,
8: self.driver.MSAASamples.MSAA_8X
}
# Convert formats to enums
color_format_enums = []
for fmt in color_formats:
if fmt not in format_map:
raise ValueError(f"Invalid color format: {fmt}")
color_format_enums.append(format_map[fmt])
depth_format_enum = None
if depth_format:
if depth_format not in format_map:
raise ValueError(f"Invalid depth format: {depth_format}")
depth_format_enum = format_map[depth_format]
stencil_format_enum = None
if stencil_format:
if stencil_format not in format_map:
raise ValueError(f"Invalid stencil format: {stencil_format}")
stencil_format_enum = format_map[stencil_format]
if samples not in samples_map:
raise ValueError(f"Invalid sample count: {samples}")
# Create framebuffer through driver
fb_id = self.driver.create_framebuffer(
width=width,
height=height,
color_formats=color_format_enums,
depth_format=depth_format_enum,
stencil_format=stencil_format_enum,
samples=samples_map[samples]
)
# Store framebuffer info
self.framebuffers[fb_id] = {
"width": width,
"height": height,
"color_formats": color_formats,
"depth_format": depth_format,
"stencil_format": stencil_format,
"samples": samples
}
print(f"Created framebuffer with ID {fb_id}, size {width}x{height}, {samples}x MSAA")
return fb_id
def bind_framebuffer(self, fb_id):
"""Bind framebuffer for rendering"""
if fb_id not in self.framebuffers:
raise ValueError(f"Invalid framebuffer ID: {fb_id}")
self.current_framebuffer = fb_id
fb_info = self.framebuffers[fb_id]
print(f"Binding framebuffer {fb_id} ({fb_info['width']}x{fb_info['height']})")
def bind_texture(self, texture_id, unit=0):
"""Bind texture to a texture unit"""
if texture_id not in self.textures:
raise ValueError(f"Invalid texture ID: {texture_id}")
self.current_texture_units[unit] = texture_id
print(f"Binding texture {texture_id} to unit {unit}")
def set_viewport(self, x, y, width, height):
"""Set viewport for rendering"""
if not self.current_framebuffer:
raise RuntimeError("No framebuffer bound")
fb_info = self.framebuffers[self.current_framebuffer]
if x + width > fb_info['width'] or y + height > fb_info['height']:
raise ValueError("Viewport exceeds framebuffer dimensions")
self.current_viewport = {
'x': x, 'y': y,
'width': width, 'height': height
}
def clear(self, color=None, depth=None, stencil=None):
"""Clear current framebuffer attachments"""
if not self.current_framebuffer:
raise RuntimeError("No framebuffer bound")
fb_id = self.current_framebuffer
fb = self.framebuffers[fb_id]
# Get framebuffer from driver
driver_fb = self.driver.framebuffer_manager[fb_id]
if color is not None:
r, g, b, a = color
driver_fb.set_clear_values(color=[r, g, b, a])
if depth is not None:
driver_fb.set_clear_values(depth=depth)
if stencil is not None:
driver_fb.set_clear_values(stencil=stencil)
# Perform clear
driver_fb.clear(
color=color is not None,
depth=depth is not None,
stencil=stencil is not None
)
print(f"Cleared framebuffer {fb_id}")
def set_blend_state(self, enable=True,
src_factor="src_alpha",
dst_factor="one_minus_src_alpha",
blend_op="add"):
"""Set blending state"""
if not self.current_framebuffer:
raise RuntimeError("No framebuffer bound")
# Convert string parameters to driver enums
factor_map = {
"zero": self.driver.BlendMode.ZERO,
"one": self.driver.BlendMode.ONE,
"src_color": self.driver.BlendMode.SRC_COLOR,
"one_minus_src_color": self.driver.BlendMode.ONE_MINUS_SRC_COLOR,
"dst_color": self.driver.BlendMode.DST_COLOR,
"one_minus_dst_color": self.driver.BlendMode.ONE_MINUS_DST_COLOR,
"src_alpha": self.driver.BlendMode.SRC_ALPHA,
"one_minus_src_alpha": self.driver.BlendMode.ONE_MINUS_SRC_ALPHA,
"dst_alpha": self.driver.BlendMode.DST_ALPHA,
"one_minus_dst_alpha": self.driver.BlendMode.ONE_MINUS_DST_ALPHA
}
op_map = {
"add": self.driver.BlendOp.ADD,
"subtract": self.driver.BlendOp.SUBTRACT,
"reverse_subtract": self.driver.BlendOp.REVERSE_SUBTRACT,
"min": self.driver.BlendOp.MIN,
"max": self.driver.BlendOp.MAX
}
if src_factor not in factor_map:
raise ValueError(f"Invalid source blend factor: {src_factor}")
if dst_factor not in factor_map:
raise ValueError(f"Invalid destination blend factor: {dst_factor}")
if blend_op not in op_map:
raise ValueError(f"Invalid blend operation: {blend_op}")
fb_id = self.current_framebuffer
driver_fb = self.driver.framebuffer_manager[fb_id]
# Store blend state
self.blend_state = {
'enable': enable,
'src_factor': factor_map[src_factor],
'dst_factor': factor_map[dst_factor],
'blend_op': op_map[blend_op]
}
print(f"Set blend state: {enable}, {src_factor}, {dst_factor}, {blend_op}")
|