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https://github.com/servo/servo.git
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Implement various WebGL functions
This commit is contained in:
David Zbarsky
parent
a1fb12616a
commit
0f4d6d58aa
15 changed files with 530 additions and 190 deletions
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@ -3,7 +3,7 @@
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use canvas_traits::{CanvasCommonMsg, CanvasMsg, CanvasWebGLMsg, FromLayoutMsg, FromPaintMsg};
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use canvas_traits::{WebGLFramebufferBindingRequest, WebGLShaderParameter};
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use canvas_traits::{WebGLError, WebGLFramebufferBindingRequest, WebGLParameter, WebGLResult};
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use core::nonzero::NonZero;
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use euclid::size::Size2D;
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use gleam::gl;
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@ -57,6 +57,10 @@ impl WebGLPaintTask {
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self.context_attributes(sender),
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CanvasWebGLMsg::ActiveTexture(target) =>
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gl::active_texture(target),
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CanvasWebGLMsg::AttachShader(program_id, shader_id) =>
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gl::attach_shader(program_id, shader_id),
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CanvasWebGLMsg::BindAttribLocation(program_id, index, name) =>
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gl::bind_attrib_location(program_id, index, &name),
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CanvasWebGLMsg::BlendColor(r, g, b, a) =>
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gl::blend_color(r, g, b, a),
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CanvasWebGLMsg::BlendEquation(mode) =>
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@ -67,8 +71,6 @@ impl WebGLPaintTask {
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gl::blend_func(src, dest),
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CanvasWebGLMsg::BlendFuncSeparate(src_rgb, dest_rgb, src_alpha, dest_alpha) =>
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gl::blend_func_separate(src_rgb, dest_rgb, src_alpha, dest_alpha),
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CanvasWebGLMsg::AttachShader(program_id, shader_id) =>
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gl::attach_shader(program_id, shader_id),
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CanvasWebGLMsg::BufferData(buffer_type, data, usage) =>
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gl::buffer_data(buffer_type, &data, usage),
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CanvasWebGLMsg::BufferSubData(buffer_type, offset, data) =>
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@ -99,6 +101,8 @@ impl WebGLPaintTask {
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gl::front_face(mode),
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CanvasWebGLMsg::DrawArrays(mode, first, count) =>
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gl::draw_arrays(mode, first, count),
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CanvasWebGLMsg::DrawElements(mode, count, type_, offset) =>
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gl::draw_elements(mode, count, type_, offset as u32),
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CanvasWebGLMsg::Hint(name, val) =>
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gl::hint(name, val),
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CanvasWebGLMsg::LineWidth(width) =>
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@ -111,6 +115,12 @@ impl WebGLPaintTask {
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gl::enable_vertex_attrib_array(attrib_id),
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CanvasWebGLMsg::GetAttribLocation(program_id, name, chan) =>
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self.attrib_location(program_id, name, chan),
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CanvasWebGLMsg::GetBufferParameter(target, param_id, chan) =>
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self.buffer_parameter(target, param_id, chan),
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CanvasWebGLMsg::GetParameter(param_id, chan) =>
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self.parameter(param_id, chan),
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CanvasWebGLMsg::GetProgramParameter(program_id, param_id, chan) =>
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self.program_parameter(program_id, param_id, chan),
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CanvasWebGLMsg::GetShaderParameter(shader_id, param_id, chan) =>
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self.shader_parameter(shader_id, param_id, chan),
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CanvasWebGLMsg::GetUniformLocation(program_id, name, chan) =>
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@ -155,6 +165,8 @@ impl WebGLPaintTask {
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gl::uniform_4f(uniform_id, data[0], data[1], data[2], data[3]),
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CanvasWebGLMsg::UseProgram(program_id) =>
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gl::use_program(program_id),
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CanvasWebGLMsg::VertexAttrib(attrib_id, x, y, z, w) =>
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gl::vertex_attrib_4f(attrib_id, x, y, z, w),
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CanvasWebGLMsg::VertexAttribPointer2f(attrib_id, size, normalized, stride, offset) =>
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gl::vertex_attrib_pointer_f32(attrib_id, size, normalized, stride, offset as u32),
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CanvasWebGLMsg::Viewport(x, y, width, height) =>
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@ -319,16 +331,173 @@ impl WebGLPaintTask {
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chan.send(attrib_location).unwrap();
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}
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fn parameter(&self,
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param_id: u32,
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chan: IpcSender<WebGLResult<WebGLParameter>>) {
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let result = match param_id {
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gl::ACTIVE_TEXTURE |
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gl::ALPHA_BITS |
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gl::BLEND_DST_ALPHA |
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gl::BLEND_DST_RGB |
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gl::BLEND_EQUATION_ALPHA |
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gl::BLEND_EQUATION_RGB |
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gl::BLEND_SRC_ALPHA |
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gl::BLEND_SRC_RGB |
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gl::BLUE_BITS |
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gl::CULL_FACE_MODE |
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gl::DEPTH_BITS |
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gl::DEPTH_FUNC |
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gl::FRONT_FACE |
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gl::GENERATE_MIPMAP_HINT |
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gl::GREEN_BITS |
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//gl::IMPLEMENTATION_COLOR_READ_FORMAT |
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//gl::IMPLEMENTATION_COLOR_READ_TYPE |
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gl::MAX_COMBINED_TEXTURE_IMAGE_UNITS |
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gl::MAX_CUBE_MAP_TEXTURE_SIZE |
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//gl::MAX_FRAGMENT_UNIFORM_VECTORS |
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gl::MAX_RENDERBUFFER_SIZE |
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gl::MAX_TEXTURE_IMAGE_UNITS |
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gl::MAX_TEXTURE_SIZE |
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//gl::MAX_VARYING_VECTORS |
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gl::MAX_VERTEX_ATTRIBS |
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gl::MAX_VERTEX_TEXTURE_IMAGE_UNITS |
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//gl::MAX_VERTEX_UNIFORM_VECTORS |
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gl::PACK_ALIGNMENT |
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gl::RED_BITS |
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gl::SAMPLE_BUFFERS |
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gl::SAMPLES |
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gl::STENCIL_BACK_FAIL |
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gl::STENCIL_BACK_FUNC |
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gl::STENCIL_BACK_PASS_DEPTH_FAIL |
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gl::STENCIL_BACK_PASS_DEPTH_PASS |
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gl::STENCIL_BACK_REF |
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gl::STENCIL_BACK_VALUE_MASK |
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gl::STENCIL_BACK_WRITEMASK |
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gl::STENCIL_BITS |
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gl::STENCIL_CLEAR_VALUE |
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gl::STENCIL_FAIL |
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gl::STENCIL_FUNC |
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gl::STENCIL_PASS_DEPTH_FAIL |
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gl::STENCIL_PASS_DEPTH_PASS |
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gl::STENCIL_REF |
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gl::STENCIL_VALUE_MASK |
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gl::STENCIL_WRITEMASK |
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gl::SUBPIXEL_BITS |
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gl::UNPACK_ALIGNMENT =>
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//gl::UNPACK_COLORSPACE_CONVERSION_WEBGL =>
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Ok(WebGLParameter::Int(gl::get_integer_v(param_id))),
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gl::BLEND |
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gl::CULL_FACE |
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gl::DEPTH_TEST |
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gl::DEPTH_WRITEMASK |
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gl::DITHER |
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gl::POLYGON_OFFSET_FILL |
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gl::SAMPLE_COVERAGE_INVERT |
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gl::STENCIL_TEST =>
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//gl::UNPACK_FLIP_Y_WEBGL |
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//gl::UNPACK_PREMULTIPLY_ALPHA_WEBGL =>
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Ok(WebGLParameter::Bool(gl::get_boolean_v(param_id) != 0)),
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gl::DEPTH_CLEAR_VALUE |
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gl::LINE_WIDTH |
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gl::POLYGON_OFFSET_FACTOR |
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gl::POLYGON_OFFSET_UNITS |
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gl::SAMPLE_COVERAGE_VALUE =>
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Ok(WebGLParameter::Float(gl::get_float_v(param_id))),
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gl::VERSION => Ok(WebGLParameter::String("WebGL 1.0".to_owned())),
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gl::RENDERER |
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gl::VENDOR => Ok(WebGLParameter::String("Mozilla/Servo".to_owned())),
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gl::SHADING_LANGUAGE_VERSION => Ok(WebGLParameter::String("WebGL GLSL ES 1.0".to_owned())),
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// TODO(zbarsky, ecoal95): Implement support for the following valid parameters
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// Float32Array
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gl::ALIASED_LINE_WIDTH_RANGE |
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gl::ALIASED_POINT_SIZE_RANGE |
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//gl::BLEND_COLOR |
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gl::COLOR_CLEAR_VALUE |
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gl::DEPTH_RANGE |
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// WebGLBuffer
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gl::ARRAY_BUFFER_BINDING |
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gl::ELEMENT_ARRAY_BUFFER_BINDING |
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// WebGLFrameBuffer
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gl::FRAMEBUFFER_BINDING |
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// WebGLRenderBuffer
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gl::RENDERBUFFER_BINDING |
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// WebGLProgram
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gl::CURRENT_PROGRAM |
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// WebGLTexture
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gl::TEXTURE_BINDING_2D |
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gl::TEXTURE_BINDING_CUBE_MAP |
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// sequence<GlBoolean>
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gl::COLOR_WRITEMASK |
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// Uint32Array
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gl::COMPRESSED_TEXTURE_FORMATS |
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// Int32Array
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gl::MAX_VIEWPORT_DIMS |
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gl::SCISSOR_BOX |
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gl::VIEWPORT => Err(WebGLError::InvalidEnum),
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// Invalid parameters
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_ => Err(WebGLError::InvalidEnum)
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};
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chan.send(result).unwrap();
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}
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fn buffer_parameter(&self,
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target: u32,
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param_id: u32,
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chan: IpcSender<WebGLResult<WebGLParameter>>) {
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let result = match param_id {
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gl::BUFFER_SIZE |
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gl::BUFFER_USAGE =>
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Ok(WebGLParameter::Int(gl::get_buffer_parameter_iv(target, param_id))),
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_ => Err(WebGLError::InvalidEnum),
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};
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chan.send(result).unwrap();
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}
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fn program_parameter(&self,
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program_id: u32,
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param_id: u32,
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chan: IpcSender<WebGLResult<WebGLParameter>>) {
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let result = match param_id {
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gl::DELETE_STATUS |
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gl::LINK_STATUS |
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gl::VALIDATE_STATUS =>
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Ok(WebGLParameter::Bool(gl::get_program_iv(program_id, param_id) != 0)),
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gl::ATTACHED_SHADERS |
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gl::ACTIVE_ATTRIBUTES |
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gl::ACTIVE_UNIFORMS =>
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Ok(WebGLParameter::Int(gl::get_program_iv(program_id, param_id))),
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_ => Err(WebGLError::InvalidEnum),
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};
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chan.send(result).unwrap();
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}
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fn shader_parameter(&self,
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shader_id: u32,
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param_id: u32,
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chan: IpcSender<WebGLShaderParameter>) {
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shader_id: u32,
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param_id: u32,
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chan: IpcSender<WebGLResult<WebGLParameter>>) {
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let result = match param_id {
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gl::SHADER_TYPE =>
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WebGLShaderParameter::Int(gl::get_shader_iv(shader_id, param_id)),
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gl::DELETE_STATUS | gl::COMPILE_STATUS =>
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WebGLShaderParameter::Bool(gl::get_shader_iv(shader_id, param_id) != 0),
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_ => panic!("Unexpected shader parameter type"),
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Ok(WebGLParameter::Int(gl::get_shader_iv(shader_id, param_id))),
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gl::DELETE_STATUS |
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gl::COMPILE_STATUS =>
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Ok(WebGLParameter::Bool(gl::get_shader_iv(shader_id, param_id) != 0)),
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_ => Err(WebGLError::InvalidEnum),
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};
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chan.send(result).unwrap();
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