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Auto merge of #25344 - jdm:webgl2-program-link, r=asajeffrey

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Set more ANGLE shader translation properties for WebGL 2

Fixes #25034.
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bors-servo 2020-01-07 18:26:40 -05:00 • committed by GitHub
commit 3f5cb0e2f5
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6 changed files with 225 additions and 43 deletions
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135
components/script/dom/webglshader.rs
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@ -18,7 +18,7 @@ use canvas_traits::webgl::{webgl_channel, GlType, WebGLVersion};
use canvas_traits::webgl::{GLLimits, WebGLCommand, WebGLError};
use canvas_traits::webgl::{WebGLResult, WebGLSLVersion, WebGLShaderId};
use dom_struct::dom_struct;
use mozangle::shaders::{BuiltInResources, Output, ShaderValidator};
use mozangle::shaders::{ffi, BuiltInResources, Output, ShaderValidator};
use std::cell::Cell;
use std::os::raw::c_int;
use std::sync::Once;
@ -81,6 +81,121 @@ impl WebGLShader {
}
}
// Based on https://searchfox.org/mozilla-central/rev/efdf9bb55789ea782ae3a431bda6be74a87b041e/gfx/angle/checkout/src/compiler/translator/ShaderLang.cpp#173
fn default_validator() -> BuiltInResources {
BuiltInResources {
// Constants.
MaxVertexAttribs: 8,
MaxVertexUniformVectors: 128,
MaxVaryingVectors: 8,
MaxVertexTextureImageUnits: 0,
MaxCombinedTextureImageUnits: 8,
MaxTextureImageUnits: 8,
MaxFragmentUniformVectors: 16,
MaxDrawBuffers: 1,
// Extensions.
OES_standard_derivatives: 0,
OES_EGL_image_external: 0,
OES_EGL_image_external_essl3: 0,
NV_EGL_stream_consumer_external: 0,
ARB_texture_rectangle: 0,
EXT_blend_func_extended: 0,
EXT_draw_buffers: 0,
EXT_frag_depth: 0,
EXT_shader_texture_lod: 0,
WEBGL_debug_shader_precision: 0,
EXT_shader_framebuffer_fetch: 0,
NV_shader_framebuffer_fetch: 0,
NV_draw_buffers: 0,
ARM_shader_framebuffer_fetch: 0,
//OVR_multiview: 0,
OVR_multiview2: 0,
EXT_YUV_target: 0,
EXT_geometry_shader: 0,
OES_texture_storage_multisample_2d_array: 0,
//OES_texture_3d: 0,
ANGLE_texture_multisample: 0,
ANGLE_multi_draw: 0,
// Disable highp precision in fragment shader by default.
FragmentPrecisionHigh: 0,
// GLSL ES 3.0 constants.
MaxVertexOutputVectors: 16,
MaxFragmentInputVectors: 15,
MinProgramTexelOffset: -8,
MaxProgramTexelOffset: 7,
// Extension constants.
MaxDualSourceDrawBuffers: 0,
MaxViewsOVR: 4,
// Disable name hashing by default.
HashFunction: None,
ArrayIndexClampingStrategy:
ffi::ShArrayIndexClampingStrategy::SH_CLAMP_WITH_CLAMP_INTRINSIC,
MaxExpressionComplexity: 256,
MaxCallStackDepth: 256,
MaxFunctionParameters: 1024,
// ES 3.1 Revision 4, 7.2 Built-in Constants
// ES 3.1, Revision 4, 8.13 Texture minification
// "The value of MIN_PROGRAM_TEXTURE_GATHER_OFFSET must be less than or equal to the value of
// MIN_PROGRAM_TEXEL_OFFSET. The value of MAX_PROGRAM_TEXTURE_GATHER_OFFSET must be greater than
// or equal to the value of MAX_PROGRAM_TEXEL_OFFSET"
MinProgramTextureGatherOffset: -8,
MaxProgramTextureGatherOffset: 7,
MaxImageUnits: 4,
MaxVertexImageUniforms: 0,
MaxFragmentImageUniforms: 0,
MaxComputeImageUniforms: 0,
MaxCombinedImageUniforms: 0,
MaxUniformLocations: 1024,
MaxCombinedShaderOutputResources: 4,
MaxComputeWorkGroupCount: [65535, 65535, 65535],
MaxComputeWorkGroupSize: [128, 128, 64],
MaxComputeUniformComponents: 512,
MaxComputeTextureImageUnits: 16,
MaxComputeAtomicCounters: 8,
MaxComputeAtomicCounterBuffers: 1,
MaxVertexAtomicCounters: 0,
MaxFragmentAtomicCounters: 0,
MaxCombinedAtomicCounters: 8,
MaxAtomicCounterBindings: 1,
MaxVertexAtomicCounterBuffers: 0,
MaxFragmentAtomicCounterBuffers: 0,
MaxCombinedAtomicCounterBuffers: 1,
MaxAtomicCounterBufferSize: 32,
MaxUniformBufferBindings: 32,
MaxShaderStorageBufferBindings: 4,
MaxPointSize: 0.0,
MaxGeometryUniformComponents: 1024,
MaxGeometryUniformBlocks: 12,
MaxGeometryInputComponents: 64,
MaxGeometryOutputComponents: 64,
MaxGeometryOutputVertices: 256,
MaxGeometryTotalOutputComponents: 1024,
MaxGeometryTextureImageUnits: 16,
MaxGeometryAtomicCounterBuffers: 0,
MaxGeometryAtomicCounters: 0,
MaxGeometryShaderStorageBlocks: 0,
MaxGeometryShaderInvocations: 32,
MaxGeometryImageUniforms: 0,
}
}
impl WebGLShader {
pub fn id(&self) -> WebGLShaderId {
self.id
@ -108,19 +223,31 @@ impl WebGLShader {
let source = self.source.borrow();
let params = BuiltInResources {
let mut params = BuiltInResources {
MaxVertexAttribs: limits.max_vertex_attribs as c_int,
MaxVertexUniformVectors: limits.max_vertex_uniform_vectors as c_int,
MaxVaryingVectors: limits.max_varying_vectors as c_int,
MaxVertexTextureImageUnits: limits.max_vertex_texture_image_units as c_int,
MaxCombinedTextureImageUnits: limits.max_combined_texture_image_units as c_int,
MaxTextureImageUnits: limits.max_texture_image_units as c_int,
MaxFragmentUniformVectors: limits.max_fragment_uniform_vectors as c_int,
MaxVertexOutputVectors: limits.max_vertex_output_vectors as c_int,
MaxFragmentInputVectors: limits.max_fragment_input_vectors as c_int,
MaxVaryingVectors: limits.max_varying_vectors as c_int,
OES_standard_derivatives: ext.is_enabled::<OESStandardDerivatives>() as c_int,
EXT_shader_texture_lod: ext.is_enabled::<EXTShaderTextureLod>() as c_int,
FragmentPrecisionHigh: 1,
..BuiltInResources::default()
..default_validator()
};
if webgl_version == WebGLVersion::WebGL2 {
params.MinProgramTexelOffset = limits.min_program_texel_offset as c_int;
params.MaxProgramTexelOffset = limits.max_program_texel_offset as c_int;
params.MaxDrawBuffers = limits.max_draw_buffers as c_int;
}
let validator = match webgl_version {
WebGLVersion::WebGL1 => {
let output_format = if api_type == GlType::Gles {