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Code Issues 151 Wiki Activity

Remove OpenGL ES / ANGLE render path

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Hirek
2026-10-15 00:53:28 +02:00
parent 3d3eef2e1c
commit 0e10ce4d0b
20 changed files with 127 additions and 516 deletions
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54
gl/shader.cpp
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@@ -127,45 +127,21 @@ std::pair<GLuint, std::string> gl::shader::process_source(const std::string &fil
else
throw shader_exception("unknown shader " + filename);
if (!Global.gfx_usegles)
{
str += "#version 330 core\n";
// textureGather() on sampler2DArrayShadow is core in GLSL 4.0. On 3.30
// desktop it requires GL_ARB_gpu_shader5 -- the older
// GL_ARB_texture_gather (2010) only adds the non-shadow and the plain
// sampler2DShadow overloads, NOT the sampler2DArrayShadow one we need
// for cascaded shadow PCF. Some drivers advertise texture_gather but
// reject the shadow-array overload because the spec for it lives in
// gpu_shader5; so emit only when gpu_shader5 is advertised. When the
// extension is missing, calc_shadow() in light_common.glsl falls back
// to the original 16-tap hardware-PCF loop via #ifndef.
// (Project's glad config doesn't generate GLAD_GL_ARB_gpu_shader5,
// so we query the live extension list -- see has_gl_extension above.)
static bool const have_gpu_shader5 = has_gl_extension("GL_ARB_gpu_shader5");
if (have_gpu_shader5)
str += "#extension GL_ARB_gpu_shader5 : enable\n";
}
else
{
if (GLAD_GL_ES_VERSION_3_1) {
str += "#version 310 es\n";
// GLES 3.1 lacks textureGather on shadow samplers in core; the
// EXT_gpu_shader5 extension adds it. Only emit the directive when
// the driver advertises support (see desktop comment above).
// (Glad config doesn't generate GLAD_GL_EXT_gpu_shader5 -- query
// the live extension string the same way.)
if (static bool const have_gpu_shader5 = has_gl_extension("GL_EXT_gpu_shader5"); have_gpu_shader5)
str += "#extension GL_EXT_gpu_shader5 : enable\n";
if (type == GL_GEOMETRY_SHADER)
str += "#extension GL_EXT_geometry_shader : require\n";
} else {
str += "#version 300 es\n";
}
str += "precision highp float;\n";
str += "precision highp int;\n";
str += "precision highp sampler2DShadow;\n";
str += "precision highp sampler2DArrayShadow;\n";
}
str += "#version 330 core\n";
// textureGather() on sampler2DArrayShadow is core in GLSL 4.0. On 3.30
// desktop it requires GL_ARB_gpu_shader5 -- the older
// GL_ARB_texture_gather (2010) only adds the non-shadow and the plain
// sampler2DShadow overloads, NOT the sampler2DArrayShadow one we need
// for cascaded shadow PCF. Some drivers advertise texture_gather but
// reject the shadow-array overload because the spec for it lives in
// gpu_shader5; so emit only when gpu_shader5 is advertised. When the
// extension is missing, calc_shadow() in light_common.glsl falls back
// to the original 16-tap hardware-PCF loop via #ifndef.
// (Project's glad config doesn't generate GLAD_GL_ARB_gpu_shader5,
// so we query the live extension list -- see has_gl_extension above.)
static bool const have_gpu_shader5 = has_gl_extension("GL_ARB_gpu_shader5");
if (have_gpu_shader5)
str += "#extension GL_ARB_gpu_shader5 : enable\n";
// expose the shader stage to glsl_common so vertex-only built-ins
// (gl_InstanceID, effective_modelview, etc.) can be guarded out of
// fragment/geometry compilations.