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Support for high precision Metal texture samplers. (#1060)

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* GL Renderer, OSX, no swap chain: Bind back buffer fbo ready for NSOpenGLContext flushBuffer

* Support for high precision Metal texture samplers.
This commit is contained in:
Don Williamson 2017-03-01 17:01:54 +00:00 committed by Branimir Karadžić
parent eaa5ccf6ad
commit 1d6b4794a9
1 changed files with 15 additions and 3 deletions
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18
3rdparty/glsl-optimizer/src/glsl/glsl_optimizer.cpp vendored
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@ -280,6 +280,14 @@ static void propagate_precision_texture(ir_instruction *ir, void *data)
((precision_ctx*)data)->res = true;
}
static void propagate_precision_texture_metal(ir_instruction* ir, void* data)
{
// There are no precision specifiers in Metal
ir_texture* tex = ir->as_texture();
if (tex)
tex->set_precision(glsl_precision_undefined);
}
struct undefined_ass_ctx
{
ir_variable* var;
@ -386,7 +394,7 @@ static void propagate_precision_call(ir_instruction *ir, void *data)
}
}
static bool propagate_precision(exec_list* list, bool assign_high_to_undefined)
static bool propagate_precision(exec_list* list, bool metal_target)
{
bool anyProgress = false;
precision_ctx ctx;
@ -396,7 +404,11 @@ static bool propagate_precision(exec_list* list, bool assign_high_to_undefined)
ctx.root_ir = list;
foreach_in_list(ir_instruction, ir, list)
{
visit_tree (ir, propagate_precision_texture, &ctx);
if (metal_target)
visit_tree (ir, propagate_precision_texture_metal, &ctx);
else
visit_tree (ir, propagate_precision_texture, &ctx);
visit_tree (ir, propagate_precision_deref, &ctx);
bool hadProgress = ctx.res;
ctx.res = false;
@ -417,7 +429,7 @@ static bool propagate_precision(exec_list* list, bool assign_high_to_undefined)
anyProgress |= ctx.res;
// for globals that have undefined precision, set it to highp
if (assign_high_to_undefined)
if (metal_target)
{
foreach_in_list(ir_instruction, ir, list)
{