mesa/glsl: add support for EXT_shader_implicit_conversions

EXT_shader_implicit_conversions adds support for implicit conversions
for GLES 3.1 and above.

This is essentially a subset of ARB_gpu_shader5, and augments
OES_gpu_shader5.

Signed-off-by: Erik Faye-Lund <[email protected]>
Reviewed-by: Tapani Pälli <[email protected]>

3 files changed, 7 insertions, 2 deletions

diff --git a/src/compiler/glsl/glsl_parser_extras.cpp b/src/compiler/glsl/glsl_parser_extras.cpp
index 1bdd7c4bf17..2a58908c226 100644
--- a/src/compiler/glsl/glsl_parser_extras.cpp
+++ b/src/compiler/glsl/glsl_parser_extras.cpp
@@ -718,6 +718,7 @@ static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
    EXT(EXT_separate_shader_objects),
    EXT(EXT_shader_framebuffer_fetch),
    EXT(EXT_shader_framebuffer_fetch_non_coherent),
+   EXT(EXT_shader_implicit_conversions),
    EXT(EXT_shader_integer_mix),
    EXT_AEP(EXT_shader_io_blocks),
    EXT(EXT_shader_samples_identical),
diff --git a/src/compiler/glsl/glsl_parser_extras.h b/src/compiler/glsl/glsl_parser_extras.h
index e1144a19c15..985200ecab5 100644
--- a/src/compiler/glsl/glsl_parser_extras.h
+++ b/src/compiler/glsl/glsl_parser_extras.h
@@ -346,13 +346,14 @@ struct _mesa_glsl_parse_state {
 
    bool has_implicit_conversions() const
    {
-      return is_version(120, 0);
+      return EXT_shader_implicit_conversions_enable || is_version(120, 0);
    }
 
    bool has_implicit_uint_to_int_conversion() const
    {
       return ARB_gpu_shader5_enable ||
              MESA_shader_integer_functions_enable ||
+             EXT_shader_implicit_conversions_enable ||
              is_version(400, 0);
    }
 
@@ -806,6 +807,8 @@ struct _mesa_glsl_parse_state {
    bool EXT_shader_framebuffer_fetch_warn;
    bool EXT_shader_framebuffer_fetch_non_coherent_enable;
    bool EXT_shader_framebuffer_fetch_non_coherent_warn;
+   bool EXT_shader_implicit_conversions_enable;
+   bool EXT_shader_implicit_conversions_warn;
    bool EXT_shader_integer_mix_enable;
    bool EXT_shader_integer_mix_warn;
    bool EXT_shader_io_blocks_enable;
diff --git a/src/compiler/glsl/ir_function.cpp b/src/compiler/glsl/ir_function.cpp
index 3ee0d170fb2..97262f0f4b9 100644
--- a/src/compiler/glsl/ir_function.cpp
+++ b/src/compiler/glsl/ir_function.cpp
@@ -274,7 +274,8 @@ choose_best_inexact_overload(_mesa_glsl_parse_state *state,
     * assume everything supported in any GLSL version is available.
     */
    if (!state || state->is_version(400, 0) || state->ARB_gpu_shader5_enable ||
-       state->MESA_shader_integer_functions_enable) {
+       state->MESA_shader_integer_functions_enable ||
+       state->EXT_shader_implicit_conversions_enable) {
       for (ir_function_signature **sig = matches; sig < matches + num_matches; sig++) {
          if (is_best_inexact_overload(actual_parameters, matches, num_matches, *sig))
             return *sig;