[Mesa-dev] [PATCH 21/24] st/mesa: Enable MESA_shader_integer_functions on all GLSL 1.30 platforms

[Ian Romanick]

From: Ian Romanick <ian.d.romanick at intel.com>

Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>
---
 src/mesa/state_tracker/st_extensions.c     |  1 +
 src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 16 +++++++++++++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index 412f598..f055bff 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -911,6 +911,7 @@ void st_init_extensions(struct pipe_screen *screen,
 
       extensions->EXT_shader_integer_mix = GL_TRUE;
       extensions->ARB_arrays_of_arrays = GL_TRUE;
+      extensions->MESA_shader_integer_functions = GL_TRUE;
    } else {
       /* Optional integer support for GLSL 1.2. */
       if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 07ec91a..9eabaf7 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -6824,7 +6824,21 @@ st_link_shader(struct gl_context *ctx, struct gl_shader_program *prog)
                          (have_dround ? 0 : DOPS_TO_DFRAC) |
                          (options->EmitNoPow ? POW_TO_EXP2 : 0) |
                          (!ctx->Const.NativeIntegers ? INT_DIV_TO_MUL_RCP : 0) |
-                         (options->EmitNoSat ? SAT_TO_CLAMP : 0));
+                         (options->EmitNoSat ? SAT_TO_CLAMP : 0) |
+                         /* Assume that if ARB_gpu_shader5 is not supported
+                          * then all of the extended integer functions need
+                          * lowering.  It may be necessary to add some caps
+                          * for individual instructions.
+                          */
+                         (!ctx->Extensions.ARB_gpu_shader5
+                          ? BIT_COUNT_TO_MATH |
+                            EXTRACT_TO_SHIFTS |
+                            INSERT_TO_SHIFTS |
+                            REVERSE_TO_SHIFTS |
+                            FIND_LSB_TO_FLOAT_CAST |
+                            FIND_MSB_TO_FLOAT_CAST |
+                            IMUL_HIGH_TO_MUL
+                          : 0));
 
       do_vec_index_to_cond_assign(ir);
       lower_vector_insert(ir, true);
-- 
2.5.5