nir: Add a flag to lower_io to force "sample" interpolation

[mesa.git] / src / mesa / drivers / dri / i965 / brw_link.cpp

diff --git a/src/mesa/drivers/dri/i965/brw_link.cpp b/src/mesa/drivers/dri/i965/brw_link.cpp
index 3bb04fa6effc1ca105fc65c93d74ddb66e1e8dc5..2b1fa61e11797b9e256a1f05630523d88b539f0c 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_link.cpp
+++ b/src/mesa/drivers/dri/i965/brw_link.cpp
@@ -43,12 +43,12 @@ static bool
 brw_shader_precompile(struct gl_context *ctx,
                       struct gl_shader_program *sh_prog)
 {
-   struct gl_shader *vs = sh_prog->_LinkedShaders[MESA_SHADER_VERTEX];
-   struct gl_shader *tcs = sh_prog->_LinkedShaders[MESA_SHADER_TESS_CTRL];
-   struct gl_shader *tes = sh_prog->_LinkedShaders[MESA_SHADER_TESS_EVAL];
-   struct gl_shader *gs = sh_prog->_LinkedShaders[MESA_SHADER_GEOMETRY];
-   struct gl_shader *fs = sh_prog->_LinkedShaders[MESA_SHADER_FRAGMENT];
-   struct gl_shader *cs = sh_prog->_LinkedShaders[MESA_SHADER_COMPUTE];
+   struct gl_linked_shader *vs = sh_prog->_LinkedShaders[MESA_SHADER_VERTEX];
+   struct gl_linked_shader *tcs = sh_prog->_LinkedShaders[MESA_SHADER_TESS_CTRL];
+   struct gl_linked_shader *tes = sh_prog->_LinkedShaders[MESA_SHADER_TESS_EVAL];
+   struct gl_linked_shader *gs = sh_prog->_LinkedShaders[MESA_SHADER_GEOMETRY];
+   struct gl_linked_shader *fs = sh_prog->_LinkedShaders[MESA_SHADER_FRAGMENT];
+   struct gl_linked_shader *cs = sh_prog->_LinkedShaders[MESA_SHADER_COMPUTE];
 
    if (fs && !brw_fs_precompile(ctx, sh_prog, fs->Program))
       return false;
@@ -89,7 +89,7 @@ static void
 process_glsl_ir(gl_shader_stage stage,
                 struct brw_context *brw,
                 struct gl_shader_program *shader_prog,
-                struct gl_shader *shader)
+                struct gl_linked_shader *shader)
 {
    struct gl_context *ctx = &brw->ctx;
    const struct brw_compiler *compiler = brw->intelScreen->compiler;
@@ -101,19 +101,27 @@ process_glsl_ir(gl_shader_stage stage,
 
    ralloc_adopt(mem_ctx, shader->ir);
 
+   lower_blend_equation_advanced(shader);
+
    /* lower_packing_builtins() inserts arithmetic instructions, so it
     * must precede lower_instructions().
     */
    brw_lower_packing_builtins(brw, shader->Stage, shader->ir);
    do_mat_op_to_vec(shader->ir);
-   lower_instructions(shader->ir,
-                      DIV_TO_MUL_RCP |
-                      SUB_TO_ADD_NEG |
-                      EXP_TO_EXP2 |
-                      LOG_TO_LOG2 |
-                      DFREXP_DLDEXP_TO_ARITH |
-                      CARRY_TO_ARITH |
-                      BORROW_TO_ARITH);
+
+   unsigned instructions_to_lower = (DIV_TO_MUL_RCP |
+                                     SUB_TO_ADD_NEG |
+                                     EXP_TO_EXP2 |
+                                     LOG_TO_LOG2 |
+                                     DFREXP_DLDEXP_TO_ARITH);
+   if (brw->gen < 7) {
+      instructions_to_lower |= BIT_COUNT_TO_MATH |
+                               EXTRACT_TO_SHIFTS |
+                               INSERT_TO_SHIFTS |
+                               REVERSE_TO_SHIFTS;
+   }
+
+   lower_instructions(shader->ir, instructions_to_lower);
 
    /* Pre-gen6 HW can only nest if-statements 16 deep.  Beyond this,
     * if-statements need to be flattened.
@@ -126,10 +134,11 @@ process_glsl_ir(gl_shader_stage stage,
    do_vec_index_to_cond_assign(shader->ir);
    lower_vector_insert(shader->ir, true);
    lower_offset_arrays(shader->ir);
-   brw_do_lower_unnormalized_offset(shader->ir);
    lower_noise(shader->ir);
    lower_quadop_vector(shader->ir, false);
 
+   do_copy_propagation(shader->ir);
+
    bool lowered_variable_indexing =
       lower_variable_index_to_cond_assign((gl_shader_stage)stage,
                                           shader->ir,
@@ -184,16 +193,14 @@ process_glsl_ir(gl_shader_stage stage,
    }
 }
 
-extern "C" struct gl_shader *
-brw_new_shader(struct gl_context *ctx, GLuint name, gl_shader_stage stage)
+extern "C" struct gl_linked_shader *
+brw_new_shader(gl_shader_stage stage)
 {
    struct brw_shader *shader;
 
    shader = rzalloc(NULL, struct brw_shader);
    if (shader) {
       shader->base.Stage = stage;
-      shader->base.Name = name;
-      _mesa_init_shader(ctx, &shader->base);
    }
 
    return &shader->base;
@@ -207,13 +214,13 @@ brw_link_shader(struct gl_context *ctx, struct gl_shader_program *shProg)
    unsigned int stage;
 
    for (stage = 0; stage < ARRAY_SIZE(shProg->_LinkedShaders); stage++) {
-      struct gl_shader *shader = shProg->_LinkedShaders[stage];
+      struct gl_linked_shader *shader = shProg->_LinkedShaders[stage];
       if (!shader)
          continue;
 
       struct gl_program *prog =
          ctx->Driver.NewProgram(ctx, _mesa_shader_stage_to_program(stage),
-                                shader->Name);
+                                0);
       if (!prog)
         return false;
       prog->Parameters = _mesa_new_parameter_list();
@@ -279,5 +286,16 @@ brw_link_shader(struct gl_context *ctx, struct gl_shader_program *shProg)
       return false;
 
    build_program_resource_list(ctx, shProg);
+
+   for (stage = 0; stage < ARRAY_SIZE(shProg->_LinkedShaders); stage++) {
+      struct gl_linked_shader *shader = shProg->_LinkedShaders[stage];
+      if (!shader)
+         continue;
+
+      /* The GLSL IR won't be needed anymore. */
+      ralloc_free(shader->ir);
+      shader->ir = NULL;
+   }
+
    return true;
 }