diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp index c6ac634a2ab..b3da2016ddd 100644 --- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp +++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp @@ -322,6 +322,7 @@ public: int glsl_version; bool native_integers; + bool have_sqrt; variable_storage *find_variable_storage(ir_variable *var); @@ -1761,13 +1762,18 @@ glsl_to_tgsi_visitor::visit(ir_expression *ir) break; case ir_unop_sqrt: - /* sqrt(x) = x * rsq(x). */ - emit_scalar(ir, TGSI_OPCODE_RSQ, result_dst, op[0]); - emit(ir, TGSI_OPCODE_MUL, result_dst, result_src, op[0]); - /* For incoming channels <= 0, set the result to 0. */ - op[0].negate = ~op[0].negate; - emit(ir, TGSI_OPCODE_CMP, result_dst, - op[0], result_src, st_src_reg_for_float(0.0)); + if (have_sqrt) { + emit_scalar(ir, TGSI_OPCODE_SQRT, result_dst, op[0]); + } + else { + /* sqrt(x) = x * rsq(x). */ + emit_scalar(ir, TGSI_OPCODE_RSQ, result_dst, op[0]); + emit(ir, TGSI_OPCODE_MUL, result_dst, result_src, op[0]); + /* For incoming channels <= 0, set the result to 0. */ + op[0].negate = ~op[0].negate; + emit(ir, TGSI_OPCODE_CMP, result_dst, + op[0], result_src, st_src_reg_for_float(0.0)); + } break; case ir_unop_rsq: emit_scalar(ir, TGSI_OPCODE_RSQ, result_dst, op[0]); @@ -4956,18 +4962,23 @@ get_mesa_program(struct gl_context *ctx, bool progress; struct gl_shader_compiler_options *options = &ctx->ShaderCompilerOptions[_mesa_shader_type_to_index(shader->Type)]; + struct pipe_screen *pscreen = ctx->st->pipe->screen; + unsigned ptarget; switch (shader->Type) { case GL_VERTEX_SHADER: target = GL_VERTEX_PROGRAM_ARB; + ptarget = PIPE_SHADER_VERTEX; target_string = "vertex"; break; case GL_FRAGMENT_SHADER: target = GL_FRAGMENT_PROGRAM_ARB; + ptarget = PIPE_SHADER_FRAGMENT; target_string = "fragment"; break; case GL_GEOMETRY_SHADER: target = GL_GEOMETRY_PROGRAM_NV; + ptarget = PIPE_SHADER_GEOMETRY; target_string = "geometry"; break; default: @@ -4989,6 +5000,9 @@ get_mesa_program(struct gl_context *ctx, v->glsl_version = ctx->Const.GLSLVersion; v->native_integers = ctx->Const.NativeIntegers; + v->have_sqrt = pscreen->get_shader_param(pscreen, ptarget, + PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED); + _mesa_generate_parameters_list_for_uniforms(shader_program, shader, prog->Parameters); |