| /* |
| * Copyright 2003 VMware, Inc. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sublicense, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR |
| * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| #include "main/context.h" |
| #include "main/macros.h" |
| #include "main/enums.h" |
| #include "main/dd.h" |
| |
| #include "intel_screen.h" |
| #include "brw_context.h" |
| #include "brw_defines.h" |
| |
| int |
| intel_translate_shadow_compare_func(GLenum func) |
| { |
| /* GL specifies the result of shadow comparisons as: |
| * 1 if ref <op> texel, |
| * 0 otherwise. |
| * |
| * The hardware does: |
| * 0 if texel <op> ref, |
| * 1 otherwise. |
| * |
| * So, these look a bit strange because there's both a negation |
| * and swapping of the arguments involved. |
| */ |
| switch (func) { |
| case GL_NEVER: |
| return BRW_COMPAREFUNCTION_ALWAYS; |
| case GL_LESS: |
| return BRW_COMPAREFUNCTION_LEQUAL; |
| case GL_LEQUAL: |
| return BRW_COMPAREFUNCTION_LESS; |
| case GL_GREATER: |
| return BRW_COMPAREFUNCTION_GEQUAL; |
| case GL_GEQUAL: |
| return BRW_COMPAREFUNCTION_GREATER; |
| case GL_NOTEQUAL: |
| return BRW_COMPAREFUNCTION_EQUAL; |
| case GL_EQUAL: |
| return BRW_COMPAREFUNCTION_NOTEQUAL; |
| case GL_ALWAYS: |
| return BRW_COMPAREFUNCTION_NEVER; |
| } |
| |
| unreachable("Invalid shadow comparison function."); |
| } |
| |
| int |
| intel_translate_compare_func(GLenum func) |
| { |
| switch (func) { |
| case GL_NEVER: |
| return BRW_COMPAREFUNCTION_NEVER; |
| case GL_LESS: |
| return BRW_COMPAREFUNCTION_LESS; |
| case GL_LEQUAL: |
| return BRW_COMPAREFUNCTION_LEQUAL; |
| case GL_GREATER: |
| return BRW_COMPAREFUNCTION_GREATER; |
| case GL_GEQUAL: |
| return BRW_COMPAREFUNCTION_GEQUAL; |
| case GL_NOTEQUAL: |
| return BRW_COMPAREFUNCTION_NOTEQUAL; |
| case GL_EQUAL: |
| return BRW_COMPAREFUNCTION_EQUAL; |
| case GL_ALWAYS: |
| return BRW_COMPAREFUNCTION_ALWAYS; |
| } |
| |
| unreachable("Invalid comparison function."); |
| } |
| |
| int |
| intel_translate_stencil_op(GLenum op) |
| { |
| switch (op) { |
| case GL_KEEP: |
| return BRW_STENCILOP_KEEP; |
| case GL_ZERO: |
| return BRW_STENCILOP_ZERO; |
| case GL_REPLACE: |
| return BRW_STENCILOP_REPLACE; |
| case GL_INCR: |
| return BRW_STENCILOP_INCRSAT; |
| case GL_DECR: |
| return BRW_STENCILOP_DECRSAT; |
| case GL_INCR_WRAP: |
| return BRW_STENCILOP_INCR; |
| case GL_DECR_WRAP: |
| return BRW_STENCILOP_DECR; |
| case GL_INVERT: |
| return BRW_STENCILOP_INVERT; |
| default: |
| return BRW_STENCILOP_ZERO; |
| } |
| } |
| |
| int |
| intel_translate_logic_op(GLenum opcode) |
| { |
| switch (opcode) { |
| case GL_CLEAR: |
| return BRW_LOGICOPFUNCTION_CLEAR; |
| case GL_AND: |
| return BRW_LOGICOPFUNCTION_AND; |
| case GL_AND_REVERSE: |
| return BRW_LOGICOPFUNCTION_AND_REVERSE; |
| case GL_COPY: |
| return BRW_LOGICOPFUNCTION_COPY; |
| case GL_COPY_INVERTED: |
| return BRW_LOGICOPFUNCTION_COPY_INVERTED; |
| case GL_AND_INVERTED: |
| return BRW_LOGICOPFUNCTION_AND_INVERTED; |
| case GL_NOOP: |
| return BRW_LOGICOPFUNCTION_NOOP; |
| case GL_XOR: |
| return BRW_LOGICOPFUNCTION_XOR; |
| case GL_OR: |
| return BRW_LOGICOPFUNCTION_OR; |
| case GL_OR_INVERTED: |
| return BRW_LOGICOPFUNCTION_OR_INVERTED; |
| case GL_NOR: |
| return BRW_LOGICOPFUNCTION_NOR; |
| case GL_EQUIV: |
| return BRW_LOGICOPFUNCTION_EQUIV; |
| case GL_INVERT: |
| return BRW_LOGICOPFUNCTION_INVERT; |
| case GL_OR_REVERSE: |
| return BRW_LOGICOPFUNCTION_OR_REVERSE; |
| case GL_NAND: |
| return BRW_LOGICOPFUNCTION_NAND; |
| case GL_SET: |
| return BRW_LOGICOPFUNCTION_SET; |
| default: |
| return BRW_LOGICOPFUNCTION_SET; |
| } |
| } |