mirror of
https://github.com/libretro/RetroArch
synced 2024-07-08 20:25:47 +00:00
7b711214a7
Adds support for sub-frame shaders to vulkan/glcore/dx10-11-12. Builds on the concept already present for frame duplication in use for BFI, to present multiple 'sub' frames per real frame to the shaders, so they can run at a higher framerate than the content framerate. Must be enabled via subframe shaders setting under synchronization settings to be active. Will allow BFI to be implemented inside of the shaders, among any other use for the higher framerate shader authors can devise. CurrentSubFrame and TotalSubFrames have been available inside the shaders to track what they want to do on an given subframe. TotalSubFrames will always be 1 when the setting is disabled (and when in menu/ff/pause). Framecount will not increment on sub-frames, as it does not for injected bfi frames now. Should not interfere with any existing shaders that do not check for subframes.
118 lines
3.5 KiB
C
118 lines
3.5 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2017 - Hans-Kristian Arntzen
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef SLANG_REFLECTION_H_
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#define SLANG_REFLECTION_H_
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/* Textures with built-in meaning. */
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enum slang_texture_semantic
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{
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/* The input texture to the filter chain.
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* Canonical name: "Original". */
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SLANG_TEXTURE_SEMANTIC_ORIGINAL = 0,
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/* The output from pass N - 1 if executing pass N, or ORIGINAL
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* if pass #0 is executed.
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* Canonical name: "Source".
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*/
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SLANG_TEXTURE_SEMANTIC_SOURCE = 1,
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/* The original inputs with a history back in time.
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* Canonical name: "OriginalHistory#", e.g. "OriginalHistory2" <- Two frames back.
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* "OriginalHistory0" is an alias for SEMANTIC_ORIGINAL.
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* Size name: "OriginalHistorySize#".
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*/
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SLANG_TEXTURE_SEMANTIC_ORIGINAL_HISTORY = 2,
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/* The output from pass #N, where pass #0 is the first pass.
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* Canonical name: "PassOutput#", e.g. "PassOutput3".
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* Size name: "PassOutputSize#".
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*/
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SLANG_TEXTURE_SEMANTIC_PASS_OUTPUT = 3,
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/* The output from pass #N, one frame ago where pass #0 is the first pass.
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* It is not valid to use the pass feedback from a pass which is not offscreen.
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* Canonical name: "PassFeedback#", e.g. "PassFeedback2".
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*/
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SLANG_TEXTURE_SEMANTIC_PASS_FEEDBACK = 4,
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/* Inputs from static textures, defined by the user.
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* There is no canonical name, and the only way to use these semantics are by
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* remapping.
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*/
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SLANG_TEXTURE_SEMANTIC_USER = 5,
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SLANG_NUM_TEXTURE_SEMANTICS,
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SLANG_INVALID_TEXTURE_SEMANTIC = -1
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};
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enum slang_semantic
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{
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/* mat4, MVP */
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SLANG_SEMANTIC_MVP = 0,
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/* vec4, viewport size of current pass */
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SLANG_SEMANTIC_OUTPUT = 1,
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/* vec4, viewport size of final pass */
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SLANG_SEMANTIC_FINAL_VIEWPORT = 2,
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/* uint, frame count with modulo */
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SLANG_SEMANTIC_FRAME_COUNT = 3,
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/* int, frame direction */
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SLANG_SEMANTIC_FRAME_DIRECTION = 4,
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/* uint, rotation */
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SLANG_SEMANTIC_ROTATION = 5,
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/* uint, sub frames per content frame */
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SLANG_SEMANTIC_TOTAL_SUBFRAMES = 6,
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/* uint, current sub frame */
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SLANG_SEMANTIC_CURRENT_SUBFRAME = 7,
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SLANG_NUM_BASE_SEMANTICS,
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/* float, user defined parameter, arrayed */
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SLANG_SEMANTIC_FLOAT_PARAMETER = 8,
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SLANG_NUM_SEMANTICS,
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SLANG_INVALID_SEMANTIC = -1
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};
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enum slang_stage
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{
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SLANG_STAGE_VERTEX_MASK = 1 << 0,
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SLANG_STAGE_FRAGMENT_MASK = 1 << 1
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};
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enum slang_constant_buffer
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{
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SLANG_CBUFFER_UBO = 0,
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SLANG_CBUFFER_PC,
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SLANG_CBUFFER_MAX
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};
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/* Vulkan maximum texture bindings inside shader. D3D11 has hard limit of 16 */
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#define SLANG_NUM_BINDINGS 16
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struct slang_texture_semantic_map
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{
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enum slang_texture_semantic semantic;
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unsigned index;
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};
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struct slang_semantic_map
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{
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enum slang_semantic semantic;
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unsigned index;
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};
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#endif
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