mirror of
https://git.code.sf.net/p/quake/quakeforge
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918c3af095
While I could reconstruct the position from the screen coords and depth, this is easier and good enough for now. Reconstruction is an optimization thing.
207 lines
6.2 KiB
C
207 lines
6.2 KiB
C
/*
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vulkan_lighting.c
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Vulkan lighting pass pipeline
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Copyright (C) 2021 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2021/2/23
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include <stdlib.h>
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#include "qfalloca.h"
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#include "QF/sys.h"
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#include "QF/Vulkan/qf_lighting.h"
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#include "QF/Vulkan/debug.h"
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#include "QF/Vulkan/descriptor.h"
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#include "QF/Vulkan/device.h"
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#include "QF/Vulkan/image.h"
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#include "r_internal.h"
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#include "vid_vulkan.h"
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void
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Vulkan_Lighting_Draw (vulkan_ctx_t *ctx)
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{
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qfv_device_t *device = ctx->device;
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qfv_devfuncs_t *dfunc = device->funcs;
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lightingctx_t *lctx = ctx->lighting_context;
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__auto_type cframe = &ctx->frames.a[ctx->curFrame];
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lightingframe_t *lframe = &lctx->frames.a[ctx->curFrame];
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VkCommandBuffer cmd = lframe->cmd;
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DARRAY_APPEND (&cframe->cmdSets[QFV_passLighting], cmd);
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dfunc->vkResetCommandBuffer (cmd, 0);
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VkCommandBufferInheritanceInfo inherit = {
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VK_STRUCTURE_TYPE_COMMAND_BUFFER_INHERITANCE_INFO, 0,
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ctx->renderpass, QFV_passLighting,
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cframe->framebuffer,
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0, 0, 0,
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};
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VkCommandBufferBeginInfo beginInfo = {
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VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO, 0,
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VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT
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| VK_COMMAND_BUFFER_USAGE_RENDER_PASS_CONTINUE_BIT, &inherit,
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};
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dfunc->vkBeginCommandBuffer (cmd, &beginInfo);
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dfunc->vkCmdBindPipeline (cmd, VK_PIPELINE_BIND_POINT_GRAPHICS,
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lctx->pipeline);
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lframe->imageInfo[0].imageView = ctx->attachment_views->a[QFV_attachDepth];
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lframe->imageInfo[1].imageView = ctx->attachment_views->a[QFV_attachColor];
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lframe->imageInfo[2].imageView
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= ctx->attachment_views->a[QFV_attachNormal];
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lframe->imageInfo[3].imageView
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= ctx->attachment_views->a[QFV_attachPosition];
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dfunc->vkUpdateDescriptorSets (device->dev, LIGHTING_IMAGE_INFOS,
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lframe->descriptors + LIGHTING_BUFFER_INFOS,
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0, 0);
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VkDescriptorSet sets[] = {
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lframe->descriptors[1].dstSet,
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lframe->descriptors[0].dstSet,
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};
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dfunc->vkCmdBindDescriptorSets (cmd, VK_PIPELINE_BIND_POINT_GRAPHICS,
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lctx->layout, 0, 2, sets, 0, 0);
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VkViewport viewport = {0, 0, vid.width, vid.height, 0, 1};
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VkRect2D scissor = { {0, 0}, {vid.width, vid.height} };
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dfunc->vkCmdSetViewport (cmd, 0, 1, &viewport);
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dfunc->vkCmdSetScissor (cmd, 0, 1, &scissor);
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VkDeviceSize offset = 0;
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dfunc->vkCmdBindVertexBuffers (cmd, 0, 1, &ctx->quad_buffer, &offset);
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dfunc->vkCmdDraw (cmd, 4, 1, 0, 0);
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dfunc->vkEndCommandBuffer (cmd);
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}
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static VkDescriptorBufferInfo base_buffer_info = {
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0, 0, VK_WHOLE_SIZE
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};
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static VkDescriptorImageInfo base_image_info = {
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0, 0, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL
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};
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static VkWriteDescriptorSet base_buffer_write = {
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VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET, 0, 0,
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0, 0, 1,
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VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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0, 0, 0
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};
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static VkWriteDescriptorSet base_image_write = {
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VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET, 0, 0,
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0, 0, 1,
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VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT,
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0, 0, 0
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};
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void
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Vulkan_Lighting_Init (vulkan_ctx_t *ctx)
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{
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qfv_device_t *device = ctx->device;
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lightingctx_t *lctx = calloc (1, sizeof (lightingctx_t));
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ctx->lighting_context = lctx;
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size_t frames = ctx->frames.size;
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DARRAY_INIT (&lctx->frames, frames);
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DARRAY_RESIZE (&lctx->frames, frames);
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lctx->frames.grow = 0;
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lctx->pipeline = Vulkan_CreatePipeline (ctx, "lighting");
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lctx->layout = Vulkan_CreatePipelineLayout (ctx, "lighting_layout");
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__auto_type cmdSet = QFV_AllocCommandBufferSet (1, alloca);
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__auto_type attach = QFV_AllocDescriptorSetLayoutSet (frames, alloca);
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__auto_type lights = QFV_AllocDescriptorSetLayoutSet (frames, alloca);
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for (size_t i = 0; i < frames; i++) {
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attach->a[i] = Vulkan_CreateDescriptorSetLayout (ctx,
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"lighting_attach");
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lights->a[i] = Vulkan_CreateDescriptorSetLayout (ctx,
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"lighting_lights");
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}
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__auto_type attach_pool = Vulkan_CreateDescriptorPool (ctx,
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"lighting_attach_pool");
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__auto_type lights_pool = Vulkan_CreateDescriptorPool (ctx,
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"lighting_lights_pool");
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__auto_type attach_set = QFV_AllocateDescriptorSet (device, attach_pool,
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attach);
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__auto_type lights_set = QFV_AllocateDescriptorSet (device, lights_pool,
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lights);
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for (size_t i = 0; i < frames; i++) {
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__auto_type lframe = &lctx->frames.a[i];
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QFV_AllocateCommandBuffers (device, ctx->cmdpool, 1, cmdSet);
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lframe->cmd = cmdSet->a[0];
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QFV_duSetObjectName (device, VK_OBJECT_TYPE_COMMAND_BUFFER,
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lframe->cmd, "cmd:lighting");
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for (int j = 0; j < LIGHTING_BUFFER_INFOS; j++) {
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lframe->bufferInfo[j] = base_buffer_info;
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lframe->descriptors[j] = base_buffer_write;
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lframe->descriptors[j].dstSet = lights_set->a[i];
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lframe->descriptors[j].dstBinding = j;
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lframe->descriptors[j].pBufferInfo = &lframe->bufferInfo[j];
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}
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for (int j = 0; j < LIGHTING_IMAGE_INFOS; j++) {
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lframe->imageInfo[j] = base_image_info;
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lframe->imageInfo[j].sampler = 0;
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int k = j + LIGHTING_BUFFER_INFOS;
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lframe->descriptors[k] = base_image_write;
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lframe->descriptors[k].dstSet = attach_set->a[i];
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lframe->descriptors[k].dstBinding = j;
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lframe->descriptors[k].pImageInfo = &lframe->imageInfo[j];
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}
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}
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free (attach_set);
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free (lights_set);
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}
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void
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Vulkan_Lighting_Shutdown (vulkan_ctx_t *ctx)
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{
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qfv_device_t *device = ctx->device;
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qfv_devfuncs_t *dfunc = device->funcs;
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lightingctx_t *lctx = ctx->lighting_context;
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dfunc->vkDestroyPipeline (device->dev, lctx->pipeline, 0);
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free (lctx->frames.a);
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free (lctx);
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}
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