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Completed command buffer chapter

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Warwick 2025-01-16 16:28:03 +00:00
parent 9e446a579f
commit 41056d6026
1 changed files with 91 additions and 5 deletions
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96
src/main.c
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@ -60,6 +60,8 @@ typedef struct Application {
VkPipeline graphicsPipeline;
VkFramebuffer *swapChainFramebuffers;
uint32_t swapChainFramebufferCount;
VkCommandPool commandPool;
VkCommandBuffer commandBuffer;
} Application;
typedef struct SwapChainSupportDetails {
@ -737,11 +739,6 @@ void createGraphicsPipeline(Application *app) {
viewportState.viewportCount = 1;
viewportState.scissorCount = 1;
VkRect2D scissor = {0};
scissor.offset.x = 0;
scissor.offset.y = 0;
scissor.extent = app->swapChainExtent;
VkPipelineRasterizationStateCreateInfo rasterizer = {0};
rasterizer.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
rasterizer.depthClampEnable = VK_FALSE;
@ -888,6 +885,92 @@ void createFramebuffers(Application *app) {
}
}
void CreateCommandPool(Application *app) {
QueueFamilyIndices queueFamilyIndices =
findQueueFamilies(app->physicalDevice, &app->surface);
VkCommandPoolCreateInfo poolInfo = {0};
poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
poolInfo.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
poolInfo.queueFamilyIndex = queueFamilyIndices.graphicsFamily;
if (vkCreateCommandPool(app->device, &poolInfo, NULL, &app->commandPool) !=
VK_SUCCESS) {
fprintf(stderr, "Failed to create command pool!");
exit(EXIT_FAILURE);
}
}
void recordCommandBuffer(Application *app, VkCommandBuffer commandBuffer,
uint32_t imageIndex) {
VkCommandBufferBeginInfo beginInfo = {0};
beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
beginInfo.flags = 0; // Optional
beginInfo.pInheritanceInfo = NULL; // Optional
if (vkBeginCommandBuffer(commandBuffer, &beginInfo) != VK_SUCCESS) {
fprintf(stderr, "Failed to begin recording command buffer!");
exit(EXIT_FAILURE);
}
VkRenderPassBeginInfo renderPassInfo = {0};
renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
renderPassInfo.renderPass = app->renderPass;
renderPassInfo.framebuffer = app->swapChainFramebuffers[imageIndex];
renderPassInfo.renderArea.offset.x = 0;
renderPassInfo.renderArea.offset.y = 0;
renderPassInfo.renderArea.extent = app->swapChainExtent;
VkClearValue clearColor = {{{0.0f, 0.0f, 0.0f, 1.0f}}};
renderPassInfo.clearValueCount = 1;
renderPassInfo.pClearValues = &clearColor;
vkCmdBeginRenderPass(commandBuffer, &renderPassInfo,
VK_SUBPASS_CONTENTS_INLINE);
vkCmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS,
app->graphicsPipeline);
VkViewport viewport = {0};
viewport.x = 0.0f;
viewport.y = 0.0f;
viewport.width = (float)app->swapChainExtent.width;
viewport.height = (float)app->swapChainExtent.height;
viewport.minDepth = 0.0f;
viewport.maxDepth = 1.0f;
vkCmdSetViewport(commandBuffer, 0, 1, &viewport);
VkRect2D scissor = {0};
scissor.offset.x = 0;
scissor.offset.y = 0;
scissor.extent = app->swapChainExtent;
vkCmdSetScissor(commandBuffer, 0, 1, &scissor);
vkCmdDraw(commandBuffer, 3, 1, 0, 0);
vkCmdEndRenderPass(commandBuffer);
if (vkEndCommandBuffer(commandBuffer) != VK_SUCCESS) {
fprintf(stderr, "Failed to record command buffer!");
exit(EXIT_FAILURE);
}
}
void createCommandBuffer(Application *app) {
VkCommandBufferAllocateInfo allocInfo = {0};
allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
allocInfo.commandPool = app->commandPool;
allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
allocInfo.commandBufferCount = 1;
if (vkAllocateCommandBuffers(app->device, &allocInfo, &app->commandBuffer) !=
VK_SUCCESS) {
fprintf(stderr, "Failed to allocate command buffers!");
exit(EXIT_FAILURE);
}
}
void initVulkan(Application *app) {
createInstance(app);
setupDebugMessenger(app);
@ -899,6 +982,8 @@ void initVulkan(Application *app) {
createRenderPass(app);
createGraphicsPipeline(app);
createFramebuffers(app);
CreateCommandPool(app);
createCommandBuffer(app);
}
void mainLoop(Application *app) {
@ -908,6 +993,7 @@ void mainLoop(Application *app) {
}
void cleanup(Application *app) {
vkDestroyCommandPool(app->device, app->commandPool, NULL);
for (uint i = 0; i < app->swapChainFramebufferCount; i++) {
vkDestroyFramebuffer(app->device, app->swapChainFramebuffers[i], NULL);
}