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Added simple mesh class

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This commit is contained in:
saschawillems 2016-03-15 22:22:07 +01:00
parent 40ca99955b
commit 708bfeb6e5
1 changed files with 68 additions and 0 deletions
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68
base/vulkanMeshLoader.hpp
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@ -75,6 +75,74 @@ namespace vkMeshLoader
return vSize; return vSize;
} }
// Stores some additonal info and functions for
// specifying pipelines, vertex bindings, etc.
class Mesh
{
public:
MeshBuffer buffers;
VkPipelineLayout pipelineLayout = VK_NULL_HANDLE;
VkPipeline pipeline = VK_NULL_HANDLE;
VkDescriptorSet descriptorSet = VK_NULL_HANDLE;
uint32_t vertexBufferBinding = 0;
VkPipelineVertexInputStateCreateInfo vertexInputState;
VkVertexInputBindingDescription bindingDescription;
std::vector<VkVertexInputAttributeDescription> attributeDescriptions;
void setupVertexInputState(std::vector<vkMeshLoader::VertexLayout> layout)
{
bindingDescription = vkTools::initializers::vertexInputBindingDescription(
vertexBufferBinding,
vertexSize(layout),
VK_VERTEX_INPUT_RATE_VERTEX);
attributeDescriptions.clear();
uint32_t offset = 0;
uint32_t binding = 0;
for (auto& layoutDetail : layout)
{
// Format (layout)
VkFormat format = (layoutDetail == VERTEX_LAYOUT_UV) ? VK_FORMAT_R32G32_SFLOAT : VK_FORMAT_R32G32B32_SFLOAT;
attributeDescriptions.push_back(
vkTools::initializers::vertexInputAttributeDescription(
vertexBufferBinding,
binding,
format,
offset));
// Offset
offset += (layoutDetail == VERTEX_LAYOUT_UV) ? (2 * sizeof(float)) : (3 * sizeof(float));
binding++;
}
vertexInputState = vkTools::initializers::pipelineVertexInputStateCreateInfo();
vertexInputState.vertexBindingDescriptionCount = 1;
vertexInputState.pVertexBindingDescriptions = &bindingDescription;
vertexInputState.vertexAttributeDescriptionCount = attributeDescriptions.size();
vertexInputState.pVertexAttributeDescriptions = attributeDescriptions.data();
}
void drawIndexed(VkCommandBuffer cmdBuffer)
{
VkDeviceSize offsets[1] = { 0 };
if (pipeline != VK_NULL_HANDLE)
{
vkCmdBindPipeline(cmdBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
}
if ((pipelineLayout != VK_NULL_HANDLE) && (descriptorSet != VK_NULL_HANDLE))
{
vkCmdBindDescriptorSets(cmdBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, NULL);
}
vkCmdBindVertexBuffers(cmdBuffer, vertexBufferBinding, 1, &buffers.vertices.buf, offsets);
vkCmdBindIndexBuffer(cmdBuffer, buffers.indices.buf, 0, VK_INDEX_TYPE_UINT32);
vkCmdDrawIndexed(cmdBuffer, buffers.indexCount, 1, 0, 0, 0);
}
};
static void freeMeshBufferResources(VkDevice device, vkMeshLoader::MeshBuffer *meshBuffer) static void freeMeshBufferResources(VkDevice device, vkMeshLoader::MeshBuffer *meshBuffer)
{ {
vkDestroyBuffer(device, meshBuffer->vertices.buf, nullptr); vkDestroyBuffer(device, meshBuffer->vertices.buf, nullptr);