From baa6733872e778941597e60441ebb380a77ba8ca Mon Sep 17 00:00:00 2001 From: Xiang Silian Date: Thu, 18 Sep 2025 18:04:54 +0800 Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B9=E7=BA=B9=E7=90=86=E8=83=8C?= =?UTF-8?q?=E6=99=AF=E6=8B=89=E4=BC=B8?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../api/texture_loading/texture_loading.cpp | 156 +++++++++++++----- 1 file changed, 113 insertions(+), 43 deletions(-) diff --git a/samples/api/texture_loading/texture_loading.cpp b/samples/api/texture_loading/texture_loading.cpp index 2ba2f91..0fc7482 100644 --- a/samples/api/texture_loading/texture_loading.cpp +++ b/samples/api/texture_loading/texture_loading.cpp @@ -77,48 +77,118 @@ void TextureLoading::request_gpu_features(vkb::PhysicalDevice& gpu) } -// 生成简单的测试图像数据（红绿蓝三色条） -std::vector generateSimpleTestImage(int width, int height, int* outRowStride = nullptr) -{ - int rowStride = width * 4; // RGBA 每个像素4字节 - if (outRowStride) - { - *outRowStride = rowStride; + +void hslToRgb(float h, float s, float l, uint8_t& r, uint8_t& g, uint8_t& b) { + float c = (1 - std::abs(2 * l - 1)) * s; + float x = c * (1 - std::abs(std::fmod(h / 60.0f, 2.0f) - 1)); + float m = l - c / 2.0f; + + float r_, g_, b_; + + if (h < 60) { + r_ = c; g_ = x; b_ = 0; + } + else if (h < 120) { + r_ = x; g_ = c; b_ = 0; + } + else if (h < 180) { + r_ = 0; g_ = c; b_ = x; + } + else if (h < 240) { + r_ = 0; g_ = x; b_ = c; + } + else if (h < 300) { + r_ = x; g_ = 0; b_ = c; + } + else { + r_ = c; g_ = 0; b_ = x; } - size_t dataSize = rowStride * height; - std::vector imageData(dataSize, 0); + r = static_cast((r_ + m) * 255); + g = static_cast((g_ + m) * 255); + b = static_cast((b_ + m) * 255); +} - for (int y = 0; y < height; y++) - { - for (int x = 0; x < width; x++) - { - int pixelOffset = y * rowStride + x * 4; +std::vector generateSimpleTestImage(int width, int height, int cell_width) { + std::vector imageData(width * height * 4); - // 简单分成三个区域：红、绿、蓝 - if (x < width / 3) + int gridCols = (width + cell_width - 1) / cell_width; + int gridRows = (height + cell_width - 1) / cell_width; + + // 存储每个单元格的颜色 + std::vector>> cellColors( + gridRows, + std::vector>( + gridCols, + std::vector(4) + ) + ); + + // 为每个单元格生成不同的颜色 + for (int gridY = 0; gridY < gridRows; ++gridY) { + for (int gridX = 0; gridX < gridCols; ++gridX) { + // 使用网格坐标生成HSL颜色 + float hue = static_cast(gridX + gridY * gridCols) / (gridCols * gridRows) * 360.0f; + float saturation = 0.7f + 0.3f * static_cast(gridX % 2); // 交替饱和度 + float lightness = 0.5f + 0.2f * static_cast(gridY % 2); // 交替亮度 + + uint8_t r, g, b; + hslToRgb(hue, saturation, lightness, r, g, b); + + cellColors[gridY][gridX][0] = r; + cellColors[gridY][gridX][1] = g; + cellColors[gridY][gridX][2] = b; + cellColors[gridY][gridX][3] = 255; + if (gridY == 0 && gridX == 0) { - // 红色区域 - imageData[pixelOffset] = 2; // R - imageData[pixelOffset + 1] = 0; // G - imageData[pixelOffset + 2] = 0; // B - } - else if (x < 2 * width / 3) - { - // 绿色区域 - imageData[pixelOffset] = 0; // R - imageData[pixelOffset + 1] = 2; // G - imageData[pixelOffset + 2] = 0; // B - } - else - { - // 蓝色区域 - imageData[pixelOffset] = 0; // R - imageData[pixelOffset + 1] = 0; // G - imageData[pixelOffset + 2] = 2; // B + cellColors[gridY][gridX][0] = 0; + cellColors[gridY][gridX][1] = 0; + cellColors[gridY][gridX][2] = 0; + cellColors[gridY][gridX][3] = 255; } - imageData[pixelOffset + 3] = 255; // A (完全不透明) + if (gridY == 0 && gridX == gridCols-1) + { + cellColors[gridY][gridX][0] = 255; + cellColors[gridY][gridX][1] = 0; + cellColors[gridY][gridX][2] = 0; + cellColors[gridY][gridX][3] = 255; + } + + if (gridY == gridRows-1 && gridX == 0) + { + cellColors[gridY][gridX][0] = 0; + cellColors[gridY][gridX][1] = 0; + cellColors[gridY][gridX][2] = 255; + cellColors[gridY][gridX][3] = 255; + } + + if (gridY == gridRows - 1 && gridX == gridCols - 1) + { + cellColors[gridY][gridX][0] = 255; + cellColors[gridY][gridX][1] = 255; + cellColors[gridY][gridX][2] = 255; + cellColors[gridY][gridX][3] = 255; + } + } + } + + // 填充像素数据 + for (int y = 0; y < height; ++y) { + int gridY = y / cell_width; + + for (int x = 0; x < width; ++x) { + int gridX = x / cell_width; + + if (gridY < gridRows && gridX < gridCols) { + const uint8_t* color = cellColors[gridY][gridX].data(); + int index = (y * width + x) * 4; + + imageData[index] = color[0]; + imageData[index + 1] = color[1]; + imageData[index + 2] = color[2]; + imageData[index + 3] = color[3]; + } } } @@ -502,14 +572,14 @@ void TextureLoading::build_command_buffers() vkCmdBindPipeline(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.background); vkCmdDraw(draw_cmd_buffers[i], 6, 1, 0, 0); - vkCmdBindDescriptorSets(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layout, 0, 1, &descriptor_set, 0, NULL); - vkCmdBindPipeline(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.solid); + //vkCmdBindDescriptorSets(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layout, 0, 1, &descriptor_set, 0, NULL); + //vkCmdBindPipeline(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.solid); - VkDeviceSize offsets[1] = { 0 }; - vkCmdBindVertexBuffers(draw_cmd_buffers[i], 0, 1, vertex_buffer->get(), offsets); - vkCmdBindIndexBuffer(draw_cmd_buffers[i], index_buffer->get_handle(), 0, VK_INDEX_TYPE_UINT32); + //VkDeviceSize offsets[1] = { 0 }; + //vkCmdBindVertexBuffers(draw_cmd_buffers[i], 0, 1, vertex_buffer->get(), offsets); + //vkCmdBindIndexBuffer(draw_cmd_buffers[i], index_buffer->get_handle(), 0, VK_INDEX_TYPE_UINT32); - vkCmdDrawIndexed(draw_cmd_buffers[i], index_count, 1, 0, 0, 0); + //vkCmdDrawIndexed(draw_cmd_buffers[i], index_count, 1, 0, 0, 0); draw_point_cloud(draw_cmd_buffers[i]); @@ -926,8 +996,8 @@ bool TextureLoading::prepare(const vkb::ApplicationOptions& options) // --- 加载前景纹理 (示例) --- int width = 640; int height = 480; - int rowStride; - auto testImage = generateSimpleTestImage(width, height, &rowStride); + int rowStride = width*4; + auto testImage = generateSimpleTestImage(width, height, 80); size_t dataSize = testImage.size(); std::cout << "Generated test image: " << width << "x" << height << std::endl; std::cout << "Row stride: " << rowStride << std::endl;