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Docs, Backends: OpenGL3, Vulkan: added comments about custom sampler. (#9378)

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ocornut
2026-06-16 16:09:04 +02:00
parent b47a3898b4
commit 2064059a7f
4 changed files with 16 additions and 3 deletions
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13
backends/imgui_impl_vulkan.cpp
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@@ -537,8 +537,17 @@ static void ImGui_ImplVulkan_SetupRenderState(ImDrawData* draw_data, VkPipeline
// Draw callbacks
static void ImGui_ImplVulkan_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*) {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
static void ImGui_ImplVulkan_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*) { ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData(); vkCmdBindDescriptorSets(bd->RenderState->CommandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, bd->PipelineLayout, 1, 1, &bd->SamplerLinearDS, 0, nullptr); }
static void ImGui_ImplVulkan_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*) { ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData(); vkCmdBindDescriptorSets(bd->RenderState->CommandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, bd->PipelineLayout, 1, 1, &bd->SamplerNearestDS, 0, nullptr); }
static void ImGui_ImplVulkan_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*) { ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData(); vkCmdBindDescriptorSets(bd->RenderState->CommandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, bd->RenderState->PipelineLayout, 1, 1, &bd->SamplerLinearDS, 0, nullptr); }
static void ImGui_ImplVulkan_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*) { ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData(); vkCmdBindDescriptorSets(bd->RenderState->CommandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, bd->RenderState->PipelineLayout, 1, 1, &bd->SamplerNearestDS, 0, nullptr); }
// If you want to use your own sampler, you can create your own callback, access ImGui_ImplVulkan_RenderState for command-buffer and pipeline layout, e.g.
/*
void ImGui_ImplVulkan_DrawCallback_SetSamplerCustom(const ImDrawList*, const ImDrawCmd* cmd)
{
ImGui_ImplVulkan_RenderState* render_state = (ImGui_ImplVulkan_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState;
vkCmdBindDescriptorSets(render_state->CommandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, render_state->PipelineLayout, 1, 1, (VkDescriptorSet*)cmd->UserCallbackData, 0, nullptr);
}
*/
// Render function
void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer command_buffer, VkPipeline pipeline)