Discard render target contents only if the entire mip level is used

[libs/gl.git] / source / backends / vulkan / commands_backend.cpp

diff --git a/source/backends/vulkan/commands_backend.cpp b/source/backends/vulkan/commands_backend.cpp
index d55a4dfdbad3095bc253f57820f9bfa37a10c775..8243b58fe1ba66849b10a2cf2d94538f5d4450a8 100644 (file)
--- a/source/backends/vulkan/commands_backend.cpp
+++ b/source/backends/vulkan/commands_backend.cpp
@@ -69,6 +69,8 @@ void VulkanCommands::begin_render_pass(bool clear, const ClearValue *clear_value
        if(!framebuffer)
                throw invalid_operation("VulkanCommands::begin_render_pass");
 
+       viewport = pipeline_state->get_viewport();
+
        const VulkanFunctions &vk = device.get_functions();
 
        if(!current_buffer)
@@ -85,8 +87,8 @@ void VulkanCommands::begin_render_pass(bool clear, const ClearValue *clear_value
                if(dynamic_cast<const SwapChainTexture *>(framebuffer->get_attachment(i)))
                        to_present = true;
        if(!to_present)
-               framebuffer->prepare_image_layouts(clear);
-       VkRenderPass render_pass = device.get_pipeline_cache().get_render_pass(framebuffer->get_format(), clear, !clear_values, to_present);
+               framebuffer->prepare_image_layouts(clear && !viewport);
+       VkRenderPass render_pass = device.get_pipeline_cache().get_render_pass(framebuffer->get_format(), clear, (!clear_values && !viewport), to_present);
 
        framebuffer->refresh();
 
@@ -97,7 +99,6 @@ void VulkanCommands::begin_render_pass(bool clear, const ClearValue *clear_value
        begin_info.renderPass = handle_cast<::VkRenderPass>(render_pass);
        begin_info.framebuffer = handle_cast<::VkFramebuffer>(framebuffer->handle);
 
-       viewport = pipeline_state->get_viewport();
        if(viewport)
        {
                begin_info.renderArea.offset.x = viewport->left;