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Examples: Vulkan: Rewrote scissor processing to match other examples more closely. Removed extraneous +1 of scissor extent height.

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This commit is contained in:
omar 2019-02-16 12:33:38 +01:00
parent dd14adc731
commit d972533d09
1 changed files with 19 additions and 14 deletions
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33
examples/imgui_impl_vulkan.cpp
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@ -203,10 +203,13 @@ static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory
// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer command_buffer)
{
VkResult err;
if (draw_data->TotalVtxCount == 0)
// Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
if (fb_width <= 0 || fb_height <= 0 || draw_data->TotalVtxCount == 0)
return;
VkResult err;
FrameDataForRender* fd = &g_FramesDataBuffers[g_FrameIndex];
g_FrameIndex = (g_FrameIndex + 1) % IMGUI_VK_QUEUED_FRAMES;
@ -267,8 +270,8 @@ void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer comm
VkViewport viewport;
viewport.x = 0;
viewport.y = 0;
viewport.width = draw_data->DisplaySize.x * draw_data->FramebufferScale.x;
viewport.height = draw_data->DisplaySize.y * draw_data->FramebufferScale.y;
viewport.width = (float)fb_width;
viewport.height = (float)fb_height;
viewport.minDepth = 0.0f;
viewport.maxDepth = 1.0f;
vkCmdSetViewport(command_buffer, 0, 1, &viewport);
@ -313,17 +316,19 @@ void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer comm
clip_rect.z = (pcmd->ClipRect.z - clip_off.x) * clip_scale.x;
clip_rect.w = (pcmd->ClipRect.w - clip_off.y) * clip_scale.y;
// Apply scissor/clipping rectangle
// FIXME: We could clamp width/height based on clamped min/max values.
VkRect2D scissor;
scissor.offset.x = ((int32_t)clip_rect.x > 0) ? (int32_t)(clip_rect.x) : 0;
scissor.offset.y = ((int32_t)clip_rect.y > 0) ? (int32_t)(clip_rect.y) : 0;
scissor.extent.width = (uint32_t)(clip_rect.z - clip_rect.x);
scissor.extent.height = (uint32_t)(clip_rect.w - clip_rect.y + 1); // FIXME: Why +1 here?
vkCmdSetScissor(command_buffer, 0, 1, &scissor);
if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0f && clip_rect.w >= 0.0f)
{
// Apply scissor/clipping rectangle
VkRect2D scissor;
scissor.offset.x = (int32_t)(clip_rect.x);
scissor.offset.y = (int32_t)(clip_rect.y);
scissor.extent.width = (uint32_t)(clip_rect.z - clip_rect.x);
scissor.extent.height = (uint32_t)(clip_rect.w - clip_rect.y);
vkCmdSetScissor(command_buffer, 0, 1, &scissor);
// Draw
vkCmdDrawIndexed(command_buffer, pcmd->ElemCount, 1, idx_offset, vtx_offset, 0);
// Draw
vkCmdDrawIndexed(command_buffer, pcmd->ElemCount, 1, idx_offset, vtx_offset, 0);
}
}
idx_offset += pcmd->ElemCount;
}