NepuShiro/SDL3-TestingSuite
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NepuShiro
2026-05-20 04:23:47 -05:00
parent 96e90a09d9
commit 7d5f242a43
5 changed files with 502 additions and 454 deletions
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SDL3/ImGuiSDL3Renderer.cs
+20 -12
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@@ -10,6 +10,8 @@ public unsafe static class ImGuiSDL3Renderer
{
public class RendererData
{
public GL Gl = null!;
public uint GlVersion; // e.g. 320 for GL 3.2
public string GlslVersionString = ""; // e.g. "#version 330 core\n"
public bool GlProfileIsES2;
@@ -35,12 +37,10 @@ public unsafe static class ImGuiSDL3Renderer
public bool UseTexParameterToSetSampler;
public int NextSampler; // GL_LINEAR or GL_NEAREST
public GL Gl = null!;
}
public static RendererData? GetRendererData() => ImGui.GetCurrentContext().Handle != null ? ImGuiUserData<RendererData>.Get(ImGui.GetIO().BackendRendererUserData) : null;
public static bool Init(GL gl, string? glslVersion = null)
{
ImGuiIOPtr io = ImGui.GetIO();
@@ -143,7 +143,6 @@ public unsafe static class ImGuiSDL3Renderer
io.BackendRendererName = null;
io.BackendRendererUserData = null;
io.BackendFlags &= ~(ImGuiBackendFlags.RendererHasVtxOffset | ImGuiBackendFlags.RendererHasTextures | ImGuiBackendFlags.RendererHasViewports);
}
public static void NewFrame()
@@ -222,7 +221,6 @@ public unsafe static class ImGuiSDL3Renderer
int idxSize = drawList.IdxBuffer.Size * sizeof(ushort);
gl.BufferData(GLBufferTargetARB.ArrayBuffer, vtxSize, drawList.VtxBuffer.Data, GLBufferUsageARB.StreamDraw);
gl.BufferData(GLBufferTargetARB.ElementArrayBuffer, idxSize, drawList.IdxBuffer.Data, GLBufferUsageARB.StreamDraw);
for (int cmdIdx = 0; cmdIdx < drawList.CmdBuffer.Size; cmdIdx++)
@@ -234,11 +232,17 @@ public unsafe static class ImGuiSDL3Renderer
nint cbPtr = (nint)cmd.UserCallback;
if (cbPtr == (nint)DelegateStorage.DrawCallbackResetRenderStateDelegate.GetPtrForDelegate())
{
SetupRenderState(drawData, fbWidth, fbHeight, vao);
}
else if (cbPtr == (nint)DelegateStorage.DrawCallbackSetSamplerLinearDelegate.GetPtrForDelegate())
{
ApplySamplerLinear(bd);
}
else if (cbPtr == (nint)DelegateStorage.DrawCallbackSetSamplerNearestDelegate.GetPtrForDelegate())
{
ApplySamplerNearest(bd);
}
else
{
ImDrawCmdPtr cmdPtr = new ImDrawCmdPtr { Handle = &cmd };
@@ -352,7 +356,7 @@ public unsafe static class ImGuiSDL3Renderer
2.0f / (R - L), 0.0f, 0.0f, 0.0f,
0.0f, 2.0f / (T - B), 0.0f, 0.0f,
0.0f, 0.0f, -1.0f, 0.0f,
(R + L) / (L - R), (T + B) / (B - T), 0.0f, 1.0f,
(R + L) / (L - R), (T + B) / (B - T), 0.0f, 1.0f
};
gl.UseProgram(bd.ShaderHandle);
@@ -467,7 +471,7 @@ public unsafe static class ImGuiSDL3Renderer
< 130 => (vertSrc120, fragSrc120),
300 => (vertSrc300es, fragSrc300es),
>= 410 => (vertSrc410, fragSrc410),
_ => (vertSrc130, fragSrc130),
_ => (vertSrc130, fragSrc130)
};
string fullVert = bd.GlslVersionString + vertSrc;
@@ -577,7 +581,10 @@ public unsafe static class ImGuiSDL3Renderer
private static void ApplySamplerLinear(RendererData bd)
{
if (bd.HasBindSampler) bd.Gl.BindSampler(0, bd.TexSamplers[0]);
if (bd.HasBindSampler)
{
bd.Gl.BindSampler(0, bd.TexSamplers[0]);
}
else
{
bd.UseTexParameterToSetSampler = true;
@@ -587,7 +594,10 @@ public unsafe static class ImGuiSDL3Renderer
private static void ApplySamplerNearest(RendererData bd)
{
if (bd.HasBindSampler) bd.Gl.BindSampler(0, bd.TexSamplers[1]);
if (bd.HasBindSampler)
{
bd.Gl.BindSampler(0, bd.TexSamplers[1]);
}
else
{
bd.UseTexParameterToSetSampler = true;
@@ -630,8 +640,6 @@ public unsafe static class ImGuiSDL3Renderer
public static class DelegateStorage
{
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
internal delegate void DrawCallbackFn(ImDrawListPtr drawList, ImDrawCmdPtr cmd);