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dep/imgui: Support both GL and GLES without macro

This commit is contained in:
Connor McLaughlin 2019-11-06 01:32:30 +10:00
parent 15c42f032f
commit 1a6c51e74b
1 changed files with 32 additions and 6 deletions
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38
dep/imgui/src/imgui_impl_opengl3.cpp
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@ -135,6 +135,7 @@ static GLuint g_ShaderHandle = 0, g_VertHandle = 0, g_FragHandle = 0;
static int g_AttribLocationTex = 0, g_AttribLocationProjMtx = 0; // Uniforms location
static int g_AttribLocationVtxPos = 0, g_AttribLocationVtxUV = 0, g_AttribLocationVtxColor = 0; // Vertex attributes location
static unsigned int g_VboHandle = 0, g_ElementsHandle = 0;
static bool g_IsGLES = false;
// Forward Declarations
static void ImGui_ImplOpenGL3_InitPlatformInterface();
@ -155,13 +156,30 @@ bool ImGui_ImplOpenGL3_Init(const char* glsl_version)
#if defined(IMGUI_IMPL_OPENGL_ES2)
if (glsl_version == NULL)
glsl_version = "#version 100";
g_IsGLES = true;
#elif defined(IMGUI_IMPL_OPENGL_ES3)
if (glsl_version == NULL)
glsl_version = "#version 300 es";
g_IsGLES = true;
#else
if (glsl_version == NULL)
glsl_version = "#version 130";
g_IsGLES = false;
#endif
#if defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
if (GLAD_GL_ES_VERSION_2_0)
{
glsl_version = "#version 100";
g_IsGLES = true;
}
else if (GLAD_GL_ES_VERSION_3_0)
{
glsl_version = "#version 300 es";
g_IsGLES = true;
}
#endif
IM_ASSERT((int)strlen(glsl_version) + 2 < IM_ARRAYSIZE(g_GlslVersionString));
strcpy(g_GlslVersionString, glsl_version);
strcat(g_GlslVersionString, "\n");
@ -217,7 +235,8 @@ static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_wid
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
#ifdef GL_POLYGON_MODE
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
if (!g_IsGLES)
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
#endif
// Setup viewport, orthographic projection matrix
@ -281,7 +300,9 @@ void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
GLint last_vertex_array_object; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array_object);
#endif
#ifdef GL_POLYGON_MODE
GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
GLint last_polygon_mode[2];
if (!g_IsGLES)
glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
#endif
GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
@ -297,9 +318,13 @@ void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
bool clip_origin_lower_left = true;
#if defined(GL_CLIP_ORIGIN) && !defined(__APPLE__)
GLenum last_clip_origin = 0; glGetIntegerv(GL_CLIP_ORIGIN, (GLint*)&last_clip_origin); // Support for GL 4.5's glClipControl(GL_UPPER_LEFT)
if (last_clip_origin == GL_UPPER_LEFT)
clip_origin_lower_left = false;
GLenum last_clip_origin = 0;
if (!g_IsGLES)
{
glGetIntegerv(GL_CLIP_ORIGIN, (GLint*)&last_clip_origin); // Support for GL 4.5's glClipControl(GL_UPPER_LEFT)
if (last_clip_origin == GL_UPPER_LEFT)
clip_origin_lower_left = false;
}
#endif
// Setup desired GL state
@ -388,7 +413,8 @@ void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
#ifdef GL_POLYGON_MODE
glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
if (!g_IsGLES)
glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
#endif
glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);