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Misc: Correctness fixes for OpenGL

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GLES2 fallback should be functional again.
This commit is contained in:
Stenzek
2023-01-28 21:38:03 +10:00
parent a30bc94437
commit 14cf865905
18 changed files with 145 additions and 125 deletions
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29
src/frontend-common/imgui_impl_opengl3.cpp
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@ -159,9 +159,6 @@ bool ImGui_ImplOpenGL3_Init(const char* glsl_version)
}
bd->GlVersion = (GLuint)(major * 100 + minor * 10);
if (bd->GlVersion >= 320)
io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
// Store GLSL version string so we can refer to it later in case we recreate shaders.
// Note: GLSL version is NOT the same as GL version. Leave this to NULL if unsure.
if (glsl_version == NULL)
@ -171,11 +168,10 @@ bool ImGui_ImplOpenGL3_Init(const char* glsl_version)
strcpy(bd->GlslVersionString, glsl_version);
strcat(bd->GlslVersionString, "\n");
if (!glDrawElementsBaseVertex)
{
Log_ErrorPrintf("Missing glDrawElementsBaseVertex()");
return false;
}
if (glDrawElementsBaseVertex)
io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
else
Log_WarningPrintf("Missing glDrawElementsBaseVertex()");
return ImGui_ImplOpenGL3_CreateDeviceObjects();
}
@ -226,7 +222,9 @@ static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_wid
glUniformMatrix4fv(bd->AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
// Bind vertex/index buffers and setup attributes for ImDrawVert
glBindVertexArray(bd->VaoHandle);
if (bd->VaoHandle)
glBindVertexArray(bd->VaoHandle);
glBindBuffer(GL_ARRAY_BUFFER, bd->VboHandle);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bd->ElementsHandle);
glEnableVertexAttribArray(bd->AttribLocationVtxPos);
@ -305,12 +303,17 @@ void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
const GL::Texture* tex = static_cast<const GL::Texture*>(pcmd->GetTexID());
if (tex)
tex->Bind();
glDrawElementsBaseVertex(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)), (GLint)pcmd->VtxOffset);
if (glDrawElementsBaseVertex)
glDrawElementsBaseVertex(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)), (GLint)pcmd->VtxOffset);
else
glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)));
}
}
}
glBindVertexArray(0);
if (bd->VaoHandle)
glBindVertexArray(0);
}
bool ImGui_ImplOpenGL3_CreateFontsTexture()
@ -544,7 +547,9 @@ bool ImGui_ImplOpenGL3_CreateDeviceObjects()
// Create buffers
glGenBuffers(1, &bd->VboHandle);
glGenBuffers(1, &bd->ElementsHandle);
glGenVertexArrays(1, &bd->VaoHandle);
if (glGenVertexArrays)
glGenVertexArrays(1, &bd->VaoHandle);
return true;
}